29 june 2021

Over the last several weeks I've been able to finally mount my 6-inch f/15 refractor. I've been able to use it several times for solar viewing, white light with a Herschel wedge, and prominences with a Quark (both of which are really great). Last night was the first dark sky time with the new mounting. Seeing started off poor but did improve, and there was a high thin haze. Very good session overall. I'm still learning how to drive the telescope and learn its quirks. There is some shakiness in it still, which surprises me, so I need to figure out if it's the mount, tripod, or just the long focal length tube.

STF 2084 AB: 156; 285x: Zeta Her. A lot of diffraction but there is a persistent bulge, brightening to a split, at the first diffraction ring. Suspected at 175x. I would not call this a successful split, it was too messy.
16h 41m 17.16s +31° 36' 09.8" P.A. 105.20 sep 1.4 mag 2.95,5.40 Sp G1IV dist. 10.72 pc (34.97 l.y.)

STF 2101 AB: 156; 175x: Fine white pair, 1 delta mag, well separated B
16h 45m 48.14s +35° 37' 50.5" P.A. 48.00 sep 4.1 mag 7.51,9.39 Sp F6V dist. 58.82 pc (191.87 l.y.)

STF 2104 AB: 156; 175x: White pair, 1 delta mag, wide 

16h 48m 41.48s +35° 55' 19.3" P.A. 18.00 sep 5.7 mag 7.49,8.78 Sp F2 dist. 172.71 pc (563.38 l.y.)

STF 2161 AB: 156; 175x: Rho Her.  Lovely cream-white stars, half delta mag, nice split 

17h 23m 40.97s +37° 08' 45.3" P.A. 321.00 sep 4.1 mag 4.50,5.40 Sp B9.5III dist. 120.63 pc (393.5 l.y.)

STT 329 AB: 156; 175x: Wide white and orange stars, 1.5 delta

17h 24m 27.11s +36° 57' 06.9" P.A. 12.00 sep 33.5 mag 6.35,9.88 Sp G5III+F0V dist. 230.41 pc (751.6 l.y.)

STF 2107 AB: 156; 175x: ! Extremely fine hairline split with seeing, 1.5 delta mag white stars.  Obvious split with 285x.  Physical with a 274 year orbit, now at apastron.  1.1" at discovery in 1828.

16h 51m 50.10s +28° 39' 58.7" P.A. 106.40 sep 1.4 mag 6.90,8.50 Sp F5IV dist. 58.41 pc (190.53 l.y.)

STF 2095 AB: 156; 175x: Rather wide, 1 delta mag stars, yellow color A.

16h 45m 05.23s +28° 21' 28.9" P.A. 160.00 sep 5.3 mag 7.36,9.16 Sp F7III dist. 215.98 pc (704.53 l.y.)

NGC 6210: Oval shape with a slight bulge on one side, light green-grey color, thicker around the outer edge though edge itself is slightly diffuse, brightens when blinking it, 

STF 2094 AB: 156; 285x: Snowman at 175x, hairline split at 285x.  Noticed wide faint C (11.70 mag) at 285x.   

16h 44m 10.57s +23° 31' 02.8" P.A. 76.00 sep 1.0 mag 7.48,7.87 Sp F5III dist. 156.49 pc (510.47 l.y.)

STF 2079 AB: 156; 175x: Wide, white, near equal.

16h 39m 36.33s +23° 00' 06.1" P.A. 91.00 sep 16.7 mag 7.56,8.13 Sp F0 dist. 414.94 pc (1353.53 l.y.)

STF 2085 AB: 156; 175x: 2 delta mag, pretty wide.

16h 42m 26.09s +21° 35' 34.3" P.A. 310.00 sep 6.0 mag 7.38,9.17 Sp A0IV dist. 190.48 pc (621.35 l.y.)

STF 2109 AB: 156; 175x: Wide, faint, near orange star.

16h 53m 45.78s +21° 10' 22.6" P.A. 312.00 sep 5.9 mag 7.52,10.30 Sp K0 dist. 188.68 pc (615.47 l.y.)

PRY 2 AB: 156; 175x: ! Wow!  3 delta mag B star just outside blue-green A's diffraction ring.  Seen at both 175x and 285x.  J.J.M. Perry.  Uncertain in WDS, but from the Gaia EDR3 data I find a 23% parallax overlap, 2030 AU weighted distance, with the primary star 3.31 primary star solar mass vs 1.61 for the secondary -- so it should bind at 2030 AU -- so it is likely gravitationally bound.  Gaia lacks the radial velocity otherwise I could confirm it.

