20 february 2025

A night out with my 6-inch, after a month of cloudy weather.  I had some difficulty getting the setting circles to align, and conditions were not very good -- poor transparency and average seeing, even with the small aperture -- and I had a late start as it was.  Good to be out all the same.

A  2142 AB: 152; 250x: Faint unequal pair, hairline split.  -14% PRO, and a poor PMV, it is not binary.

10h 05m 43.55s +41° 02' 42.7" P.A. 293.00 sep 1.0 mag 7.97,8.83 Sp F0 dist. 137.55 pc (448.69 l.y.)

BU  219 AB: 152; 250x: Excellent close pair, 2 Dm, nicely split, best seen with high power.  -23% PRO and a poor PMV, it is not binary.

10h 21m 35.86s -22° 31' 42.7" P.A. 186.00 sep 1.8 mag 6.70,8.52 Sp A1V dist. 165.29 pc (539.18 l.y.)

BU  411 AB: 152; 200x: Faint, very close split.  15% PRO, a poor PMV, only 59 AU WS, 1.4+1.1 Msol, it is probably binary.  SOC grade 2 orbit, 159.3-year period, it is at apastron and won't have much change the next coupld of decades. 

10h 36m 04.49s -26° 40' 31.6" P.A. 303.00 sep 1.3 mag 6.68,7.77 Sp F6V dist. 41.25 pc (134.56 l.y.)

HJ 4311 AB: 152; 125x: Very bright primary and well split faint secondary, looks like a star with a planet.  36% PRO, 249 AU WS, poor PMV, 1.6+0.7 Msol, it is possibly binary and needs an orbit

10h 23m 17.55s -13° 22' 37.7" P.A. 119.00 sep 4.7 mag 6.70,10.26 Sp F5V dist. 53.45 pc (174.35 l.y.)

HU 1128 AB: 152; 125x: Wide B noticed with averted vision then can hold.  75% PRO, 68 AU WS, negative PMV, and RVD 4.8 < EV 5.6.  SOC grade 5 orbit 241-year period. 

09h 35m 39.50s +35° 48' 36.4" P.A. 58.00 sep 7.3 mag 4.80,12.50 Sp G8V dist. 11.37 pc (37.09 l.y.)

LDS2863 AB: 152; 125x: 4 Dm, super wide, white A, light orange B.  These appear to share a similar proper motion, but there is only 1% PRO, 1,588 AU WS, 1.2+0.5 Msol, but RVD 2.8 > EV 1.4, it is not binary.

10h 30m 37.58s +55° 58' 49.9" P.A. 303.00 sep 122.8 mag 4.88,8.86 Sp F8V+K7V dist. 12.78 pc (41.69 l.y.)

STF1405 AB: 152; 125x: White stars, well separated, B detected with averted vision then can hold.  18% PRO, 2,800 AU WS, 2.0+0.8 Msol, but RVD 3.6 > EV 1.3, it is not binary.

10h 05m 55.92s +39° 34' 55.7" P.A. 252.00 sep 22.2 mag 7.30,11.76 Sp A9V dist. 105.82 pc (345.18 l.y.)

STF1424 AB: 152; 125x: Algieba.  Lovely same color light-yellow stars, 3 Dm, well split.  Seen with the 60mm too, with 40x and best at 90x, with nice diffraction rings.  No Gaia data.  SOC grade 4 orbit, 554-year period. 

10h 19m 58.35s +19° 50' 29.4" P.A. 127.00 sep 4.7 mag 2.37,3.64 Sp K1III+gG7 dist. 39.89 pc (130.12 l.y.)

STF1426 AB: 152; 250x: Unequal hairline with seeing only. No Gaia data for A.  SOC grade 4 orbit, 774-year period.

10h 20m 32.32s +06° 25' 47.6" P.A. 315.00 sep 0.9 mag 7.99,8.30 Sp F5 dist. 149.7 pc (488.32 l.y.)

STF1431 AB: 152; 125x: 2 Dm, nicely split.  -1% PRO, poor PMV, it is not likely binary.

10h 25m 35.12s +08° 46' 35.4" P.A. 76.00 sep 3.6 mag 7.76,9.07 Sp A8III dist. 151.98 pc (495.76 l.y.)

STF1432 AB: 152; 125x: Super wide, 2 Dm.  -93% PRO, it is not binary.

10h 26m 59.53s +29° 40' 31.0" P.A. 121.00 sep 28.6 mag 7.84,10.28 Sp F2 dist. 100.3 pc (327.18 l.y.)

STF1440 AB: 152; 125x: 1 Dm, wide.  Only 6% PRO, a poor PMV, it is not likely binary. 

10h 29m 49.23s -03° 54' 55.2" P.A. 345.00 sep 14.8 mag 7.81,9.17 Sp G0 dist. 145.35 pc (474.13 l.y.)

STF1441 AB: 152; 200x: Excellent pair, light orange stars with a closely split 2 Dm B.  No Gaia data for B.  Low chance of it being binary, given the distance from us and the relatively wide split.  An orbit can be tried all the same.

10h 30m 58.78s -07° 38' 15.2" P.A. 167.00 sep 2.8 mag 6.51,8.81 Sp K5III+F6V dist. 348.43 pc (1136.58 l.y.)

STF1450 AB: 152; 200x: Very fine close split, dull white stars, 2 Dm.  No Gaia data for B.  Given the distance from us, I don't think chances are good for it to be binary.

10h 35m 02.16s +08° 39' 01.6" P.A. 157.00 sep 2.0 mag 5.80,7.90 Sp A2V dist. 131.41 pc (428.66 l.y.)

STF1457 AB: 152; 200x: Very closely split unequal pair.  -62% PRO, it is not binary.

10h 38m 43.14s +05° 44' 02.9" P.A. 334.00 sep 1.9 mag 7.69,8.16 Sp F5V dist. 65.4 pc (213.33 l.y.)

STFB  6 AB: 60; 40x: Unequal super wide.  No Gaia data. 

10h 08m 22.31s +11° 58' 01.9" P.A. 304.00 sep 179.2 mag 1.40,8.24 Sp B7V dist. 24.31 pc (79.3 l.y.)

STT 215 AB: 152; 250x: Very fine white unequal pair, close clean split with high power, suspected lower powers. 31% PRO, 152 AU WS, 1.9+1.8, it is probably binary.  SOC grade 4 orbit, 468-year period.

10h 16m 16.05s +17° 44' 24.6" P.A. 176.00 sep 1.5 mag 7.25,7.46 Sp A9IV dist. 114.55 pc (373.66 l.y.)

STT 216 AB: 152; 250x: Difficult, with seeing, two hazy hairline split stars.  Elongates with averted vision.  -32% PRO, 1.0+0.6 Msol, RVD 2.0 < EV 6.8.  There is a SOC grade 3 orbit, 315-year period, it may well be binary in spite of the parallax discrepancy.

10h 22m 43.81s +15° 20' 39.7" P.A. 228.00 sep 2.5 mag 7.38,10.28 Sp G5 dist. 28.77 pc (93.85 l.y.)

STT 219 AB: 152; 125x: B seen with averted vision only.  -73% PRO, it is not binary.

10h 30m 11.49s +50° 59' 36.2" P.A. 297.00 sep 13.2 mag 7.60,11.70 Sp A7IV dist. 158.48 pc (516.96 l.y.)

STT 523 AB: 152; 200x: Very faint B seen with averted vision only, well split. 71% PRO, 173 AU WS, 1.2+0.4 Msol, RVD 4.2 > EV 4.0, but not by much.  It is possibly binary and an orbit is needed.

10h 17m 14.53s +23° 06' 22.3" P.A. 300.00 sep 7.9 mag 5.80,11.30 Sp F6V+M1.5 dist. 22.81 pc (74.41 l.y.) 

16 january 2025

A very productive night with the 6-inch.  Seeing was quite good, nearly perfect at higher elevations.  A bit of typical marine haze.  Cold, in the upper 30s, and light dew.  I observed from around 7:00 and caught the beginnings of an Io shadow transit on Jupiter, and Venus and Saturn close to each other (through branches of a neighbor's tree), and Mars, with a polar ice cap and dark features visible.  I ended the night around 11pm with a bino-viewed look at the moon.  All around a great night.

BGH  21 AB: 60; 40x: 2 Dm, superwide.  This pair have a very similar proper motion in speed and direction, but with -92% PRO, it is not binary.

05h 10m 03.87s +27° 33' 23.4" P.A. 353.00 sep 314.6 mag 7.02,9.27 Sp F5+G5 dist. 39.67 pc (129.4 l.y.)

BU  189 AB: 152; 125x: 3 Dm, well separated B with averted vision only.  26% PRO, 1,407 AU WS, 3.8+1.6 Msol, but RVD 3.3 > EV 2.6, it is not binary.

05h 20m 26.41s -05° 22' 03.1" P.A. 285.00 sep 4.6 mag 6.41,9.80 Sp B8III dist. 281.69 pc (918.87 l.y.)

BU  317 AB: 152; 200x: Reddish A, wide B with averted vision only.  25% PRO, 2,044 AU WS, 2.9+1.4 Msol, but RVD 3.5 > EV 1.9, it is not binary.

05h 13m 55.82s -22° 59' 18.6" P.A. 13.00 sep 8.7 mag 7.54,10.27 Sp K0III dist. 243.9 pc (795.6 l.y.)

BU  327 AB: 152; 250x: Unequal hairline split, with seeing and high power only.  No Gaia data for the companion.  Given how close it is, an orbit should be tried.

06h 58m 28.16s -03° 01' 25.4" P.A. 107.00 sep 0.6 mag 7.80,8.15 Sp B0.5IV dist. 515.46 pc (1681.43 l.y.)

BU  560 AB: 152; 200x: Beautiful close unequal pair.  -7% PRO, it is not likely binary.

05h 47m 24.87s +29° 39' 26.9" P.A. 124.00 sep 1.7 mag 7.77,8.24 Sp F8 dist. 79.55 pc (259.49 l.y.)

BU  573 AB: 152; 250x: Hairline split with seeing, near equal, white.  No Gaia data for the companion.  SOC grade 4 orbit, 855-year period, if correct it will drastically tighten over the next 20 years.

07h 01m 49.89s -10° 52' 56.3" P.A. 311.00 sep 0.8 mag 7.16,7.83 Sp F8 dist. 118.34 pc (386.03 l.y.)

BUP  79 AC: 152; 125x: 5 Dm superwide, C on edge of direct vision.  -80% PRO, it is not binary.  Nor is AB, -73% PRO.

05h 27m 38.89s +34° 28' 33.6" P.A. 72.00 sep 61.8 mag 5.22,10.87 Sp K3IIICN+2 dist. 138.89 pc (453.06 l.y.)

COO  31 AB: 152; 125x: 2 Dm, B just seen direct vision, very wide.  19% PRO, 2,419 AU WS, 2.1+1.1 Msol, but the RVD 2.3 > EV 1.5, it is not binary.

05h 23m 38.15s -22° 18' 29.2" P.A. 284.00 sep 17.4 mag 7.45,10.22 Sp A7V dist. 684.93 pc (2234.24 l.y.)

CPO 7 AB: 152; 250x: Adhara. As challenging as nearby Sirus B.  B is faint but well separated from A's dancing diffraction. No Gaia data.

06h 58m 37.55s -28° 58' 19.5" P.A. 162.00 sep 7.9 mag 1.50,7.50 Sp B2II dist. 124.22 pc (405.21 l.y.)

DA  3 AB: 152; 250x: Exquisitely close hairline split, 1 Dm.  1% PRO 2.5% error, 337 AU WS, 3.4+2.7 Msol, it probably is not binary.

05h 35m 54.08s -05° 37' 42.4" P.A. 173.00 sep 0.9 mag 7.33,8.54 Sp B6Ve

DA  4 AB: 152; 250x: Very challenging, close separation, B appears as a steady brightening in A's diffraction.  No Gaia parallax data for B.  It might be too far to be binary, but an orbit could be tried.

05h 35m 23.16s -04° 50' 18.1" P.A. 202.00 sep 1.2 mag 4.61,7.50 Sp B1V dist. 271 pc (884 l.y.)

ENG  22 AS: 152; 125x: Superwide 3 Dm.  Part of BUP 82.  19% PRO, 1,203 AU WS, 0.8+0.4 Msol, but RVD 2.3 > EV 1.4, it is not binary.

05h 41m 20.33s +53° 28' 51.7" P.A. 72.00 sep 97.9 mag 6.29,9.84 Sp K1V+M0.5V dist. 12.28 pc (40.06 l.y.)

H 6 40 AB: 152; 125x: Superwide, 3 Dm.  26% PRO, 864 AU WS, 1.3+0.7 Msol, and the RVD 2.1 is =/> EV 2.0.  There is a chance it's binary, an orbit should be tried.

