Seeing started out good and got better as the night progressed. And the other nice thing about observing from home is when I feel a little hungry at midnight I can go inside for a slice of homemade cherry pie and a glass of milk. And for a little break a 1am I can lay on the hammock for a while and enjoy looking at the summer triangle. Thin clouds started to thicken around 2am, so that's when I turned in, otherwise I would have stayed out with the seeing.
COU 97 AB: 508; 889x: Notched elongation, near equal light orange stars. Spectral class K0, so the color fits. WDS is uncertain as to binarity, and unfortunately Gaia lacks any data on the companion star.
14h 30m 31.59s +20° 55' 15.5" P.A. 244.00 sep 0.3 mag 9.10,9.80 Sp K0
COU 407 AB: 508; 533x: Excellent hairline split at 445x and very steady wide at 533x, equal magnitude stars, very light yellow. Spectral class F8, yellow-white. WDS uncertain of binarity, however it most likely is gravitationally bound: 74% parallax range overlap, only 79 AU separation, 210 parsecs distant from us. No radial velocity data so can't compare it to the escape velocity.
14h 41m 38.29s +27° 47' 19.9" P.A. 113.00 sep 0.4 mag 10.00,10.27 Sp F8
COU 607 AB: 508; 533x: B is quite faint, needed foveal coaxing to bring it forth, and seen only when A forms a steady disk. WDS uncertain of binarity; unfortunately Gaia data shows there is no overlap of the parallax ranges, so it's not a binary.
COU 608 AB: 508; 205x: Very fine, bright white A and grey B are nicely separated, using lower power helped control A's diffraction. WDS uncertain of binarity, however Gaia data shows there is no overlap in the parallax ranges, so this is not physical.
14h 49m 55.05s +31° 59' 41.4" P.A. 202.00 sep 1.7 mag 9.22,11.80 Sp F8
STF1891 AB: 508; 205x: Ice blue white A and slightly orange B, two delta mag, wide. WDS calls this physical on the strength of the proper motion data, however Gaia shows there is no overlap in the parallax range, so it is not gravitationally bound. Also the escape velocity far exceeds the radial velocity delta, so another strike against it.
14h 54m 30.04s +34° 05' 14.7" P.A. 246.00 sep 3.5 mag 8.69,10.07 Sp G0 dist. 90.99 pc (296.81 l.y.)
A 1627 AB: 508; 889x: Elongated at 533x, notched at 889x, stronger notch at 1334x. Light orange A, light blue B, equal magnitude. Currently 0.237", it has a 101.25-year period, seen nearly face in, and is at apastron to the SW and will make a quarter turn toward the W and tighten to <0.15" by 2041. Interestingly Gaia lacks data for these stars, so the orbit must be derived from historical measures only.
14h 55m 46.57s +39° 38' 54.3" P.A. 203.10 sep 0.2 mag 8.80,8.80 Sp F0 dist. 104.82 pc (341.92 l.y.)
STF1895 AB: 508; 205x: Wide white stars, half delta mag, one tip of triangle of slightly fainter stars. WDS says this is physical on the strength of the proper motion data, but Gaia shows there is no overlap in the parallax range, so it is not gravitationally bound.
14h 57m 27.87s +40° 09' 42.2" P.A. 42.00 sep 12.7 mag 8.27,8.88 Sp A9IV dist. 125.63 pc (409.81 l.y.)
BU 612 AB: 508; 1334x: Elongated / bean shape at all powers, my sense of PA is is NE [orbital data show just south of east, so I'm a bit off]. 0.09" currently, it has a 22.46-year period and is coming off periastron, reaching apastron in 2032 at a gettable 0.25". Burnham discovered with the Dearborn 18.5-inch at an easy 0.3" and writes: "It was very soon apparent from the measures that this was a binary system in rapid motion. In the twenty years covered by the measures, the companion has passed over an arc of 175-degrees. Glasenapp…has computed an orbit from which he finds a period of 30.00 years....This represents the observations as well as could be desired, but evidently the arc was too short for any very accurate determination, and even now widely differing apparent orbits will satisfy the observed positions equally. It is probably that the measures of the next ten years will furnish sufficient data for an orbit which shall substantially correct."