17h 04m 41.34s +19° 35' 56.7" P.A. 227.00 sep 1.8 mag 6.19,9.29 Sp A0IV dist. 176.68 pc (576.33 l.y.)

BU 130 AB: 156; 285x: 90 Her.  Orange star with one part of the airy disk persistently brighter but which does not resolve to a disk.  Tried up to 380x.  The slightly brighter primary made this more difficult than PRY 2.  This was one I wanted to try since Burnham discovered it with his 6-inch.  He writes: 90 Her.  "…a beautiful pair, even with small aperture.  The components have a striking difference in color -- golden and blue….[due to common proper motion] there is little doubt of its being a physical system."  WDS uncertain after 49 measures.  Unfortunately Gaia lacks the parallax measurements for the B star.

17h 53m 18.03s +40° 00' 28.6" P.A. 110.00 sep 1.6 mag 5.28,8.76 Sp K3III dist. 108.46 pc (353.8 l.y.)

STF 2282 AB: 156; 175x: White stars, 1 delta mag, good separation

18h 06m 30.47s +40° 21' 39.6" P.A. 83.00 sep 2.7 mag 7.93,9.43 Sp A1V dist. 512.82 pc (1672.82 l.y.)

BU 1127 AB: 156; 175x: Notched elongation at all powers. 

18h 02m 30.89s +44° 14' 02.6" P.A. 39.00 sep 0.7 mag 7.31,9.20 Sp F5V dist. 81.3 pc (265.2 l.y.)

STF 2129 AB: 156; 175x: Wide and 2 delta mag B.  Not physical.

17h 08m 51.86s +69° 25' 10.4" P.A. 206.00 sep 9.8 mag 9.99,10.61 Sp G5

OP Her: Nice light orange

mons pico flash

 The night of the 18th seeing was ok but there was a bit of a veil of marine haze.  I had a look at the moon at 205x, checking out the terminator, when I noticed three areas with very bright reflections.  One small and bight point was so intense I was able to perform a star test!  The other two were larger, one with three progressively smaller disks in a small arc, and the other with two shards of light like broken glass.

These were all reflections of mountain tops during the lunar dawn.  They were very dramatic because they were so intensely bright.  The three disks were Mons Pico Beta, the shards Mons Pico itself, and as best as I can tell, the little point of light was a peak near crater Mouchez.  I tried to capture it with a celphone snap.

15 june 2021

Finally, after a couple weeks of skies ruined by marine layer or wind, I had the chance to observe last night.  Seeing was good enough to use full aperture, but not perfect, so I used an apodising mask throughout.  I couldn't go down to the limits of the scope, but I was able to see come compelling pairs.  Transparency was softened by some marine haze.

Planes on approach to Oakland really wreck havoc on my seeing.  Just like a disturbance in a pool, it takes several minutes for their wake to settle out of the air.  I remember watching a line of plane wake slide over the face of the moon, with creases on either end diffract as they moved along either edge until they rejoined on the other side.  So I try to point away from the main flight path, but there's still disturbance.  Unfortunately the flight path is near zenith and the best part of the sky for viewing.  One just needs patience.  When one is coming I do my best to concentrate on the star; when it arrives I take a slight break, or maybe change eyepieces.

I would have observed longer, but the seeing seemed to deteriorate.  There should be some more good weather coming.

A 2065 AB: 508; 205x: Very fine pair, white A, 2 delta, very close but nice split.  WDS lists as uncertain but the EDR3 data show there is no parallax overlap (by a lot), so these are a comoving but not gravitationally bound pair.
14h 08m 19.11s +16° 43' 32.9" P.A. 342.00 sep 1.6 mag 9.52,11.13 Sp F5 dist. 152.21 pc (496.51 l.y.)

A 1098 AB: 508; 205x: Very light yellow-orange A, 2 delta, well separated B.  Not physical (no parallax overlap and proper motions are divergent).
14h 09m 49.14s +08° 22' 04.9" P.A. 282.00 sep 3.8 mag 9.20,11.20 Sp K0

HDS1989 Aa-Ab: 508; 1067x: Light orange, not round at all powers, it is misshapen with a small lump on one side, disks will not resolve.  EDR3 does not show any such close companion!  Maybe my "not round" is confirmation bias?
14h 10m 55.76s +15° 12' 55.7" P.A. 335.00 sep 0.4 mag 8.53,10.86 Sp G0 dist. 60.46 pc (197.22 l.y.)