05h 44m 27.79s -22° 26' 54.2" P.A. 349.00 sep 95.5 mag 3.64,6.28 Sp F6V+K2V dist. 8.93 pc (29.13 l.y.)

HDS 713 AB: 152; 200x: Faint unequal, very wide.  46% PRO, 4,411 AU WS, 1.3+1.3 Msol, and RVD 0.1 < EV 1.0, it is likely binary and needs an orbit.

05h 26m 05.38s +22° 49' 33.6" P.A. 129.00 sep 24.0 mag 10.00,10.19 Sp G0 dist. 362.32 pc (1181.89 l.y.)

HJ 3750 AB: 152; 200x: Pretty, bright, cream-colored A, light orange B, close but good separation, 4 Dm. 86% PRO, 513 AU WS, 3.7+1.6 Msol, it is probably binary and needs an orbit tried.

05h 20m 26.91s -21° 14' 23.1" P.A. 279.00 sep 4.0 mag 4.72,8.45 Sp A0Vv dist. 127.55 pc (416.07 l.y.)

HJ 3752 AB: 152; 200x: Lovely 3 Dm, good separation.  -15% PRO, it is not likely binary.

05h 21m 46.27s -24° 46' 22.6" P.A. 91.00 sep 3.5 mag 5.44,6.58 Sp G0 dist. 107.87 pc (351.87 l.y.)

HJ 3770 AB: 152; 125x: Well separated B barely seen with averted vision.  57% PRO, 218 AU WS, 1.2+0.6 Msol, and RVD 2.6 < EV 3.8, it is likely binary and needs an orbit.

05h 33m 30.36s -24° 20' 16.6" P.A. 24.00 sep 4.2 mag 7.79,11.35 Sp F7V dist. 50.58 pc (164.99 l.y.)

HJ 3788 AB: 152; 125x: 2 Dm, superwide.  -33% PRO, and RVD 1.7 > EV 1.5, it is not binary.

05h 41m 16.85s -26° 20' 48.0" P.A. 155.00 sep 25.7 mag 7.60,9.20 Sp F3/5V dist. 68.26 pc (222.66 l.y.)

HJ 3798 AB: 152; 125x: Unequal very wide.  -77% PRO, they are not binary.

05h 47m 12.85s -24° 29' 44.1" P.A. 70.00 sep 15.3 mag 8.19,8.76 Sp F2V+F5IV

HJ 3914 AB: 152; 125x: Wide, 3 Dm B with averted vision only.  5% PRO, 2,562 AU WS, 2.8+1.0 Msol, there is a small possibility it's binary and an orbit can be tried.

07h 02m 08.61s -23° 29' 49.3" P.A. 314.00 sep 11.0 mag 7.52,11.00 Sp G8III/IV

HO  342 AB: 152; 250x: Unequal 1 Dm, close separation.  -11% PRO, it is not likely binary.

07h 02m 50.54s +13° 05' 21.7" P.A. 89.00 sep 1.2 mag 7.99,8.71 Sp F5 dist. 212.31 pc (692.56 l.y.)

HU  112 AB: 152; 250x: Subtlety notched elongation, unequal.  Needs more aperture to resolve.  No Gaia data.  This is an insanely tight, sub-arcsecond triple!  Or, quadruple, as there is a spectroscopic Ba,Bb pair.  The B and C pairs have nearly identical position angles and separations, so likely appear overlapped.  I need to observe this with the 20-inch.   

HU 112 AB: 07h 01m 49.51s -11° 18' 03.3" P.A. 196.00 sep 0.6 mag 7.03,7.70 Sp B2V+B9V dist. 444.44 pc (1449.76 l.y.)

SAO 3 AC: 07h 01m 49.51s -11° 18' 03.3" P.A. 198.00 sep 0.7 mag 7.03,7.80 Sp B2V+B9V dist. 444.44 pc (1449.76 l.y.)

HU 1107 AB: 152; 250x: Difficult, B is very much fainter, but steady on white A's diffraction ring. -32% PRO, it is not binary.

05h 37m 15.06s +64° 09' 16.9" P.A. 57.00 sep 1.5 mag 6.18,9.81 Sp A0V dist. 111.23 pc (362.83 l.y.)

I   183 AB: 152; 200x: Not very difficult, 4 Dm, well separated, seen at 125x, better view with 200x.  -81% PRO, it is not binary.

07h 00m 47.55s -25° 38' 37.6" P.A. 139.00 sep 3.9 mag 7.41,9.93 Sp B2IV dist. 515.46 pc (1681.43 l.y.)

J 36 AB: 152; 250x: Beautiful, faint B close split.  -3% PRO, only 131 AU WS, 1.5+1.0 Msol -- it is probably not binary, but an orbit could be tried.

05h 48m 15.09s +03° 53' 56.2" P.A. 95.00 sep 1.4 mag 7.83,9.56 Sp F8

S   476 AB: 152; 125x: Wide, slightly unequal.  -13% PRO, it is not binary.

05h 19m 17.44s -18° 31' 11.8" P.A. 18.00 sep 39.3 mag 6.31,6.48 Sp B3V+Ap dist. 263.16 pc (858.43 l.y.)

S   541 AB: 152; 125x: 1 Dm, super wide.  6% PRO, 5,983 AU WS, 3.1+2.3 Msol, RVD 1.4 => EV 1.3.  The numbers are marginal, but there is some chance it is binary, an orbit can be tried.

06h 56m 34.17s -22° 38' 41.5" P.A. 44.00 sep 23.3 mag 7.48,8.53 Sp K0III+F dist. 290.7 pc (948.26 l.y.)

STF 645 A-BC: 152; 125x: White and well separated 2 Dm B.  No Gaia data for B, but it's BC that's the prize, BU 1047 SOC grade 3 orbit.

05h 09m 45.06s +28° 01' 50.2" P.A. 29.00 sep 11.3 mag 6.04,9.11 Sp A5m dist. 52.6 pc (171.58 l.y.)

STF 648: AB: 152; 125x: Unequal, well separated, light orange.  14% PRO, 211 AU WS, 1.1+0.9 Msol, and RVD 0.7 < EV 4.0, it is likely binary and needs an orbit.

STF 676 AB: 152; 125x: Close split, 1 Dm.  -30% PRO, it is not binary.

05h 24m 47.16s +64° 43' 52.7" P.A. 268.00 sep 1.4 mag 8.13,8.92 Sp F8 dist. 204.08 pc (665.71 l.y.)

STF 677 AB: 152; 250x: Very closely split, 1 Dm, nice pair.  -9% PRO, it is not likely binary, in spite of the SOC grade 4 orbit 430-year period.

05h 24m 44.29s +63° 23' 11.1" P.A. 108.00 sep 1.2 mag 7.86,8.50 Sp G0 dist. 47.15 pc (153.8 l.y.)

STF 684 AB: 152; 250x: Very close separation, 2 Dm.  -11% PRO, it is not likely binary.

05h 22m 11.04s +45° 04' 53.9" P.A. 141.00 sep 1.5 mag 7.72,9.34 Sp B8III dist. 5882.35 pc (19188.23 l.y.)

STF 698 AB: 152; 125x: 1 Dm, superwide.  -92% PRO, it is not binary.

05h 25m 12.94s +34° 51' 18.6" P.A. 348.00 sep 31.4 mag 6.65,8.33 Sp K2III dist. 5263.16 pc (17168.43 l.y.)

STF 699 AB: 152; 125x: White, 1 Dm, wide, in a rich field.  -4% PRO with 4% error, 1,804 AU WS, 2.2+1.9 Msol, and a 0.09 PMV.  It's possible to be binary, an orbit could be tried.

05h 25m 38.50s +38° 02' 41.1" P.A. 345.00 sep 8.9 mag 7.90,8.61 Sp A1V dist. 308.64 pc (1006.78 l.y.)

STF 711 AB: 152; 125x: 2 Dm, wide.  -44% PRO, it is not binary (in spite of SOC grade 5 orbit).

05h 31m 28.89s +54° 39' 15.8" P.A. 226.00 sep 7.3 mag 7.78,9.67 Sp G1+K2 dist. 39.31 pc (128.23 l.y.)

STF 718 AB: 152; 125x: Near equal white stars, well separated, in a rich field.  17% PRO, 847 AU WS, 1.8+1.8 Msol, and RVD 0.1 < EV 2.8, it is likely binary and needs an orbit.  It is very close to us, so the separation is apparently wide for us to see easily.

05h 32m 20.59s +49° 23' 36.5" P.A. 72.00 sep 7.8 mag 7.47,7.54 Sp F5 dist. 82.58 pc (269.38 l.y.)

STF 719 AB: 152; 250x: Lovely closely split 2 Dm pair, with a similar magnitude C further out with similar position angle.  -29% it is not binary (nor is the C pair).

05h 30m 06.14s +29° 32' 55.3" P.A. 336.00 sep 1.4 mag 7.50,8.76 Sp G5 dist. 169.78 pc (553.82 l.y.)

STF 734 AB: 152; 250x: Excellent close split, >1 Dm.  -28% PRO, it is not binary.

05h 33m 07.35s -01° 43' 02.5" P.A. 355.00 sep 1.6 mag 6.67,8.22 Sp B4Vn dist. 315.46 pc (1029.03 l.y.)

STF 736 AB: 152; 250x: Lovely close pair, 1 Dm.  47% PRO, 112 AU WS, 1.2+0.9 Msol, it is likely binary and needs an orbit.

05h 37m 07.20s +41° 49' 41.7" sep 2.7 mag 7.45,8.57 Sp F8 dist. 44.19 pc (144.15 l.y.)

STF 768 AB: 152; 125x: 3 Dm wide pair.  12% PRO, 9,636 AU WS, 3.9+2.0, there is some chance it is binary, and orbit can be tried.

05h 43m 17.17s +41° 07' 22.4" P.A. 221.00 sep 18.8 mag 7.45,10.32 Sp B8 dist. 82.37 pc (268.69 l.y.)

STF 973 AB: 152; 125x: Slightly unequal, wide.  -23% PRO, it is not binary.

07h 04m 03.92s +75° 13' 39.1" P.A. 32.00 sep 12.8 mag 7.22,8.19 Sp G0 dist. 35.71 pc (116.49 l.y.)

STF 997 AB: 152; 200x: Light orange A and blue B, well separated.  86% PRO, 832 AU WS, 5.7+3.0 Msol, it is likely binary and an orbit is needed.

06h 56m 06.59s -14° 02' 33.6" P.A. 343.00 sep 2.9 mag 5.27,7.14 Sp G5III+A2 dist. 381.68 pc (1245.04 l.y.)

STT 106 AB: 152; 125x: White, 2 Dm wide pair.  7% PRO, 581 AU WS, 1.5+0.7 Msol, but RVD 3.0 > EV 2.6, it is not binary.

05h 22m 11.20s +05° 23' 43.1" P.A. 40.00 sep 9.5 mag 7.06,10.06 Sp F6V dist. 56.66 pc (184.82 l.y.)

STT 108 AB: 152; 200x: Very much fainter B nicely split from white A.  -7% PRO, it is not binary.

05h 29m 19.14s +18° 21' 56.5" P.A. 131.00 sep 3.2 mag 6.77,10.42 Sp A2 dist. 186.92 pc (609.73 l.y.)

STT 112 AB: 152; 250x: ! Unequal hairline split, great pair.  -41% PRO, it is not binary.

05h 39m 54.31s +37° 57' 28.8" P.A. 46.00 sep 0.9 mag 7.92,8.21 Sp B9

STT 117 AB: 152; 125x: Light yellow-orange A, wide and very faint B plainly seen.  47% PRO, 3,691 AU WS, 3.9+1.7 Msol, but RVD 4.3 > EV 1.6, it is not binary.

05h 48m 11.46s +30° 32' 06.7" P.A. 31.00 sep 11.7 mag 7.11,10.01 Sp K5 dist. 284.09 pc (926.7 l.y.)

STT 159 AB: 152; 250x: Light yellow, notched snowman with a small head.  No Gaia data for B.  SOC grade 3 orbit, 262-year period, 

06h 57m 16.60s +58° 25' 23.0" P.A. 237.00 sep 0.7 mag 4.45,5.50 Sp G8III+F8V dist. 54.67 pc (178.33 l.y.)

STTA 61 AB: 152; 125x: 2 Dm, supewrwide.  66% PRO, 3,628 AU WS, 1.5+1.0, but RVD 1.7 > EV 1.1, it is not binary.

05h 09m 43.70s +29° 47' 55.1" P.A. 245.00 sep 68.4 mag 6.72,8.49 Sp F8V dist. 52.97 pc (172.79 l.y.)

STTA 63 AB: 152; 125x: More than 1 Dm, superwide.  -95% PRO, it is not binary.

05h 30m 45.08s +39° 49' 33.3" P.A. 277.00 sep 75.2 mag 6.49,7.69 Sp G9III dist. 217.86 pc (710.66 l.y.)