13h 39m 34.68s +10° 44' 46.7" P.A. 49.20 sep 0.1 mag 6.35,6.47 Sp F1V dist. 59.99 pc (195.69 l.y.)
MLR 532 AB: 508; 533x: Beautifully split with 533x, very clear, slight delta mag, light orange stars. It's a little challenging at this magnification with the small scale; the stars were elongated at 205x. WDS uncertain of physicality; Gaia shows no parallax overlap, so sadly this is not.
14h 57m 34.23s +20° 40' 31.0" P.A. 230.00 sep 0.6 mag 11.13,11.09
A 1628 AB: 508; 205x: Attractive pair, easy, wide, white A and 2 delta mag B, light yellow stars. Spectral class F5, yellow-white. WDS uncertain, however there is no overlap in the parallax ranges, not physical.
HU 907 AB: 508; 889x: Very subtly notched olive, very tough. WDS says physical but Gaia lacks data on the stars.
COU 97 AB: 508; 889x: Notched elongation, near equal light orange stars. Spectral class K0, so the color fits. WDS is uncertain as to binarity, and unfortunately Gaia lacks any data on the companion star.
14h 30m 31.59s +20° 55' 15.5" P.A. 244.00 sep 0.3 mag 9.10,9.80 Sp K0
COU 407 AB: 508; 533x: Excellent hairline split at 445x and very steady wide at 533x, equal magnitude stars, very light yellow. Spectral class F8, yellow-white. WDS uncertain of binarity, however it most likely is gravitationally bound: 74% parallax range overlap, only 79 AU separation, 210 parsecs distant from us. No radial velocity data so can't compare it to the escape velocity.
14h 41m 38.29s +27° 47' 19.9" P.A. 113.00 sep 0.4 mag 10.00,10.27 Sp F8
COU 607 AB: 508; 533x: B is quite faint, needed foveal coaxing to bring it forth, and seen only when A forms a steady disk. WDS uncertain of binarity; unfortunately Gaia data shows there is no overlap of the parallax ranges, so it's not a binary.
14h 44m 07.70s +31° 37' 59.1" P.A. 315.00 sep 0.7 mag 10.19,10.86 Sp G5
14h 49m 55.05s +31° 59' 41.4" P.A. 202.00 sep 1.7 mag 9.22,11.80 Sp F8
STF1891 AB: 508; 205x: Ice blue white A and slightly orange B, two delta mag, wide. WDS calls this physical on the strength of the proper motion data, however Gaia shows there is no overlap in the parallax range, so it is not gravitationally bound. Also the escape velocity far exceeds the radial velocity delta, so another strike against it.
14h 54m 30.04s +34° 05' 14.7" P.A. 246.00 sep 3.5 mag 8.69,10.07 Sp G0 dist. 90.99 pc (296.81 l.y.)
A 1627 AB: 508; 889x: Elongated at 533x, notched at 889x, stronger notch at 1334x. Light orange A, light blue B, equal magnitude. Currently 0.237", it has a 101.25-year period, seen nearly face in, and is at apastron to the SW and will make a quarter turn toward the W and tighten to <0.15" by 2041. Interestingly Gaia lacks data for these stars, so the orbit must be derived from historical measures only.
14h 55m 46.57s +39° 38' 54.3" P.A. 203.10 sep 0.2 mag 8.80,8.80 Sp F0 dist. 104.82 pc (341.92 l.y.)
STF1895 AB: 508; 205x: Wide white stars, half delta mag, one tip of triangle of slightly fainter stars. WDS says this is physical on the strength of the proper motion data, but Gaia shows there is no overlap in the parallax range, so it is not gravitationally bound.
14h 57m 27.87s +40° 09' 42.2" P.A. 42.00 sep 12.7 mag 8.27,8.88 Sp A9IV dist. 125.63 pc (409.81 l.y.)