A 1100 AB: 508; 533x: Subtle notched elongation.  EDR3 does not show any close companion.
14h 13m 50.60s +08° 58' 51.1" P.A. 173.00 sep 0.2 mag 8.40,9.30 Sp A5

HEI 530 AB: 508; 533x: Very brief split of unequal white stars, with seeing only.  EDR3 does not show any close companion
14h 14m 07.87s +10° 55' 46.7" P.A. 353.00 sep 0.5 mag 9.68,10.23 Sp G5

COU 482 AB: 508; 445x: ! Excellent white pair, brief splits with seeing at 205x, easy steady split with six, slightly unequal.  Uncertain in WDS, and no parallax data in EDR3
14h 21m 20.69s +30° 50' 07.1" P.A. 121.00 sep 0.6 mag 9.92,9.98 Sp G0

AGC 6 AB: 508; 445x: Small scale split with 205x, easy split with 445x.   Near Arcturus, so in wide field it looks like debris from the bright star.  No parallax data for the A star in EDR3
14h 33m 55.72s +29° 49' 19.1" P.A. 133.00 sep 0.8 mag 9.81,10.30 Sp G0III

A 347 AB: 508; 445x: Near equal white stars, suspected double at 205x, easy split at 445x.  Binary with 236.4-year period.
14h 36m 56.24s +48° 13' 17.9" P.A. 232.80 sep 0.6 mag 8.68,8.37 Sp F2 dist. 106.04 pc (345.9 l.y.)

STT 283 A-BC: 508; 205x: Faint and slightly reddish B, maybe due to faintness, bright white A, well separated.  HU 57 BC not tried for, 12.62/11.77 1.2".  WDS says A-BC is physical, however there is no parallax overlap -- it's not binary. 
14h 32m 30.86s +49° 11' 02.6" P.A. 130.00 sep 5.9 mag 8.08,12.62 Sp F5 dist. 87.41 pc (285.13 l.y.)

COU1586 AB: 508; 205x: Well seen at 205x, very bright white A and faint B hanging close to it, separated.  WDS says physical and I'd agree, it's s strong possibility of binarity.

14h 33m 44.62s +43° 00' 28.1" P.A. 143.00 sep 1.8 mag 6.82,10.27 Sp A2 dist. 79.62 pc (259.72 l.y.)

 

COU1587 AB: 508; 533x: Elongation at 205x since its faint, more magnification lengthens the elongation but it becomes more of a smear, transparency seems to be hindering resolution.  Uncertain in WDS, unfortunately no parallax data in EDR3.
14h 34m 02.12s +45° 00' 12.2" P.A. 27.00 sep 0.8 mag 11.44,11.68 Sp G0

A 1622 AB: 508; 205x: White A and dull-to-reddish B, well separated around 2" and 2 delta mag.  Uncertain in WDS, and the EDR3 data back that up with good parallax overlap and only 226 AU separation.
14h 40m 30.40s +46° 32' 32.8" P.A. 254.00 sep 1.9 mag 8.86,10.57 Sp G0 dist. 103.41 pc (337.32 l.y.)

HO 59 AB: 508; 205x: Well separated faint B to bright white A.  Not physical
14h 41m 33.22s +44° 22' 40.7" P.A. 9.00 sep 6.8 mag 8.33,11.82 Sp G0 dist. 89.45 pc (291.79 l.y.)

STF1875 AB: 508; 205x: Near equal, well separated white stars.  Uncertain in WDS, and while the proper motions are similar there is no parallax overlap, so these are comoving not binary.
14h 43m 38.57s +37° 44' 58.4" P.A. 128.00 sep 3.1 mag 10.22,10.24 Sp F8 dist. 151.29 pc (493.51 l.y.)

KU 49 AB: 508; 445x: A bit hazy, but suspected elongated at 205x, split with 445x. Faint white stars, near equal, more than 1".  Uncertain in WDS but pretty good parallax overlap
14h 44m 25.17s +41° 24' 11.3" P.A. 206.00 sep 1.6 mag 10.57,11.03

STT 285 AB: 508: 445x: Nicely split white stars, 1 delta mag, noted the PA with drift.  Short period, 88.993-year period, it is at apastron and will hang there for the next decade.
14h 45m 29.74s +42° 22' 56.4" P.A. 74.70 sep 0.5 mag 7.75,8.66 Sp F6V dist. 83.82 pc (273.42 l.y.)