WNC 2 A-BC: White, near equal, well separated. No Gaia parallax data for the secondary.  SOC Grade 5 orbit 923 year period.  BC is A 847, 7.6/7.8 0.2" 47-year period SOC grade 2.

05h 23m 51.32s -00° 51' 59.8" P.A. 159.00 sep 3.1 mag 6.87,6.96 Sp F6V+F5V dist. 55.71 pc (181.73 l.y.)

lake sonoma 20 january 2025

A nice observing window opened up last Monday night.  Clear conditions with good seeing, low possibility of dew, and a 3rd quarter moon.  I drove up to Lake Sonoma where a sizable group, for a work night, gathered, including Bob, Dan, and Steve.  The transparency was not quite perfect, as we noticed a long and persistent contrail to the west during dusk.  But Steve recorded 21.3+ on his SQM, so it was pretty good.  The drive up was 2 hours non-stop, with the usual slowdowns on 880 -- I even used the express lane all the way up 880, and it was still slow.  So much for "holiday light."

Because I planned to drive home at midnight, I kept my set-up simple, with night vision on a NP101 and 60mm ED dual mounted on a Twighlight  II, with Nexus DSC.  I also brought my monopod for 1x and 3x viewing -- though I wish I brought my mirror mount, as my primary goal for the night was at zenith...  I revisited many observations I made previously.  

My main goal was a sweep of very faint nebulosity which comes off of the California nebula NGC 1499 to the south to Sivan 4, then tuns west past Barnard 3 and north in long filamentary streams.  The stringy nebula stream stretches a whopping 20 degrees.  I've wanted to observe this for the 2 years since I first noticed it on Aladin.   I found the existence of this nebula by bringing up the Finkbeiner Ha gas line on Aladin, then using the Pixel Mapping slider to the left, which greatly enhances the view of faint extended nebula.  

Near the center of the Aladin screen shot is a comparatively brighter "H" shape, centered at roughly 03:00h RA, +37:00 Dec.  Using my 60mm refractor which has 5x and a 9-degree field of view, I pushed my scope to the position.  Starting out with a 685 longpass filter, I saw a nice field of stars, and while looking through the eyepiece flipped to a 3nm Ha, and instantly saw a broad, subtly mottled very faint nebula, as thick as half the field but steaming through all of it, orientated N-S.  It was very faint, but not difficult, and looked like a broken up, lingering contrail.  The nebula also showed fairly well with a Ha+OIII dual band, but perhaps because I knew what to look for.  I did not clearly distinguish a "H" shape, but there were some subtly brighter sections in the stream.

I proceeded to pan the telescope to follow the stream, first south-eastward.  The nebula quickly faded and became very difficult to follow until I came to the region near Barnard 3 (aka the "Wreath Nebula"), a large, round dusty cloud about 1.5x2.0 degrees, very faint and turbulent, with a brighter irregular knot in the middle, and three turbulent clouds on the east, south, and southwest periphery of the nebulous circle.  Further northeast is Sivan 4, a broad featureless glow, then NGC 1499, which was very bright and layered with filamentary streaks, especially on its long flanks.  Since NGC 1499 "points" westward toward the "H" shaped nebula, I panned in that direction, losing sight of all nebulae briefly until the filamentary trunk reappeared.  I then panned northward, and the trunk very quickly dissipated.  The nebula became very broken up and intermingled with the sky background, and I lost the trail of it the further north I panned.

I plan to re-observe this steam the next chance I get, probably with my mirror mount at 3x, to make the viewing easier on my neck.

Another highlight was IRAS 22298+6505, which the WISE website describes as a "a hidden star-forming cloud complex of dust and gas located in the constellation of Cepheus."  Observed with the 4-inch with 3nm Ha, I saw a large arc of very faint nebula which took half the field.  The inside arc was deeply crenellated with dark lanes, leaving the clear impression of dust and gas being blown out by stellar winds.  The outside arc was a sheet of mottled nebula which dissipated slowly.  I also noticed a tight round knot of brighter nebula around a star, which can be seen on the WISE image below.  As their website explains, this is the "bright blue giant star, 26 Cephei...[it] is surrounded by a bubble of cool, red dust and dust-enshrouded younger stars that may owe their existence to their older sibling."  

NGC 7380, aka the "Wizard Nebula": With the 4-inch, it appeared as a very faint crinkly arc with the Tr-band, but was transformed when flipping to the 3nm Ha.  The inside arc became very bright and the dark nebula columns were prominent.  The back end of the arc cut-off rather quickly but irregularly.  I had the sense the whole area was a dark, turbulent cloud of smoke, with only a small part of it illuminated by a candle.

Sivan 3: My prior observations were slightly tentative, only picking out a very weak nebula.  This time, with the 60mm, I had a "no doubt about it" experience.  It was still very weak, but it was immediately detected when flipping from the Tri-band (in which I didn't see anything but stars) to the 3nm Ha: a very large, curved mottled cloud, with Alpha Camelopardalis lying inside the arc.  The nebula was 3-degrees in width, which took up half the field of view, and extended a little beyond the field on either side.  I believe I did see the bow shock feature, which is the arc of brighter nebulosity near Alpha (above it, in this image, with Sivan 3 in the background) -- but I really didn't make a careful enough sketch.  I must try better next time!

15 january 2025

Rather a Jeckel and Hyde night.  After evening chores, I went out to use the Zerochromat, which I had recollimated that afternoon.  I bought a new laser collimator with a narrow beam just for the purpose.  But the views in the evening were not good at all.  Still showing coma.  The star test showed the one section of concentric, even rings as one would hope, but only around one rim.  The rest of the star test image was smeared and blurred.  I tried collimating off the star test, but it only made things worse.  I gave up for the night.  I'm fairly close to giving up altogether.  I fear I need to make alignments inside the tube, which will be difficult and iterative, since there are no means to adjust the second mirror and objective from the outside.  

After 9pm I switched to my trusty 6-inch f/15 refractor, and it performed wonderfully.  I observed for two hours and made over forty observations.  Many challenging Burnhams, Struve the Youngers, and even one Aitken, which I am surprised to be able to get with just a 6-inch.  I wonder, do I already have the ideal set-up with the 6-inch and 20-inch, am I chasing phantoms?

A   509 AB: 152; 250x: Delicate split, very faint B settles with seeing and is just visible with direct vision.  No Gaia data for the secondary.  The pair is quite far away, it is less likely to be binary, though an orbit could be tried.  

06h 37m 51.23s -08° 46' 54.1" P.A. 137.00 sep 1.4 mag 7.67,9.66 Sp K0 dist. 337.84 pc (1102.03 l.y.)

AC    3 AB: 152; 250x: Very slightly notched elongation, needs more aperture to resolve.  No Gaia data for the secondary, an orbit could be tried.

06h 11m 43.72s -04° 39' 55.6" P.A. 201.00 sep 0.7 mag 6.34,8.15 Sp B9pHgMn dist. 176.06 pc (574.31 l.y.)

ARG  12 AB: 152; 125x: Unequal, well split.  15% PRO, 1,382 AU WS, 2.4+2.4 Msol, it is possibly binary and an orbit could be tried.

06h 05m 15.92s -25° 01' 36.1" P.A. 296.00 sep 4.6 mag 8.38,8.46 Sp A2IV/V dist. 274.73 pc (896.17 l.y.)

H 5 100 AB: 152; 125x: Superwide, 4 Dm.  -95% PRO, it is not binary.

ARN  37 AC: 152; 140x: Superwide, 1 Dm.  While they share a similar proper motion, they have 0% PRO, and the WS is 19,039 AU, far too apart to be binary.

05h 58m 24.44s +01° 50' 13.6" P.A. 206.00 sep 36.7 mag 5.91,10.44 Sp A5m dist. 111.73 pc (364.46 l.y.)

BU   16 AB: 152; 250x: Excellent close pair, 3 Dm.  15% PRO, 586 AU WS, 5.2+2.5 Msol, it is probably binary and an orbit should be tried.

06h 01m 50.42s -10° 35' 52.6" P.A. 354.00 sep 2.0 mag 4.99,7.96 Sp B5III dist. 240.38 pc (784.12 l.y.)

BU   17 AB: 152; 200x: Faint B, well separated.  -88% PRO, it is not binary.

06h 08m 25.39s -11° 08' 46.6" P.A. 192.00 sep 3.6 mag 6.92,9.34 Sp A5IV dist. 104.93 pc (342.28 l.y.)

BU   18 AB: 152; 250x: Nice close pair, 2 Dm, could resolve with 140x but best seen at 250x.  -31% PRO, it is not binary.

06h 16m 41.61s -12° 02' 50.1" P.A. 286.00 sep 1.9 mag 7.06,8.42 Sp F2V dist. 161.81 pc (527.82 l.y.)

BU   19 AB: 152; 125x: 2 Dm, well split.  93% PRO, 1,607 AU WS, 4.0+2.4 Msol, however it has poor proper motion fit.  An orbit can be tried all the same.

06h 41m 59.70s -16° 00' 25.8" P.A. 167.00 sep 3.8 mag 7.07,9.00 Sp B8/9III dist. 526.32 pc (1716.86 l.y.)

BU   20 AB: 152; 250x: Fairly close, good close split, at 200x and 250x.  -16% PRO, it is not likely binary.

06h 48m 48.78s -16° 12' 41.8" P.A. 27.00 sep 3.3 mag 7.82,9.90 Sp K1III dist. 242.13 pc (789.83 l.y.)

BU  195 AB: 152; 125x: Well split 3 Dm.  -2% PRO, with nearly as much error, it is not likely binary.

06h 42m 27.58s -23° 13' 57.4" P.A. 216.00 sep 5.8 mag 7.12,9.59 Sp B3V dist. 636.94 pc (2077.7 l.y.)

BU  324 AB: 152; 250x: Close split, 2 Dm.  -20% PRO, it is not binary.

06h 49m 44.00s -24° 04' 33.7" P.A. 210.00 sep 1.8 mag 6.56,7.93 Sp A0/1V dist. 245.7 pc (801.47 l.y.)

BU  325 AB: 152; 200x: Faint pair, close split.  50% PRO, 1,406 AU WS, 4.5+3.3 Msol, though it has a weak radial velocity fit.  It is possible to be binary, an orbit should be tried.

06h 51m 49.39s -26° 34' 54.2" P.A. 38.00 sep 1.7 mag 7.86,9.11 Sp B2V dist. 1063.83 pc (3470.21 l.y.)

BU  567 AB: 152; 200x: Very much fainter, well separated B, just barely seen with direct vision, 4 Dm.  29% PRO, 313 AU WS, 2.1+0.8 Msol, with only a 0.04 PM vector.  It might be binary, an orbit should be tried. 

06h 15m 29.66s -04° 54' 52.7" P.A. 239.00 sep 4.3 mag 6.01,10.00 Sp A5IVs dist. 65.06 pc (212.23 l.y.)

BU  568 AB: 152; 250x: Barest hairline split, nearly 2 Dm, with seeing and 250x only.  26% PRO, 273 AU WS, 3.6+2.7 Msol, only 0.09 PMV, it could be binary, and orbit should be tried.

06h 23m 47.66s -19° 47' 07.6" P.A. 155.00 sep 0.8 mag 6.85,8.18 Sp B8IIIHewk dist. 411.52 pc (1342.38 l.y.)

BU  569 AB: 152; 250x: Challenging, very close split and large delta, with seeing and 250x only. -1% PRO, it is not likely binary.

06h 25m 14.75s -10° 55' 55.0" P.A. 115.00 sep 1.7 mag 7.94,9.67 Sp K0 dist. 186.22 pc (607.45 l.y.)

BU 1008 AB: 152; 200x: Propus.  Gorgeous light orange A, much fainter close B on A's diffraction ring. No Gaia data for the companion.  SOC grade 5 orbit, 1031-year period.  If the orbit is correct, the pair will drastically and quickly tighten over the next 10-20 years.

06h 14m 52.69s +22° 30' 24.6" P.A. 258.00 sep 1.8 mag 3.52,6.15 Sp M2III dist. 117.92 pc (384.66 l.y.)

GAN   2 AB: 152; 250x: Faint, wide B needed averted vision to detect, 1 Dm.  62% PRO, 245 AU WS, 0.9+0.5 Msol, and RVD 2.2 < EV 3.1, but with a low 0.01 RVD.  It might be binary, an orbit should be tried.

05h 54m 30.15s -19° 42' 15.6" P.A. 20.00 sep 10.7 mag 7.60,10.57 Sp G6V dist. 23.57 pc (76.89 l.y.)

H 2  60 AB: 152; 125x: Wide, white stars, 1 Dm.  -4% PRO, 2,715 AU WS, 3.9+2.0 Msol, it is not likely binary.

06h 36m 41.07s -22° 36' 53.1" P.A. 336.00 sep 9.0 mag 6.39,9.31 Sp B5V dist. 322.58 pc (1052.26 l.y.)

HJ 3825 AB: 152; 125x: Faint B, 3 Dm, super wide.  60% PRO, 1,772 AU WS, 1.4+0.7 Msol, but the RVD 2.6 > EV 1.4, it is not binary.

06h 02m 06.48s -27° 25' 38.2" P.A. 338.00 sep 32.7 mag 7.22,10.46 Sp F5IV/V dist. 56.82 pc (185.35 l.y.)

HJ 3863 AB: 152; 250x: Unequal close split, with 250x.  48% PRO, 724 AU WS, 3.1+2.1 Msol, it is likely binary and needs an orbit.

06h 29m 25.56s -22° 35' 27.9" P.A. 120.00 sep 2.8 mag 7.03,8.69 Sp A1V dist. 185.19 pc (604.09 l.y.)

HJ 3871 AB: 152; 125x: Easy, well split, 1 Dm.  45% PRO, 974 AU WS, 2.1+1.6 Msol, and RVD 1.1 < EV 2.6, it is likely binary and needs an orbit.

06h 34m 08.11s -29° 37' 46.8" P.A. 354.00 sep 7.7 mag 7.13,8.21 Sp A1V dist. 133.33 pc (434.92 l.y.)

HJ 3891 AB: 152; 125x: 2 Dm, nice medium split.  84% PRO, 3,014 AU WS, 6.4+3.5 Msol, it is possibly binary and needs an orbit.

06h 45m 31.20s -30° 56' 56.3" P.A. 223.00 sep 5.0 mag 5.66,8.21 Sp B2III dist. 581.4 pc (1896.53 l.y.)

S   524 AB: 152; 125x: Unequal superwide.  68% PRO, 4,979 AU WS, 1.8+1.7 Msol, and RVD 0 < EV 1.1, it is likely binary and needs an orbit.

06h 34m 07.10s +22° 07' 27.2" P.A. 244.00 sep 53.0 mag 7.17,7.41 Sp A3 dist. 85.98 pc (280.47 l.y.)

S   534 AB: 152; 125x: 3 Dm, supwewide.  65% PRO, 884 AU WS, 1.6+1.0 Msol, and RVD 1.8 < EV 2.3, it is possibly binary and needs an orbit tried.

06h 42m 46.04s -22° 26' 54.9" P.A. 145.00 sep 18.1 mag 6.27,8.30 Sp F2V dist. 54.32 pc (177.19 l.y.)

S   538 AB: 152; 125x: Superwide.  33% PRO, 5,671 AU WS, 2.7+2.1 Msol, and RVD 1.1 < EV 1.2, it is possibly binary and an orbit should be tried.

06h 49m 38.05s -24° 08' 36.5" P.A. 4.00 sep 26.9 mag 7.16,8.18 Sp A2 dist. 247.52 pc (807.41 l.y.)

SHJ  73 AB: 152; 125x: Superwide.  -59% PRO, it is not binary.

06h 36m 22.85s -18° 39' 35.6" P.A. 264.00 sep 17.4 mag 5.79,7.38 Sp G5III dist. 60.86 pc (198.53 l.y.)

STF 922 AB: 152; 200x: Well-split 3 Dm B seen with averted vision only.  -42% PRO, it is not binary.

06h 38m 18.76s +64° 44' 06.0" P.A. 138.00 sep 9.5 mag 7.66,10.82 Sp F4V dist. 78.06 pc (254.63 l.y.)

STF 929 AB: 152; 125x: Unequal, well-split, seems to float in front of the rich field.  -69% PRO, it is not binary.

06h 35m 22.03s +37° 42' 55.1" P.A. 24.00 sep 6.5 mag 7.35,8.44 Sp G5 dist. 184.16 pc (600.73 l.y.)

STF 941 AB: 152; 250x: Unequal white stars, closely split, best with high power.  -11% PRO, it is not binary.

06h 38m 40.76s +41° 34' 53.4" P.A. 83.00 sep 2.0 mag 7.25,8.17 Sp B9 dist. 344.83 pc (1124.84 l.y.)

STF3116 AB: 152; 200x: Relatively bright white A and much fainter, well separated B.  27% PRO, 2,106 AU WS, 6.3+2.6 Msol, it is possibly binary and needs an orbit.

06h 21m 24.71s -11° 46' 23.6" P.A. 23.00 sep 3.9 mag 5.55,9.70 Sp B1Vpe+B9V dist. 337.84 pc (1102.03 l.y.)

STT 123 AB: 152; 250x: Easy close split, 2 Dm.  -2% PRO, it is not likely binary.

05h 54m 09.53s +10° 14' 39.4" P.A. 187.00 sep 2.1 mag 7.34,9.05 Sp G5 dist. 132.8 pc (433.19 l.y.)

STT 125 AB: 152; 250x: Suspected at low power, nice clean split at 250x, 1 Dm. -40% PRO, it is not binary.

05h 59m 42.46s +22° 28' 15.0" sep 1.4 mag 7.89,8.89 Sp A0

STT 131 AB: 152; 250x: Very delicate close split, 4 Dm B.  No Gaia data for B.

06h 07m 25.84s +36° 16' 28.7" P.A. 277.00 sep 1.5 mag 7.04,9.45 Sp B9II dist. 301.2 pc (982.51 l.y.)

STT 132 AB: 152; 250x: Very faint B, closely separated, 4 Dm.  -94% PRO, it is not binary.

06h 08m 11.68s +37° 58' 57.9" P.A. 332.00 sep 1.8 mag 7.16,9.63 Sp A2V dist. 184.5 pc (601.84 l.y.)

STT 133 AB: 152; 250x: Close split, able to see 4 Dm B with direct vision.  Excellent pair. -1% PRO, it is probably not binary. 

06h 08m 02.39s +21° 17' 43.5" P.A. 33.00 sep 3.3 mag 7.35,11.17 Sp F0 dist. 103.09 pc (336.28 l.y.)

STT 134 AB: 152; 125x: Superwide, 2 Dm.  49% PRO, 27,171 AU WS, 5.6+3.6 Msol, it is too far apart to be binary.

06h 09m 15.94s +24° 25' 40.3" P.A. 189.00 sep 31.2 mag 7.55,9.14 Sp G0

STT 140 AB: 152; 250x: Very delicate B, close separation, 4 Dm. 17% PRO, 1,365 AU WS, 4.2+2.1 Msol, it is possibly binary and needs an orbit.

06h 26m 37.73s +15° 31' 25.3" P.A. 119.00 sep 3.0 mag 6.92,10.08 Sp B9.5IV dist. 337.84 pc (1102.03 l.y.)

STT 142 AB: 152; 200x: B flashes with averted vision only.  -3% PRO, it is not likely binary.

06h 29m 55.96s +07° 06' 43.2" P.A. 353.00 sep 8.5 mag 7.12,10.57 Sp B2.5IV/V dist. 409.84 pc (1336.9 l.y.)

STT 145 AB: 152; 250x: Wow! Super-faint B, 2 Dm, a close clean split, held direct.  No Gaia data for B.  

06h 32m 20.69s +15° 42' 22.3" P.A. 336.00 sep 1.4 mag 7.30,9.93 Sp F5 dist. 198.02 pc (645.94 l.y.)

STT 152 AB: 152; 250x: Unequal, barest hairline split.  No Gaia data for B.  Given how close it is, it is possibly binary and an orbit should be tried.

06h 39m 33.12s +28° 15' 47.4" P.A. 34.00 sep 0.8 mag 6.21,7.85 Sp B7III dist. 258.4 pc (842.9 l.y.)

STT 160 AB: 152; 250x: Very close split, with seeing B settles to just within A's diffraction ring. No Gaia data for B.  Since it is relatively close to us, an orbit should be tried.

06h 54m 21.32s +21° 09' 40.8" P.A. 188.00 sep 1.3 mag 6.66,9.92 Sp K1III dist. 118.48 pc (386.48 l.y.)

STT 545 AB: 152; 250x: Seen with 125x but best seen 250x, bright light yellow A and fairly close, much fainter B.  The refractor's clean star images make it possible.  No Gaia data for B.  SOC grade 5 orbit, 471-year period.

05h 59m 43.24s +37° 12' 45.9" P.A. 304.00 sep 4.2 mag 2.60,7.20 Sp A0V dist. 50.76 pc (165.58 l.y.)

STTA 72 AB: 152; 125x: Superwide.  -95% PRO, it is not binary.

06h 24m 43.95s +59° 40' 10.4" P.A. 305.00 sep 46.1 mag 7.58,10.84 Sp K0

WEB   5 AB: 152; 125x: Superwide 2 Dm.  100% PRO (4% error), 9,323 AU WS, 2.8+1.7 Msol, but RVD 2.1 > EV 0.9, it is not binary. 

06h 09m 39.64s +43° 08' 26.7" P.A. 216.00 sep 43.8 mag 7.10,9.19 Sp A0 dist. 258.4 pc (842.9 l.y.)

8 & 9 january 2025

A couple of frustrating nights.  Transparency was forecasted to be better than it was -- though I should have expected the low-lying marine haze which typically develops at the bottom of the bowl formed by the Bay Area's surrounding hills.  And seeing was below average to poor, so I limited myself to the 7-inch mask on my 20-inch.

I set-up and tried collimating my new-to-me 8-inch Zerochromat, but I could not get it right.  Since I removed the back plate, I think I have not reinstalled it correctly, and the tube holding the corrector is probably out of line.  I will keep it set-up in the back since we should not have any rain in the next few days.

Both nights I tried to see my "discovery" of the close faint companion to STF 560.  I could not see it with the 20-inch visually, but I did see it using night vision.  The primary was bloated, and the faint but apparent companion was sitting on the edge of the disk.  My imaging run is scheduled for next week so hopefully it will turn up this time.  BU 1046 has similar stats (5.01/12.20 4.5") to my star, and Burnham needed the 36-inch Great Refractor to "detect" it (his word).

PMV = Proper Motion Vector, a check that the two stars are travelling through space (from our perspective) at similar rates and directions.  I'm adding this to my analysis as I had neglected it before (relying mainly on parallax overlap).

STF 633 AB: 178; 140x: White stars, wide faint B seen with averted vision at first but can then hold direct.  18% PRO, 920 AU WS, 1.8+0.7 Msol, but the RVD 3.3 > EV 2.2, it is not binary.

05h 10m 42.70s +63° 35' 50.0" P.A. 342.00 sep 11.8 mag 6.77,10.57 Sp F0 dist. 86.13 pc (280.96 l.y.)

STF 638 AB: 178; 140x: Well separated, nearly 1 Dm, light orange stars.  -68% PRO, it is not binary.

05h 14m 19.85s +69° 49' 25.3" P.A. 221.00 sep 5.3 mag 7.52,9.06 Sp K1IV dist. 102.99 pc (335.95 l.y.)

STF 661 AB: 178; 300x: Poor seeing, closely separated white stars, 4 Dm.  -82% PRO, it is not binary.

05h 13m 13.87s -12° 56' 26.4" P.A. 357.00 sep 2.2 mag 4.43,6.77 Sp B9V dist. 223.21 pc (728.11 l.y.)

STF 667 AB: 178; 140: Light orange A, well separated, 2 Dm.  -38% PRO, it is not binary.

05h 14m 41.31s -07° 04' 18.1" P.A. 315.00 sep 4.2 mag 7.15,8.78 Sp K2 dist. 297.62 pc (970.84 l.y.)

STF 670 AB: 178; 140x: Close split with low magnification, half Dm.  -65% PRO, it is not binary.

05h 16m 43.88s +18° 26' 22.4" P.A. 165.00 sep 2.6 mag 7.72,8.28 Sp B3V dist. 199.2 pc (649.79 l.y.)

STF 674 AB: 178; 140x: White stars, well separated, 3 Dm.  15% PRO, 730 AU WS, 1.8+0.9 Msol, it is possibly binary and needs an orbit.

05h 17m 31.15s +20° 07' 54.6" P.A. 149.00 sep 10.1 mag 6.82,9.68 Sp F7V+F5IV dist. 81.1 pc (264.55 l.y.)

STF 680 AB: 178: 140x: White stars, well separated, 4 Dm.  50% PRO, 997 AU WS, 2.6+1.0 Msol, but RVD 4.1 > EV 2.6, it is not binary.

05h 19m 14.69s +20° 08' 04.5" P.A. 203.00 sep 9.1 mag 6.22,9.66 Sp K0III dist. 120.34 pc (392.55 l.y.)

STF 688 AB: 178; 140x: Near equal, well separated.  69% PRO, 2,066 AU WS, 2.5+2.4 Msol, RVD 0.7 < EV 2.1, good PMV, it is likely binary and needs an orbit.

05h 19m 20.88s -10° 44' 49.9" P.A. 95.00 sep 10.5 mag 7.52,7.55 Sp K3V+F1

STF 701 AB: 178; 140x: White A, light yellow B, well separated, 3 Dm.  74% PRO, 865 AU WS, 2.8+1.8 Msol, weak PMV.  It is possibly binary and an orbit should be tried.