STT 287 AB: 508; 533x: An elongated smear at 205x, split with seeing at 445x, stead split at 533x.  <1", near equal white stars.  Binary with 340-year period, currently tightening to periastron around 2044.
14h 51m 27.53s +44° 55' 42.6" P.A. 4.20 sep 0.7 mag 8.40,8.62 Sp G0 dist. 59.14 pc (192.91 l.y.)

STF1896 AB: 508; 205x: White stars, 1 delta mag, wide.  Stelle Doppie gives AB as physical with a 4.23-year period, and an orbital plot -- but with separations of 0.02-0.04".  Checking the WDS notes, I find: "AB: Radial velocity variations, based on 10 years of monitoring, indicate the presence of a giant planet orbiting the B component, with P = 1544 +/- 34d, a = 2.62 +/- 0.04 au. M sin i = 1.49 +/- 0.09 Mjup.  The primary is an SB in an eccentric orbit with period 25-30 y; mass of Ab 0.5-0.6 Msun. No companions were detected by AO imaging."  So it seems SD is giving the orbit of the giant planet!  Full paper here.

14h 58m 21.57s +44° 02' 35.9" P.A. 276.00 sep 4.1 mag 8.97,9.47 Sp F8 dist. 96.06 pc (313.35 l.y.)

3 june 2021

Once again, the seeing was optimistically forecast, but in reality was poor, even with the 7-inch mask. I changed my observing list to easier, wider pairs and made many observations. But most were wide, likely not physical, and uninteresting, and my descriptions reflected that.  I suppose early observers could be forgiven thinking some of these might be binary, and even 100 years ago with some proper motion data to think so.  But now we have more information and these are just not interesting to observe as binaries, and there's no point to continue to study them.  The WDS needs a major clean-up to establish which are true binaries and dump the rest.  

Summer twilight is in full effect, it seemed it never got dark even when I closed up at 11pm.  Observations not in time order: 

STF1773 AB: 178; 205x: Wide near equal, part of a triple system forming a triangle of near equal stars which are not physical

13h 41m 38.19s +07° 36' 21.3" P.A. 209.00 sep 30.6 mag 9.95,10.00 Sp F7V

STF1791 AB: 178; 205x: Faint, wide, 1 delta.  Not physical
13h 56m 49.22s +14° 25' 58.6" P.A. 159.00 sep 21.0 mag 9.39,10.73 Sp F7V+G1IV

STF1873 AB: 178; 205x: Pretty light orange and blue stars, wide, 1 delta.  Physical in WDS but my calculator shows there is no overlap in the stars' parallax
14h 44m 48.13s +07° 42' 04.0" P.A. 94.00 sep 6.9 mag 7.96,8.35 Sp G5III dist. 232.56 pc (758.61 l.y.)

ENG 51 AB: 178; 205x: Super wide faint companion, not physical.

14h 19m 16.28s +13° 00' 15.5" P.A. 219.00 sep 164.0 mag 5.44,10.84 Sp F5IV dist. 26.1 pc (85.14 l.y.)

STF1782 AB: 178; 205x: Wide 1 delta.  Physical in WDS and my calculator agrees.
13h 45m 06.87s +18° 22' 04.3" P.A. 185.00 sep 30.4 mag 7.98,9.81 Sp F5

S 656 AB: 178; 205x: Wide, white, half delta.  WDS says it's physical but I calculate no parallax overlap and the two are too far apart to be gravitationally bound.
13h 50m 23.51s +21° 16' 35.8" P.A. 209.00 sep 86.2 mag 6.93,7.37 Sp G0 dist. 105.71 pc (344.83 l.y.)

SHJ 169 AB: 178; 205x: Muphrid.  Very wide faint B to bright white A.  Not physical
13h 54m 41.07s +18° 23' 51.8" P.A. 85.00 sep 114.0 mag 2.72,9.99 Sp G0IV dist. 11.4 pc (37.19 l.y.)

BU 1442 AB: 178; 205x: 5 stars in the system, but only 3 are bright enough for me to see with 7-inch, they form an arc (like a jumping dolphin) of near equal stars. WDS says AB are physical and my calculator agrees, which is a surprise given the very wide separation -- they are relatively close stars so appear wide.
14h 25m 43.56s +23° 36' 59.9" P.A. 74.00 sep 45.2 mag 9.87,10.21 Sp M1+M1.5 dist. 16.36 pc (53.37 l.y.)