05h 23m 18.50s -08° 24' 55.9" P.A. 138.00 sep 6.2 mag 6.13,8.09 Sp B8III dist. 122.7 pc (400.25 l.y.)

STF 743 AB: 178; 300x: Close separation, white stars, 1 Dm.  -30% PRO, it is not binary.  

05h 34m 43.20s -04° 23' 31.5" P.A. 283.00 sep 1.8 mag 7.74,8.25 Sp B5V

STF 752 AB: 178; 140x: Bright A and faint wide B.  Too large of a parallax error to tell if binary.  It has negative PMV, and not likely to be binary.

05h 35m 25.98s -05° 54' 35.6" P.A. 141.00 sep 11.2 mag 2.77,7.73 Sp +B8III dist. 714.29 pc (2330.01 l.y.)

STF 774 AB: 178; 140x: Closely separated with 140x, but the bright primary's disk and diffraction are so expanded with the poor seeing, it nearly touches the companion.  Too bright for Gaia, no data.  There is a SOC grade 5 orbit, 1508-year period, so who knows?

05h 40m 45.52s -01° 56' 33.3" P.A. 166.00 sep 2.4 mag 1.88,3.70 Sp +B0III dist. 225.73 pc (736.33 l.y.)

STF 790 AB: 178; 140x: Light orange A and yellow wide B, 2 Dm.  -21% PRO, and RVD 3.3 > EV 3.0, it is not binary.

05h 46m 02.87s -04° 16' 06.5" P.A. 88.00 sep 7.0 mag 6.43,8.98 Sp G8III: dist. 111.48 pc (363.65 l.y.) 

3 december 2024

Conditions were to be the same as the night before, with good seeing and hazy, but workable, transparency.  I decided to open my 20-inch but when I went out after finishing the evening chores found the mirror had dewed over.  Probably just staying too cold during the day.  I decided to close up and planned to wash it the following day.  I uncovered the 6-inch and proceeded to observe more CDSA objects like the night before.  I didn't have any alignment issues and logged many items before taking a break at 9:00pm.  I continued until 11:00pm and logged more than 75 observations in all!  I essentially stayed in the same RA and just went down the list, moving the scope primarily in Dec.  The setting circles were dialed in so I could have the binaries in the high-powered field -- it was very efficient.   Had a quick view of the Trapezium at the end: E & F showed plainly, and each star in the field floated in the nebulous turbulence with perfect disks and nice round diffraction rings.  

AG   67 AB: 152; 150x: White A, wide 3 Dm B seen with averted vision and could then hold.  66% PRO, 4,590 AU WS, 2.7+1.1 Msol, but the RVD 4.2 > EV 1.2, it is not binary.

03h 28m 57.21s +40° 11' 11.3" P.A. 349.00 sep 23.5 mag 7.49,10.37 Sp G5

AG   68 AB: 152; 150x: White stars, very faint wide B.  31% PRO, 2,029 AU WS, 2.2+1.1 Msol, but RVD 2.5 > EV 1.7, it is not binary.

03h 32m 11.94s +11° 32' 32.7" P.A. 249.00 sep 16.9 mag 6.79,9.87 Sp A1V dist. 220.26 pc (718.49 l.y.)

BGH   2 AB: 152; 150x: Superwide, 2 Dm. -85% PRO, it is not binary.

04h 29m 30.35s +17° 51' 47.4" P.A. 9.00 sep 109.5 mag 6.95,9.06 Sp G5 dist. 46.4 pc (151.36 l.y.)

BU 12 AB: 152; 200x: Easy white A and faint blue B, split with 150x but better seen 200x.  -7% PRO, it is not binary.

03h 24m 24.60s -13° 59' 34.6" P.A. 281.00 sep 2.4 mag 7.02,9.13 Sp A2V dist. 197.24 pc (643.4 l.y.)

BU 84 AB: 152; 250x: Excellent close split high power, nearly 1 Dm.  No Gaia data for the secondary.  SOC grade 5 orbit, 1130-year period, anyone's guess.

03h 16m 00.86s -05° 55' 07.3" P.A. 7.00 sep 1.0 mag 6.38,7.93 Sp B9V dist. 201.61 pc (657.65 l.y.)

BU 88 AB: 152; 150x: Wide B seen with averted vision, then can hold.  -89% PRO, it is not binary.

04h 37m 36.13s -02° 28' 24.7" P.A. 75.00 sep 28.9 mag 5.22,11.80 Sp F0V dist. 29.43 pc (96 l.y.)

BU 184 AB: 152; 150x: Pretty yellow-white stars, unequal, close split with low power.  11% PRO, 218 AU WS, 2.0+1.8 Msol, it is possibly binary and needs an orbit tried.

04h 27m 55.32s -21° 30' 14.8" P.A. 248.00 sep 1.9 mag 7.40,7.70 Sp F6V dist. 100.7 pc (328.48 l.y.)

BU 401 AB: 152; 150x: Very faint wide B seen averted vision only.  3% PRO, 203 AU WS, 1.5+0.6 Msol, RVD 2.9 < EV 4.3, there is a small chance it's binary and an orbit should be tried.

03h 50m 16.10s -01° 31' 21.5" P.A. 253.00 sep 4.6 mag 6.54,10.51 Sp F2 dist. 43.67 pc (142.45 l.y.)

BU 527 AB: 152; 250x: Very finely split at 150x, better seen 250x, faint 1 Dm pair.  -69% PRO, it is not binary.

03h 06m 04.02s -13° 26' 05.5" P.A. 99.00 sep 1.4 mag 8.20,8.88 Sp F5V dist. 124.38 pc (405.73 l.y.)

BU  532 AB: 152; 250x: 3 Dm B seen averted vision only, very closely split.  -58% PRO, it is not binary.

03h 33m 15.55s -10° 03' 35.8" P.A. 270.00 sep 3.3 mag 8.61,12.11 Sp F2 dist. 185.19 pc (604.09 l.y.)

BU 749 AB: 152; 250x: Very finely split, 1 Dm, bluish B, very nice.  -68% PRO, it is not binary.

05h 07m 30.67s +55° 32' 24.2" P.A. 241.00 sep 1.3 mag 7.54,9.22 Sp F8 dist. 142.45 pc (464.67 l.y.)

The following three pairs are part of a very pretty group of stars in Taurus, which I saw as a whole in the 60mm scope.  BUP 62 is in the center of this Aladin screengrab, the bright star and the 3 Dm to its NNW.  ARN 36 is the bright pair with the companion to the SW.  STF 554 is the closely separated pair of this companion (and the only true binary of the group).  The second Aladin image shows the CPM of the stars.  Obviously, they formed in the same dust cloud and cluster, but most are to far apart to be gravitationally bound.

BUP  62 CH: 152; 125x: Super wide 3 Dm.  -94% PRO, it is not binary (but shares similar CPM).

04h 30m 38.83s +15° 41' 30.0" P.A. 339.00 sep 162.3 mag 5.48,8.94 Sp Am dist. 44.92 pc (146.53 l.y.)

ARN 36 CI: 152: 125x: 81 and 80 Tau, wide bright near equal.  -52% PRO, it is not binary (but is CPM)

04h 30m 38.83s +15° 41' 30.0" P.A. 246.00 sep 484.5 mag 5.48,5.70 Sp Am dist. 44.92 pc (146.53 l.y.)

STF 554 AB: 152; 250x: Delicate, 1 Dm close split.  15% PRO, 78 AU WS, 1.8+1.1 Msol, it is binary.  SOC grade 3 orbit, 172.5-year period, it will tighten in the same PA to less than 1" in the next 20 years.

04h 30m 08.60s +15° 38' 16.2" P.A. 15.00 sep 1.4 mag 5.70,8.12 Sp F0V+G0V dist. 45.83 pc (149.5 l.y.)

STTA45 AB: 60; 40x: 1 Dm, super wide.  77% PRO, 1,420 AU WS, 1.1+0.9 Msol, and RVD 0.5 < EV 1.6, it is likely binary and needs an orbit.

04h 15m 28.86s +06° 11' 13.6" P.A. 316.00 sep 64.6 mag 6.38,7.01 Sp G0IV+G3V dist. 21.33 pc (69.58 l.y.)

HJ  346 AB: 152; 125x: 4 Dm, super wide.  -43% PRO, 4,083 AU WS, 2.5+0.7 Msol, and the RVD 4.2 > EV 1.2, it is not binary.

04h 41m 19.76s +28° 36' 53.9" P.A. 55.00 sep 43.2 mag 5.73,10.72 Sp A2V dist. 116.96 pc (381.52 l.y.)

HJ  689 AB: 152; 150x: 3 Dm, wide.  -55% PRO, it is not binary.

04h 58m 10.90s -02° 12' 46.0" P.A. 277.00 sep 20.9 mag 6.35,11.90 Sp A2V dist. 133.33 pc (434.92 l.y.)

HJ 1139 AB: 152; 150x: 2 Dm, super wide.  42% PRO, 6,448 AU WS, 2.0+1.2 Msol, but RVD 1.8 > EV 0.9, it is not binary.

03h 51m 43.79s +70° 30' 29.1" P.A. 177.00 sep 47.2 mag 7.52,9.61 Sp A3 dist. 147.71 pc (481.83 l.y.)

HJ 3548 AB: 152; 150x: Wide B seen with averted vision only.  -3% PRO, 722 AU WS, 1.4+0.6 Msol, but RVD 3.3 > EV 2.2, it is not binary.

03h 03m 47.04s -21° 21' 41.2" P.A. 125.00 sep 12.2 mag 7.54,11.17 Sp K0V dist. 58.31 pc (190.21 l.y.)

HJ 3555 AB: 152; 150x: Low to the horizon with shaky seeing, light-yellow stars, A bright and 4 Dm wide B.  -23% PRO, it would not seem to be binary.  Only 70 AU WS, however, 1.5+0.8 Msol, and RVD 2.5 < EV 7.6, and there is a SOC grade 3 orbit 268-year period which convincingly shows an orbit, it should be binary.  I think if the other data besides parallax are in favor, it should tip the scale toward binarity.

03h 12m 04.53s -28° 59' 15.4" P.A. 301.00 sep 5.4 mag 3.98,7.19 Sp F8V dist. 14.24 pc (46.45 l.y.)

HJ 3572 AB: 152; 150x: Faint unequal pair, well separated.  -33% PRO, 1,789 AU WS, 1.4+1.3 Msol, and RVD 0.3 < EV 1.6.  It is not likely binary given the parallax.

03h 23m 57.29s -26° 12' 58.1" P.A. 95.00 sep 20.7 mag 8.24,8.53 Sp F4V+F4V dist. 105.93 pc (345.54 l.y.)

HJ 3632 AB: 152; 150x: 2 Dm, well separated.  94% PRO, 1,721 AU WS, 2.0+1.3 Msol, and RVD 1.4 < EV 1.9, it is binary and needs an orbit.

04h 15m 06.08s -30° 04' 19.0" P.A. 163.00 sep 11.0 mag 7.78,9.68 Sp A0V dist. 140.25 pc (457.5 l.y.)

HJ 5461 AB: 152; 150x: Very wide B is 4 Dm to A, seen direct but brightens with averted vision.  10% PRO, 3,504 AU WS, 3.0+1.0 Msol, there is a possibility it is binary, and an orbit should be tried.

04h 34m 37.99s +28° 57' 40.1" P.A. 102.00 sep 25.3 mag 5.87,10.32 Sp B9pHg dist. 148.81 pc (485.42 l.y.)

LDS  93 AB: 60; 40x: 1 Dm, wide, best seen in the 60mm. Both stars have planets!  HD20782, HD20781.  They share a very high common proper motion slightly off in both RA and Dec, but there is -30% PRO, 9,087 AU WS (a bit too far apart), 1.1+0.9 Msol, and RVD 0.9 > EV 0.6, it's not binary.  Interesting optical pair.

03h 20m 03.58s -28° 51' 14.7" P.A. 358.00 sep 253.0 mag 7.44,8.54 Sp G1.5V+G9V dist. 35.37 pc (115.38 l.y.)

LDS2246 AB: 60; 40x: Super wide, more than 1 Dm.  Only 4% PRO but a whopping 11,210 AU WS, 2.2+1.5 Msol, and RVD 1.3 > EV 0.8, it is not binary. 

04h 30m 33.63s +16° 11' 38.5" P.A. 131.00 sep 250.3 mag 4.78,6.54 Sp A6IV dist. 43.2 pc (140.92 l.y.)

OPI 5 AC 60; 40x: Component of HJ 1146 AB, PA to NNE, which actually has a closer separation, though fainter star (and is not binary, -96% PRO).  OPI 5 is PS to WNW, 1 Dm wide in the 60mm.  -62% PRO, it is not binary.

04h 38m 08.93s +71° 28' 12.0" P.A. 279.00 sep 111.9 mag 7.67,8.50 Sp A2 dist. 184.84 pc (602.95 l.y.)

S   430 AB: 152; 150x Unequal, super wide.  41% PRO, 5,773 AU WS, 2.2+2.0 Msol, it is possibly binary and needs an orbit.

03h 38m 18.83s +44° 48' 06.5" P.A. 96.00 sep 41.0 mag 7.21,7.53 Sp A0 dist. 152.67 pc (498.01 l.y.)

S   436 AB: 60; 40x: Unequal, super wide.  1% PRO but with 2.3% error, 9,679 AU WS, 2.8+2.4 Msol.  Given the mass there may be some possibility it's binary, and orbit should be tried.

03h 49m 19.76s +57° 07' 05.8" P.A. 76.00 sep 58.3 mag 6.46,7.17 Sp B9V+A0V dist. 148.59 pc (484.7 l.y.)

S   457 AB: 152; 125x: Super wide, near equal. -65% PRO, it is not binary.

04h 53m 04.82s -01° 16' 32.8" P.A. 355.00 sep 41.0 mag 7.93,8.07 Sp A dist. 181.16 pc (590.94 l.y.)

S   463 AB: 152; 150x: 2 Dm, super wide.  -24% PRO, and RVD 2.7 > EV 0.9, it is not binary. 

05h 01m 47.66s +11° 22' 31.0" P.A. 29.00 sep 32.5 mag 7.18,10.13 Sp B8 dist. 465.12 pc (1517.22 l.y.)

SHJ 45 AB: 60; 40x: 3 Dm, super wide.  19% PRO, 3,684 AU WS, 2.7+1.2 Msol, it is possibly binary and needs an orbit.

04h 35m 39.23s +10° 09' 39.3" P.A. 300.00 sep 69.2 mag 4.27,7.84 Sp A5m dist. 47.89 pc (156.22 l.y.)

SHJ  49 AB 60; 40x: Nearly 2 Dm, wide.  23% PRO, but a very wide 14,864 AU WS, 4.7+3.3, it would be surprising if it's binary, but an orbit should be tried.  AC has 70% PRO, an even more extreme 21,203 AU WS, 4.7+2.1 Msol, and an orbit should be tried.  Perhaps the mass of the system is enough to maintain the large separation in AU.

04h 58m 59.41s +14° 32' 35.7" P.A. 306.00 sep 39.3 mag 6.06,7.43 Sp B7V dist. 349.65 pc (1140.56 l.y.)

STF 312 AB: 152; 250x: Finely split at 150x, better seen at 250x, 1 Dm.  -36% PRO, it is not binary, in spite of the SOC grade 5 orbit.  AC is fainter, wider, and forms a near right angle in PA (but does not share any parallax with the other two, not binary). 

02h 56m 11.32s +72° 53' 10.4" P.A. 48.00 sep 1.7 mag 8.16,8.92 Sp G0 dist. 65.96 pc (215.16 l.y.)

STF 320 AB; 152; 200x: Light-yellow, bright, 4 Dm well separated B.  24% PRO, 1,102 AU WS, 5.0+1.7 Msol, it is possibly binary and needs an orbit.

03h 06m 07.84s +79° 25' 06.7" P.A. 232.00 sep 4.6 mag 5.72,9.15 Sp M2.5III dist. 211.86 pc (691.09 l.y.)

STF 326 AB: 152; 150x: Pale orange stars, 2 Dm, well separated.  At the apex of an equilateral triangle, and the colors are richer with higher magnifications.  -28% PRO, though only 119 AU WS, 0.8+0.5 Msol, RVD 1.5 < EV 4.5.  SOC does not enough orbital elements to create a solution... but it is not likely binary given the parallax.

02h 55m 39.06s +26° 52' 23.6" P.A. 221.00 sep 4.6 mag 7.68,10.02 Sp K2IV+M0V dist. 23.49 pc (76.62 l.y.)

STF 330 AB: 152; 150x: Pale yellow stars, 2 Dm, well separated.  33% PRO, 1,362 AU WS, 2.4+1.3 Msol, it is possibly binary and needs an orbit.

02h 57m 10.61s -00° 34' 28.3" P.A. 192.00 sep 8.9 mag 7.25,9.06 Sp G8III dist. 186.92 pc (609.73 l.y.)

STF 333 AB: 152; 250x: Perfect star images, 1 Dm, clean split with 250x. No Gaia data for the secondary.  SOC grade 4 orbit, it should tighten moderately over the next 20 years.

02h 59m 12.73s +21° 20' 25.6" P.A. 210.00 sep 1.3 mag 5.17,5.57 Sp A2Vs+A2Vs dist. 101.94 pc (332.53 l.y.)

STF 334 AB: 152; 250x: Very fine close split, 1 Dm, white stars, suspect double at 150x, well seen 250x.  -1% PRO, it is not likely binary.

02h 59m 22.44s +06° 39' 07.8" P.A. 307.00 sep 1.1 mag 7.90,8.23 Sp F0 dist. 125.16 pc (408.27 l.y.)

STF 341 AB: 152; 150x: 1 Dm, wide.  -74% PRO, it is not binary.

03h 03m 01.79s -02° 05' 11.2" P.A. 221.00 sep 8.7 mag 7.57,9.97 Sp F5 dist. 53.33 pc (173.96 l.y.)

STF 349 AB: 152; 150x: 1 Dm, wide.  23% PRO, 463 AU WS, 1.4+1.2 Msol, it might be binary and needs an orbit.

03h 10m 50.30s +63° 47' 15.6" P.A. 322.00 sep 5.9 mag 7.92,8.59 Sp F5V dist. 84.18 pc (274.6 l.y.)

STF 367 AB: 152; 250x: Very fine close split, unequal.  No Gaia parallax for the secondary. SOC grade 3 orbit, 370-year period.  Little change the next 20 years.

03h 14m 02.91s +00° 44' 21.3" P.A. 129.00 sep 1.3 mag 8.14,8.17 Sp F8 dist. 65.75 pc (214.48 l.y.)

STF 401 AB: 152; 150x: Equal, wide white stars.  51% PRO, 1,177 AU WS, 2.1+2.0 Msol, and RVD 0.3 < EV 2.5, it is very likely binary and needs an orbit.

03h 31m 20.76s +27° 34' 18.5" P.A. 270.00 sep 11.5 mag 6.58,6.93 Sp A2V dist. 97.47 pc (317.95 l.y.)

STF 406 AB: 152; 150x: Near equal, wide.  40% PRO, 1,374 AU WS, 2.1+1.4 Msol, and RVD 1.9 < EV 2.1, it is likely binary and needs an orbit.

03h 30m 47.66s +05° 09' 09.5" P.A. 126.00 sep 9.2 mag 7.56,9.33 Sp F0 dist. 182.48 pc (595.25 l.y.)

STF 479 AB: 152; 150x: Unequal, well separated, with a faint third.  -47% PRO, it is not binary.

04h 00m 56.81s +23° 12' 05.4" P.A. 127.00 sep 7.5 mag 6.92,7.76 Sp B9V dist. 328.95 pc (1073.03 l.y.)

STF 541 152; 150x, CD the only challenging pair, well separated near equal faint stars, but -25% PRO, it is not binary.  AB is noted as "parallax indicates as physical, with 339" separation!   Kap02 Tau is it's secondary, but there is -56% PRO, it is not binary, CPM only.

04h 25m 23.28s +22° 14' 38.0" P.A. 329.00 sep 5.5 mag 10.60,10.00

STF 550 AB: 60; 40x: 1 Dm, wide. -19% PRO, it is not binary.

04h 32m 01.84s +53° 54' 39.0" P.A. 308.00 sep 10.4 mag 5.78,6.82 Sp B0III dist. 217.39 pc (709.13 l.y.)

STF 552 AB: 152; 150x: Unequal, white, wide.  48% PRO, 2,663 AU WS, 3.5+3.2 Msol, it is possibly binary and needs an orbit.

04h 31m 24.10s +40° 00' 36.7" P.A. 116.00 sep 9.0 mag 6.78,7.18 Sp B8V dist. 369 pc (1203.68 l.y.)

STF 559 AB: 152; 150x: White near equal stars, well split.  -53% PRO, it is not binary.

04h 33m 33.04s +18° 01' 00.2" P.A. 275.00 sep 3.1 mag 6.97,7.02 Sp B9IVn dist. 134.23 pc (437.86 l.y.)

STF 560 AB: 152; 150x: 3 Dm, very wide.  39% PRO, 2,911 AU WS, 2.3+1.1 Msol, but RVD 2.5 > EV 1.4, it is not binary.  

04h 31m 25.85s -13° 38' 39.2" P.A. 45.00 sep 29.6 mag 6.26,9.33 Sp A2V dist. 112.87 pc (368.18 l.y.)

STF 562 AB: 152; 150x: Excellent close pair, suspected with 150x, best split at 250x, very faint bluish B closely separated from white A. -60% PRO, it is not binary.

04h 34m 45.44s +22° 41' 32.3" P.A. 285.00 sep 1.8 mag 6.82,9.94 Sp F5III dist. 159.49 pc (520.26 l.y.)

STF 565 AB: 152; 200x: Very finely separated, >1 Dm bluish B.  -18% PRO, it is not binary.

04h 38m 07.16s +42° 07' 02.1" P.A. 167.00 sep 1.4 mag 7.68,9.13 Sp K0

STF 570 AB: 152; 150x: White stars, 1 Dm, wide.  -70% PRO, it is not binary.

04h 35m 14.12s -09° 44' 10.9" P.A. 260.00 sep 12.8 mag 6.71,7.64 Sp A1m dist. 62.5 pc (203.88 l.y.)

STF 576 AB: 152; 150x: Near equal wide.  -44% PRO, it is not binary.

04h 37m 59.75s -13° 01' 44.0" P.A. 172.00 sep 12.3 mag 7.33,7.85 Sp B9.5IV dist. 118.2 pc (385.57 l.y.)

STF 584 AB: 152; 125x: 2 Dm wide B seen with averted vision then can hold. -17% PRO, it is not binary. 

04h 50m 05.46s +66° 32' 07.2" P.A. 123.00 sep 12.0 mag 7.61,9.40 Sp K0 dist. 250 pc (815.5 l.y.)

STF 590 AB: 152; 150x: Near equal wide.  -20% PRO, it is not binary.

04h 43m 35.17s -08° 47' 46.4" P.A. 318.00 sep 9.3 mag 6.74,6.78 Sp G5III dist. 653.59 pc (2132.01 l.y.)

STF 612 AB: 152; 150x: Slightly unequal wide.  43% PRO, 478 AU WS, 0.8+0.8 Msol, and RVD 0.1 < EV 2.5, it is likely binary and needs an orbit.

04h 54m 16.64s +07° 22' 22.9" P.A. 200.00 sep 16.0 mag 8.33,8.41 Sp K0

STF 616 AB: 152; 150x: White A and light-yellow B, well separated, 4 Dm.  4% PRO, 241 AU WS, 2.2+1.1 Msol, it is possibly binary and needs an orbit tried.

04h 59m 15.41s +37° 53' 24.9" P.A. 5.00 sep 4.7 mag 5.00,8.21 Sp A1V dist. 52.27 pc (170.5 l.y.)

STF 618 AB: 152; 150x: Near equal, wide.  -12% PRO, 1,053 AU WS, 1.0+0.9 Msol, and RVD 0.3 < EV 1.8.  There is a small chance it's binary, an orbit should be tried.

05h 03m 33.31s +63° 05' 09.3" P.A. 211.00 sep 33.3 mag 7.68,7.98 Sp G0 dist. 32.16 pc (104.91 l.y.)

STF 623 AB: 152; 150x:  2 Dm wide.  -54% PRO, it is not binary.

04h 59m 53.75s +27° 19' 32.2" P.A. 206.00 sep 20.5 mag 6.98,8.72 Sp B7V+A0V dist. 401.61 pc (1310.05 l.y.)

STF 631 AB: 152; 150x: 1 Dm, wide.  -20% PRO, it is not binary.

05h 00m 40.53s -13° 30' 13.3" P.A. 107.00 sep 5.8 mag 7.49,8.77 Sp A0 dist. 348.43 pc (1136.58 l.y.)

STF 636 AB: 152; 150x: 1 Dm, wide.  37% PRO, 681 AU WS, 2.6+1.8 Msol, it is probably binary and needs an orbit.

05h 03m 01.95s -08° 39' 47.4" P.A. 104.00 sep 3.7 mag 7.11,8.52 Sp A0V dist. 188.32 pc (614.3 l.y.)

STF 642 AC: 152; 150x: Very faint, very wide B with averted vision, then can hold direct.  No Gaia parallax data for the companion.  An orbit could be tried to test it.

05h 06m 45.65s -04° 39' 18.6" P.A. 10.00 sep 52.2 mag 5.12,10.80 Sp B9V+A1V dist. 94.7 pc (308.91 l.y.)