BGH 50 AB: 178; 205x: Very wide 1 delta mag.  WDS claims physical.  My calculator shows there is no parallax overlap by fractions of parsecs -- with should be enough to exclude them from being physical, but it's close.  This should be listed as uncertain.
14h 04m 45.95s +25° 49' 03.9" P.A. 32.00 sep 97.0 mag 7.00,8.90 Sp F5+K0 dist. 44.01 pc (143.56 l.y.)

STF1850 AB: 178; 205x: Near equal white wide.  WDS claims physical, and their parallax do overlap, however they are separated by 7168 AU, too far than the known 5000 AU limit of known orbital pairs.
14h 28m 33.29s +28° 17' 25.9" P.A. 263.00 sep 25.2 mag 7.11,7.56 Sp A1V+A1V dist. 349.65 pc (1140.56 l.y.)

STF1653 AB: 178; 205x: Wide one delta white pair.  WDS claims physical but there is no parallax overlap.
12h 33m 22.34s +32° 02' 23.4" P.A. 343.00 sep 8.0 mag 9.66,9.67 Sp F3V+F3V dist. 121.8 pc (397.31 l.y.)

STF1646 AB: 178; 205x: Faint, B seen averted vision only, fairly close.  WDS claims physical but there is no parallax overlap, with a 2 parsec gap -- too far to be gravitationally bound.
12h 28m 09.12s +36° 41' 02.1" P.A. 260.00 sep 5.6 mag 10.30,12.90 Sp F5

STF1727 AB: 178; 205x: B is faint but not too hard to pick out, well separated.  Physical, and I agree
13h 09m 52.02s +31° 22' 00.3" P.A. 333.00 sep 7.5 mag 9.81,10.99 Sp G dist. 138.5 pc (451.79 l.y.)

STF1672 AB: 178; 205x: B is quite faint but can see direct, well separated white.  Not physical
12h 42m 39.65s +33° 48' 51.3" P.A. 312.00 sep 4.3 mag 8.92,10.22 Sp F5V dist. 177.62 pc (579.4 l.y.)

STF1739 AB: 178; 205x: Very faint but surprisingly can see B direct, well separated one delta.  WDS lists as uncertain but there is no parallax overlap by a wide margin, so it can be listed as not physical.
13h 22m 33.24s +30° 30' 55.8" P.A. 126.00 sep 14.9 mag 11.05,11.80" P.A. 126.00 sep 14.9 mag 11.05,11.80

STF1854 AB: 178; 205x: White and wide faint B, 3 delta.  WDS claims physical but there is no overlap in their parallax range, with a gap of a fraction of a parsec, still enough to keep them from being gravitationally bound.
14h 29m 49.66s +31° 47' 28.2" P.A. 256.00 sep 26.1 mag 6.05,10.62 Sp A0Vs dist. 110.13 pc (359.24 l.y.)

STT 289 AB: 178; 205x: B seen averted vision only, well separated.  WDS is uncertain but there is a good parallax overlap and they are separated by 503 AU, so it's very likely these are gravitationally bound.

14h 55m 58.63s +32° 18' 00.3" P.A. 109.00 sep 4.8 mag 6.20,11.10 Sp A2V dist. 95.79 pc (312.47 l.y.)

 

STF1624 AB: 178; 205x: 3 delta white and bluish stars, well separated.  WDS uncertain, but no parallax overlap so not likely physical.
12h 16m 42.19s +39° 35' 34.5" P.A. 153.00 sep 5.9 mag 7.28,10.17 Sp A2.5V dist. 108.81 pc (354.94 l.y.)

STF1632 AB: 178; 205x: Light yellow and 3 delta B, wide.  WDS lists physical and I agree.
12h 20m 13.50s +37° 54' 07.7" P.A. 192.00 sep 10.1 mag 6.83,9.98 Sp K0III+F9V dist. 165.29 pc (539.18 l.y.)

STF1638 AB: 178; 205x: Faint pair, considerable delta, wide.  Not physical.
12h 24m 13.24s +43° 03' 37.1" P.A. 282.00 sep 8.3 mag 10.29,10.70 Sp F5

STF1645 AB: 178; 205x: Slight delta, wide, pretty light yellow-white stars.  WDS lists as physical, and I agree
12h 28m 04.45s +44° 47' 39.5" P.A. 156.00 sep 9.8 mag 7.49,8.08 Sp F9V+KV dist. 43.61 pc (142.26 l.y.)