STFA  7 AB: 152; 150x: 1 Dm super wide.  -54% PRO, it is not binary. 

03h 31m 03.47s +27° 43' 53.6" P.A. 234.00 sep 44.1 mag 7.41,7.81 Sp B9 dist. 120.05 pc (391.6 l.y.)

STFA 10 AB: 60; 40x: Bright stars, super wide.  -59% PRO, it is not binary.

04h 28m 39.74s +15° 52' 15.2" P.A. 347.00 sep 336.9 mag 3.41,3.94 Sp A7III dist. 46.1 pc (150.38 l.y.)

STT  49 AB: 152; 200x: Very faint B outside of A's diffraction ring, reminds me of the brighter and smaller/fainter galaxies of M51.  -12% PRO, it is not likely binary.

03h 00m 31.51s +18° 00' 18.1" P.A. 48.00 sep 2.3 mag 6.80,9.92 Sp A0 dist. 122.4 pc (399.27 l.y.)

STT  67 AB: 152; 200x: Light orange stars, B very faint and very closely split, just outside A's diffraction ring.  7% PRO, 524 AU WS, 6.2+2.6, and RVD 3.3 < EV 5.4, is it possibly binary and an orbit should be tried.

03h 57m 08.32s +61° 06' 32.2" P.A. 49.00 sep 1.7 mag 5.25,8.06 Sp K3I-II dist. 448.43 pc (1462.78 l.y.)

STT  68 AB: 152; 150x: Wide near equal.  48% PRO, wide 11,385 AU WS, 2.8+1.9 Msol, it could be binary and an orbit should be tried.

03h 59m 44.66s +48° 09' 04.6" P.A. 176.00 sep 39.1 mag 7.78,9.22 Sp B9 dist. 259.74 pc (847.27 l.y.)

STT  71: 152; 380x: Tantalizingly too close to resolve, appears as two photocenters in the olive shape, B is hazy due to faintness.  No Gaia parallax data for the secondary.  An orbit should be tried to test it.

04h 06m 55.82s +33° 26' 47.0" P.A. 229.00 sep 0.7 mag 6.86,8.66 Sp B3V+B5V: dist. 291.55 pc (951.04 l.y.)

STT  84 AB: 152; 150x: Unequal, well separated.  -36% PRO, it is not binary.

04h 31m 04.08s +06° 47' 28.7" P.A. 255.00 sep 9.5 mag 7.23,8.11 Sp K0IV dist. 84.1 pc (274.33 l.y.)

STT  90 AB: 152; 250x: Lovely close split, white A, bluish B, 2 Dm.  -4% PRO, 220 AU WS, 2.1+1.4 Msol, there is a small change it is binary, an orbit should be tried to test it. 

04h 54m 56.38s +08° 36' 00.0" P.A. 339.00 sep 1.8 mag 7.04,9.00 Sp A0 dist. 145.14 pc (473.45 l.y.)

STT  92 AB: 152; 200x: 3 Dm, wide.  -17% PRO, it is not binary.

05h 00m 18.35s +39° 23' 40.9" P.A. 285.00 sep 4.1 mag 6.02,9.50 Sp F5V dist. 59.74 pc (194.87 l.y.)

STT  95 AB: 152; 250x: Unequal, hairline split, white stars.  No Gaia parallax data for the companion.  SOC grade 4 orbit, 760-year period. 

05h 05m 32.08s +19° 48' 24.4" P.A. 293.00 sep 0.9 mag 7.02,7.56 Sp A5m dist. 137.74 pc (449.31 l.y.)

STT  98 AB: 152; 250x: Beautiful hairline split, unequal, perfect star images.  No Gaia parallax data for either star.  SOC grade 2, nearly circular orbit, 197-year period, it will make a 1/8th turn to the WSW by 2040. 

05h 07m 52.89s +08° 29' 54.3" P.A. 280.00 sep 1.0 mag 5.76,6.67 Sp F0p dist. 64.64 pc (210.86 l.y.)

STTA 36 A-BC: 152; 125: 1 Dm, super wide. -90% PRO, they are not binary.  BC is HU 1062, 8.8/9.3 0.2" and, while lacking Gaia parallax data for the companion, is likely binary because of its closeness.  Interestingly, Gaia has an 11.53 magnitude star 1.3" separated from A, which is not in the WDS, but which is -85% PRO and not binary.  

03h 39m 58.81s +63° 52' 13.4" P.A. 71.00 sep 45.9 mag 6.92,8.27 Sp F5V+G8V dist. 42.52 pc (138.7 l.y.)

STTA 40 AB: 152; 125x: Unequal, super wide.  -42% PRO, it is not binary.

03h 49m 21.74s +24° 22' 51.8" P.A. 309.00 sep 86.8 mag 6.58,7.53 Sp B9.5V dist. 122.25 pc (398.78 l.y.)

STTA 44 AB: 152; 125x: Unequal, super wide. 36% PRO, very wide 62,201 AU WS, 6.3+5.2 Msol, it is too far weighted separation to be binary. 

04h 17m 19.77s +46° 13' 03.6" P.A. 321.00 sep 58.6 mag 7.12,7.99 Sp A2 dist. 1492.54 pc (4868.67 l.y.)

STTA 53 AB: 152; 125x: 1 Dm, super wide.  14% PRO, 4,976 AU WS, 1.4+1.4 Msol, and RVD 0.0 < EV 1.0, it is possibly binary and an orbit should be tried.

04h 37m 26.72s +00° 33' 11.2" P.A. 352.00 sep 78.8 mag 7.55,7.57 Sp G5 dist. 66.14 pc (215.75 l.y.)

2 december 2024

Quite the night on the 6-inch refractor.  Transparency hurt by the typical winter haze, but at least it did not dew over.  The seeing was quite good, constantly improving through the night.  I wasted some time dealing with alignment issues, but even with that I recorded more than 50 observations before closing up at 11:30pm.  Also had views of Jupiter, Rigel (BC, hinted at with high power), the Orion nebula, and Mars -- where I could see some dark markings and a polar ice cap, but little else.

BU    9 AB: 152; 250x: High power only, 2 Dm B appears as a brightening on A's diffraction ring.  No Gaia data for B.  SOC grade 5 orbit, 616-year period.

02h 47m 03.60s +35° 33' 17.3" P.A. 217.00 sep 0.9 mag 6.42,8.64 Sp F0IV dist. 50.61 pc (165.09 l.y.)

BU   87 AB: 152; 250x: Light orange star, with seeing very faint B appears as a solid point of light just outside of A's diffraction ring.  -9% PRO with 3.5% error, 981 AU WS, 6.6+3.1 Msol, it is not likely to be binary. Burnham noted the color as "A fine colored pair, J gives golden:blue" but also "the components are evidentially fixed" 

04h 22m 22.74s +20° 49' 16.4" P.A. 168.00 sep 1.9 mag 6.21,8.60 Sp B3V+K3II dist. 714.29 pc (2330.01 l.y.)

BU  310 AB: 152; 200x: Wide B seen with averted vision.  -21% PRO, it is not binary.  Burnham himself called it "fixed."

04h 22m 00.26s +39° 56' 03.3" P.A. 173.00 sep 18.9 mag 7.10,12.62 Sp F8 dist. 54.56 pc (177.97 l.y.)

BU  533 AB: 152; 250x: Just split with 250x, slightly unequal. -12% PRO 1% error, 103 AU WS, 1.6+1.7 Msol, it is not likely binary -- in spite of the SOC grade 4 orbit of 463-years.

03h 35m 37.81s +31° 40' 48.7" P.A. 221.00 sep 1.0 mag 7.55,7.74 Sp F4V dist. 85.98 pc (280.47 l.y.)

BU  535 AB: 152; 250x: Difficult, with seeing, a solid form steady on A's diffraction ring, high power only. No Gaia data for B.  

03h 44m 19.13s +32° 17' 17.7" P.A. 21.00 sep 1.0 mag 3.91,6.70 Sp B1III dist. 343.64 pc (1120.95 l.y.)

BU  547 AB: 152; 250x: At best moments of seeing only, light yellow-orange A and B at A's diffraction ring.  No Gaia data for B.  It would be worth to try an orbit.

04h 13m 56.39s +09° 15' 50.0" P.A. 339.00 sep 1.3 mag 5.05,7.32 Sp G5IV+A8V dist. 101.73 pc (331.84 l.y.)

BU  548 AB: 152; 200x: Wide B with averted vision only.  -1% PRO with 0.5% error, 1,406 AU WS, 2.6+1.0 Msol, RVD 3.5 > EV 2.1, it is not binary.  Burnham noted "No material change."

04h 16m 35.98s -10° 05' 08.8" P.A. 345.00 sep 6.2 mag 7.50,11.39 Sp A3III dist. 254.45 pc (830.02 l.y.)

ES  558 AB: 152; 150x: Faint B well separated.  -20% PRO, it is not binary.

03h 06m 47.76s +45° 45' 02.8" sep 8.4 mag 7.65,10.62 Sp B9 dist. 170.36 pc (555.71 l.y.)

HU  544 AB: 152; 250x: Exquisite light blue stars, closely separated at 150x, best seen 250x, almost 2 Dm.  Really pretty.  -49% PRO, it is not binary!  In spite of SOC grade 5 orbit.

03h 15m 48.70s +50° 57' 21.2" P.A. 103.00 sep 1.7 mag 6.72,8.20 Sp A0 dist. 134.95 pc (440.21 l.y.)

KUI  15 AB: 152; 250x: Excellent close pair, hairline split, unequal.  No Gaia parallax data for B.  SOC grade 4 orbit, 871-year period.

03h 52m 00.23s +06° 32' 05.6" P.A. 206.00 sep 0.8 mag 6.26,6.56 Sp B5V dist. 238.66 pc (778.51 l.y.)

LDS5535 AB: 152; 125x: Super-wide, 4 Dm.  -90% PRO, it is not binary. 

04h 17m 15.69s +20° 34' 43.5" P.A. 299.00 sep 180.7 mag 4.95,9.63 Sp A3 dist. 28.94 pc (94.4 l.y.)

STF 301 AB: 152; 150x: Easy, wide, 1 Dm, also seen with the 60-mm scope and 40x. -30% PRO, it is not binary.

02h 47m 38.75s +53° 56' 35.8" P.A. 17.00 sep 8.2 mag 7.85,8.70 Sp A0 dist. 990.1 pc (3229.71 l.y.)

STF 307 AB: 152; 150x: The primary is a beautiful light orange color, with many stars around, including wide 4 Dm B.  AC also seen with averted version at first but can then hold, more than twice as wide but with a similar PA.  AB -4% PRO but with 5.7% error, but weighted separation is 8,180 AU, likely too far even with the 8.2+2.3 Msol.  AC do not share parallax at all. 

02h 50m 41.81s +55° 53' 43.8" P.A. 301.00 sep 28.7 mag 3.76,8.50 Sp M3I+B9V dist. 269.54 pc (879.24 l.y.)

STF 336 AB: 152; 150x: Light yellow A and wide blue B, closely separated at low power. -35% PRO, it is not binary.

03h 01m 29.07s +32° 24' 45.8" P.A. 8.00 sep 8.7 mag 6.96,8.27 Sp G5IV dist. 168.07 pc (548.24 l.y.)

STF 337 AB: 152; 150x: Unequal wide.  81% PRO, 1,110 AU WS, 1.3+0.8 Msol, and RVD 1.5 < EV 1.8, it is likely binary and needs an orbit.

03h 02m 16.79s +41° 23' 45.7" P.A. 163.00 sep 17.6 mag 7.99,9.34 Sp F5 dist. 47.8 pc (155.92 l.y.)

STF 352 AB: 152; 150x: 2 Dm, well separated.  64% PRO, 514 AU WS, 1.9+1.1 Msol, and RVD 1.6 < EV 3.2, it is likely binary and needs an orbit.

03h 08m 45.91s +35° 27' 31.1" sep 3.9 mag 7.80,9.65 Sp A0 dist. 155.52 pc (507.31 l.y.)

STF 360 AB: 152; 150x: Lovely closely split 1 Dm white stars, with low power.  -9% PRO with 2.5% error, 130 AU WS, 1.1+1.0 Msol, RVD 0.0 < EV 5.4.  SOC grade 4 orbit 1500-year period -- only time will tell whether it bears out being binary, but chances are reduced given the parallax.

03h 12m 09.59s +37° 13' 03.3" P.A. 124.00 sep 3.0 mag 8.02,8.29 Sp G0 dist. 39.92 pc (130.22 l.y.)

STF 375 AB: 200x: Close, but still easy split with 150x, better seen 200x, 2 Dm.  -34% PRO, it is not binary.  AC and AB-D do not share parallax and are not binary either.