STF1642 AB: 178; 205x: Closely separated 1 delta light yellow stars.  WDS uncertain, and I find there is no overlap in the parallax ranges, with 1 parsec separating the ranges, so these are not physical.
12h 25m 45.00s +44° 44' 04.4" P.A. 180.00 sep 2.5 mag 8.80,9.40 Sp F5 dist. 244.5 pc (797.56 l.y.)

STF1688 AB: 178; 205x: White B and B is very faint, wide, can just hold it direct vision.  Not physical.

12h 53m 35.26s +37° 58' 20.9" P.A. 344.00 sep 14.4 mag 9.24,11.06 Sp G0 dist. 318.47 pc (1038.85 l.y.)

STT 257 AB: 178; 205x: Easy wide one delta.  WDS claims physical but there is no parallax overlap, so these are not gravitationally bound.
12h 56m 44.77s +45° 36' 45.1" P.A. 353.00 sep 12.9 mag 8.53,9.56 Sp F2Vp+F6V dist. 2702.7 pc (8816.21 l.y.)

STF1747 AB: 178; 205x: Wide one delta.  WDS claims physical but there is no parallax overlap
13h 27m 45.73s +47° 45' 32.2" P.A. 345.00 sep 14.9 mag 9.31,10.22 Sp K0 dist. 222.72 pc (726.51 l.y.)

STF1679 AB: 178; 205x: White 1 delta, wide.  WDS is uncertain but there is good parallax overlap and 1183 AU separation, so likely physical.
12h 46m 00.83s +49° 49' 23.0" P.A. 208.00 sep 5.9 mag 9.62,10.01 Sp F6IV dist. 113.64 pc (370.69 l.y.)

STF1758 AB: 178; 205x: 1 delta, well separated.  WDS uncertain but there is definitely no parallax overlap, so these are not physical.
13h 32m 51.51s +49° 08' 24.3" P.A. 290.00 sep 3.4 mag 8.70,8.95 Sp G0 dist. 77.04 pc (251.3 l.y.)

1 june 2021

Transparency was hurt by thin clouds, and seeing was not good enough for full aperture, so spent some time masked to 7-inches. Since twilight lasts so long I observed for a little more than an hour. Hoping for better weather the rest of this week.

STF1680 AB; 178; 205x: B seen with averted vision at first then I could hold it with direct, well separated, faint pair.
12h 49m 12.97s +21° 46' 30.0" P.A. 335.00 sep 2.9 mag 9.40,11.60 Sp G0

STF1707 AB: 178; 205x: B is wide and faint, seen with averted vision at first and held direct after foveal coaxing
13h 01m 14.16s +15° 51' 45.2" P.A. 41.00 sep 8.3 mag 9.70,11.50 Sp G0

STF1759 AB: 178; 205x: Faint and wide B.  Physical per WDS but my calculator shows there's no parallax overlap, 1 AU too far apart. 
13h 33m 44.39s +27° 27' 00.5" P.A. 155.00 sep 10.4 mag 9.87,11.22 Sp G5 dist. 74.4 pc (242.69 l.y.)

RX Boo 178; 205x: One of John Herschel's red stars, which he described as "Vivid red, almost a bright ruby colour, fine."  It appears noticeably orange-red, easily picked out in the field. 

STF1816 AB: 178; 533x: Notched elongation, unequal pair, seeing won't support higher magnification.  Physical with 1340-year period, it is near periastron now and will remain there the rest of my lifetime.
14h 13m 54.63s +29° 06' 19.5" P.A. 101.00 sep 0.3 mag 7.43,7.75 Sp F0+A2 dist. 113.38 pc (369.85 l.y.)

STF1931 AB: 178; 205x: Widely separated white stars.  WDS has as physical and my calculator agrees, though there is no orbit as yet.

15h 18m 41.98s +10° 25' 39.7" P.A. 166.00 sep 13.4 mag 7.20,8.07 Sp F7V+G3V dist. 49.98 pc (163.03 l.y.)

POU3145 AB: 178; 205x: Near equal wide white stars.  WDS lists as physical, and I agree.
13h 37m 02.85s +23° 18' 31.8" P.A. 200.00 sep 5.7 mag 10.06,10.11 Sp F8