03h 20m 21.23s +23° 41' 21.9" P.A. 316.00 sep 2.7 mag 7.62,9.90 Sp A7IV dist. 104.6 pc (341.21 l.y.)

STF 376 AB: 152; 150x: Equal wide.  62% PRO, 1,485 AU WS, and RVD 0.0 < EV 2.2, it is likely binary and needs an orbit.

03h 20m 20.64s +19° 43' 49.3" P.A. 251.00 sep 7.2 mag 8.33,8.44 Sp A2V dist. 123.15 pc (401.72 l.y.)

STF 381 AB: 152; 250x: 2 Dm very closely split, seen with low power but best with 250x.  No Gaia data for the secondary, but because the primary is roughly 554 light years distant, it is unlikely it is binary.

03h 23m 19.33s +20° 58' 13.9" P.A. 109.00 sep 1.1 mag 7.56,8.75 Sp G5

STF 408 AB: 152; 250x: Near equal, just barely split with 250x.  No Gaia parallax for the secondary.  The primary is roughly 396 light years distant, so it is possible to be binary, and an orbit should be tried.

03h 30m 39.31s -04° 16' 23.5" P.A. 320.00 sep 1.1 mag 8.23,8.41 Sp A3 dist. 113.12 pc (369 l.y.)

STF 422 AB: 152; 150x: Light yellow stars, 2 Dm, well separated.  -23% PRO, it is not binary, in spite of the SOC grade 4 orbit 1210-year period.

03h 36m 47.30s +00° 35' 15.9" P.A. 273.00 sep 6.7 mag 6.00,8.90 Sp G8V+K6 dist. 30.68 pc (100.08 l.y.)

STF 427 AB: 152; 150x: Unequal, wide, white.  -61% PRO, it is not binary.

03h 40m 38.77s +28° 46' 24.0" P.A. 207.00 sep 7.0 mag 7.41,7.84 Sp A1V+A2V dist. 113.12 pc (369 l.y.)

STF 435 AB: 152; 150x: 2 Dm, wide.  0% PRO, it is not binary.

03h 43m 06.52s +25° 40' 52.9" P.A. 3.00 sep 13.2 mag 7.20,8.87 Sp F3V

STF 444 AB: 152; 150x: 3 Dm, well split, unequal.  68% PRO, 485 AU WS, 2.3+1.1 Msol, and RVD 2.5 < EV 3.5, it is likely binary and needs an orbit.

03h 45m 48.82s +23° 08' 49.7" P.A. 338.00 sep 3.4 mag 6.91,10.09 Sp A0V dist. 121.36 pc (395.88 l.y.)

STF 460 AB: 152; 250x: Strongly notched snowman, 1 Dm, illusion of hairline split but I think it's just the appearance of two photocenters.  No Gaia data.  SOC grade 3 orbit 372-year period, nearly circular, little change in the next 25 years.  Current separation 0.662", below my resolution limit.

04h 10m 02.74s +80° 41' 55.2" P.A. 154.00 sep 0.662 mag 5.62,6.32 Sp G8III+A4V dist. 116.41 pc (379.73 l.y.)

STF 469 AB: 152; 150x: Well separated, 3 Dm, white.  68% PRO, 1,133 AU WS, 2.2+1.1 Msol, but RVD 2.4 > EV 2.3.  It just might be binary, an orbit should be tried.

03h 57m 16.29s +41° 52' 50.3" P.A. 146.00 sep 9.1 mag 6.90,9.92 Sp A2 dist. 121.07 pc (394.93 l.y.)

STF 470 AB: 152; 200x: Gorgeous colors, light orange A and light blue B, 1 Dm, wide. Pretty at all powers.  0% PRO, it isn't binary.

03h 54m 17.49s -02° 57' 17.0" P.A. 349.00 sep 6.9 mag 4.80,5.89 Sp G8III+A2V dist. 95.97 pc (313.05 l.y.)

STF 471 AB: 152; 150x: Very bright A, well separated 5 Dm B.  -10% PRO with 8% error, it is not binary.

03h 57m 51.22s +40° 00' 36.9" P.A. 12.00 sep 8.8 mag 2.85,8.88 Sp B0.5V+A2V dist. 195.69 pc (638.34 l.y.)

STF 483 AB: 152; 250x: Very closely split, 2 Dm. -46% PRO, it is not binary.

04h 04m 07.10s +39° 30' 35.0" P.A. 53.00 sep 1.6 mag 7.38,9.35 Sp G5 dist. 32.36 pc (105.56 l.y.)

STF 494 AB: 152; 150x: Equal white stars, well separated.  52% PRO, 595 AU WS, 1.8+1.8 Msol, and RVD 0.1 < EV 3.3, it is certainly binary and needs an orbit.

04h 08m 53.50s +23° 05' 55.1" P.A. 187.00 sep 5.5 mag 7.53,7.65 Sp A8IV+A8IV dist. 104.71 pc (341.56 l.y.)

STF 495 AB: 152; 150x: Well split, 2 Dm.  -54% PRO, it is not binary.

04h 07m 41.98s +15° 09' 46.1" P.A. 222.00 sep 3.6 mag 6.11,8.77 Sp F3V dist. 43.63 pc (142.32 l.y.)

STF 510 AB: 152; 150x: Well separated, 3 Dm. -72% PRO, it is not binary.

04h 12m 09.28s +00° 44' 08.1" P.A. 303.00 sep 10.4 mag 6.67,10.05 Sp G8III dist. 145.56 pc (474.82 l.y.)

STF 516 AB: 152: 150x: Pretty light orange A and 3 Dm blue B, well separated.  11% PRO, 450 AU WS, 2.8+1.1 Msol, but RVD 4.2 > EV 3.9, it is not binary.

04h 14m 23.69s -10° 15' 21.2" P.A. 143.00 sep 6.4 mag 5.03,8.53 Sp K2III dist. 74.29 pc (242.33 l.y.)

STF 517 AB: 152; 150x: 2 Dm, well separated.  -16% PRO, it is not binary.

04h 16m 01.44s +00° 27' 13.9" P.A. 7.00 sep 3.2 mag 7.39,9.26 Sp A1V dist. 116.69 pc (380.64 l.y.)

STF 518 BC: 152; 200x: A is light orange, with a widely separated B.  But BC is the prize, more closely split, both faint, C appears best with averted vision.  -27% PRO, it is not binary, though there is a SOC grade 3 orbit 233-year period.  More time is needed for this one to sort out.

04h 15m 21.79s -07° 39' 29.1" P.A. 330.00 sep 8.2 mag 9.53,11.17 Sp DA2.9+M5V

STF 521 AB: 152; 200x: Pale white stars, 1 Dm, easy split.  -34% PRO, it is not split.

04h 21m 45.39s +50° 02' 06.5" P.A. 257.00 sep 2.1 mag 7.44,9.17 Sp G0 dist. 813.01 pc (2652.04 l.y.)

STF 531 AB: 152; 250x: Difficult with this aperture, <1" split, significant delta.  Just split at best moments of seeing.  87% PRO, 160 AU WS, 2.2+1.7 Msol, it is likely binary.  SOC grade 5 orbit, 1107-year period.  

04h 26m 46.23s +55° 38' 37.6" P.A. 325.00 sep 1.0 mag 7.69,8.76 Sp F4IV dist. 158.73 pc (517.78 l.y.)

STF 533 AB: 152; 150x: Very wide, 1 Dm, ordinary.  0% PRO with 3.2% error, and with 4,242 AU WS, 2.6+2.0 Msol, it is not likely binary.

04h 24m 24.85s +34° 18' 53.1" P.A. 62.00 sep 19.0 mag 7.30,8.49 Sp B8V dist. 221.73 pc (723.28 l.y.)

STF 534 AB: 152; 150x: Very wide, nearly 2 Dm, ordinary.  26% PRO, 6,153 AU WS, 3.3+2.2 Msol, it is possible to be binary and an orbit should be tried.

04h 23m 59.76s +24° 18' 03.7" P.A. 291.00 sep 29.1 mag 6.36,7.94 Sp B3V+A1V dist. 278.55 pc (908.63 l.y.)

STF 535 AB: 152; 250x: Exceptionally close split, light blue stars, 1 Dm, with high power and best seeing.  No Gaia data for the secondary.  SOC grade 4 orbit, 532-year period.

04h 23m 16.84s +11° 22' 40.5" P.A. 267.00 sep 1.1 mag 6.95,8.29 Sp A5III dist. 87.26 pc (284.64 l.y.)

STF 536 AB: 152; 200x: Unequal, closely separated.  -70% PRO, it is not binary.

04h 22m 10.21s -04° 40' 37.4" P.A. 193.00 sep 1.6 mag 7.94,8.73 Sp A7IV dist. 142.05 pc (463.37 l.y.)

STF 545 AB: 152; 150x: Wide, white, 2 Dm.  -65% PRO, it is not binary.

04h 27m 04.85s +18° 12' 27.1" P.A. 58.00 sep 19.0 mag 6.92,8.78 Sp A0V dist. 106.5 pc (347.4 l.y.)

STF 546 AB: 152; 150x: Unequal, well split.  30% PRO, 440 AU WS, 1.3+0.9 Msol, and RVD 1.5 < EV 3.0, it is likely binary and needs an orbit.

04h 27m 00.62s +19° 07' 03.6" P.A. 182.00 sep 7.0 mag 7.94,9.21 Sp G0 dist. 65.02 pc (212.1 l.y.)

STF3114 AB: 152; 150x: 2 Dm, nice close split. 47% PRO, 208 AU WS, 1.4+0.8, it is likely binary and needs an orbit.

04h 09m 10.26s +40° 09' 40.5" P.A. 157.00 sep 3.1 mag 7.71,9.59 Sp F8V dist. 61.35 pc (200.12 l.y.)

STT  44 AB: 152; 250x: Very close split 1 Dm, in the middle of M34. -5% PRO with 2.2% error, not likely binary.

02h 42m 13.13s +42° 41' 57.2" P.A. 56.00 sep 1.4 mag 8.46,8.96 Sp B9Vp dist. 248.14 pc (809.43 l.y.)

STT  46 AB: 152; 250x: Faint, close companion is cleanly split, perfect star images with high power.  25% PRO, 302 AU WS, and RVD 3.2 < EV 3.7, it is likely binary and needs an orbit.

02h 50m 00.31s +30° 31' 34.8" P.A. 75.00 sep 4.8 mag 6.78,10.79 Sp F0 dist. 62.42 pc (203.61 l.y.)

STT  64 AB: 152; 250x: Nice close split, 3 Dm.  C is nearly the same position angle and magnitude as B, but three times as widely separated.  AB 47% PRO, 447 AU WS, 2.3+1.1 Msol, likely binary and needs an orbit.  C has a similar parallax but not overlapping with A or B. 

03h 49m 58.06s +23° 50' 55.3" P.A. 234.00 sep 3.3 mag 6.81,10.15 Sp B9.5Vp dist. 146.84 pc (478.99 l.y.)

STT  69 AB: 152; 200x: 2 Dm, very closely split, B sits on A's diffraction ring.  -67% PRO, it is not binary.

03h 59m 39.97s +38° 49' 13.4" P.A. 323.00 sep 1.4 mag 6.60,9.13 Sp A1Vp: dist. 193.8 pc (632.18 l.y.)

STT  72 AB: 152; 150x: Light orange stars, well separated, >3 Dm.  18% PRO, 638 AU WS, 3.3+1.2 Msol, there is some possibility it is binary, an orbit should be tried.

04h 07m 59.42s +17° 20' 23.6" P.A. 327.00 sep 4.8 mag 6.10,9.71 Sp K5IIIb dist. 123.15 pc (401.72 l.y.)

STT  73 AB: 152; 150x: Light orange A, faint wide B.  -18% PRO, it is not binary.

04h 14m 53.86s +48° 24' 33.5" P.A. 349.00 sep 15.0 mag 4.24,10.28 Sp G0Ib dist. 276.24 pc (901.09 l.y.)

STT  81 AB: 152; 150x: Close split with low power, 1 Dm.  -57% PRO, it is not binary.

04h 24m 37.46s +33° 57' 34.9" P.A. 13.00 sep 4.2 mag 5.84,9.25 Sp F4V dist. 40.62 pc (132.5 l.y.)

STT  82 AB: 152; 250x: Very closely split, 1 Dm.  -38% PRO, it is not binary -- interesting there is a SOC grade 3 orbit, 247-year period.

04h 22m 44.10s +15° 03' 22.1" P.A. 323.00 sep 1.2 mag 7.31,8.63 Sp F9V dist. 43.63 pc (142.32 l.y.)

STT 531 AB: 152; 250x: Well separated at higher powers, 2 Dm.  No Gaia parallax data.  SOC grade 5 orbit, 590-year period, so it's anyone's guess.

04h 07m 34.35s +38° 04' 28.3" P.A. 353.00 sep 2.7 mag 7.32,9.69 Sp K1V dist. 20.38 pc (66.48 l.y.)