BU 612 AB: 508; 1334x: Elongated / bean shape at all powers, my sense of PA is is NE [orbital data show just south of east, so I'm a bit off]. 0.09" currently, it has a 22.46-year period and is coming off periastron, reaching apastron in 2032 at a gettable 0.25". Burnham discovered with the Dearborn 18.5-inch at an easy 0.3" and writes: "It was very soon apparent from the measures that this was a binary system in rapid motion. In the twenty years covered by the measures, the companion has passed over an arc of 175-degrees. Glasenapp…has computed an orbit from which he finds a period of 30.00 years....This represents the observations as well as could be desired, but evidently the arc was too short for any very accurate determination, and even now widely differing apparent orbits will satisfy the observed positions equally. It is probably that the measures of the next ten years will furnish sufficient data for an orbit which shall substantially correct."
13h 39m 34.68s +10° 44' 46.7" P.A. 49.20 sep 0.1 mag 6.35,6.47 Sp F1V dist. 59.99 pc (195.69 l.y.)
MLR 532 AB: 508; 533x: Beautifully split with 533x, very clear, slight delta mag, light orange stars. It's a little challenging at this magnification with the small scale; the stars were elongated at 205x. WDS uncertain of physicality; Gaia shows no parallax overlap, so sadly this is not.
14h 57m 34.23s +20° 40' 31.0" P.A. 230.00 sep 0.6 mag 11.13,11.09
A 1628 AB: 508; 205x: Attractive pair, easy, wide, white A and 2 delta mag B, light yellow stars. Spectral class F5, yellow-white. WDS uncertain, however there is no overlap in the parallax ranges, not physical.
14h 58m 19.14s +41° 05' 34.5" P.A. 97.00 sep 5.1 mag 8.56,11.63 Sp F5 dist. 74.79 pc (243.96 l.y.)
15h 00m 10.00s +21° 28' 48.8" P.A. 302.90 sep 0.2 mag 10.19,10.20 Sp G0 dist. 158.73 pc (517.78 l.y.)
STF1744 D? 508; 889x: Elongation only all powers, PA seems to be NW. I'm not sure what pair I'm looking at, WDS does not show a "D" which SkyTools shows as a close uneven pair.
STF1744 D? 508; 889x: Elongation only all powers, PA seems to be NW. I'm not sure what pair I'm looking at, WDS does not show a "D" which SkyTools shows as a close uneven pair.
BU 355 AB: 508; 1334x: Subtle notch / peanut shape only at all powers, PA on EW line though difficult to tell which is the primary, light orange stars (spectral class K0, yellow-orange). Burnham discovered with his 6-inch at 0.3" in 1876. WDS uncertain of binarity, and unfortunately Gaia only has data for the primary.
16h 07m 59.39s +45° 22' 49.1" P.A. 287.00 sep 0.2 mag 7.45,8.82 Sp K0 dist. 234.74 pc (765.72 l.y.)
BU 130 AB: 178; 445x: 90 Her. Light orange color and bright A, very minute greyish B lies just outside the first diffraction ring. Burnham discovered with his 6-inch and writes: "…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; Gaia lacks data on the secondary.
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.)
BU 1298 AB: 508; 445x: Nicely split, white stars, about 1 delta mag. WDS uncertain, and frustratingly Gaia lacks data on primary. Burnham discovered with the Yerkes 40-inch in 1901 at 0.3" and called it "a close and difficult double."
16h 59m 29.54s +09° 42' 12.3" P.A. 132.00 sep 0.4 mag 8.25,9.56 Sp F0 dist. 281.69 pc (918.87 l.y.)
COU 809 AB: 508; 205x: Excellent fine near equal pair, nicely separated, nice contrast with rich field of brighter stars. WDS uncertain of binarity, but Gaia shows there is no overlap in the parallax ranges. The proper motions are similar so these are comoving but not gravitationally bound.
18h 00m 30.13s +17° 33' 52.7" P.A. 26.00 sep 2.1 mag 11.43,11.62
A 1374 AB: 508; 205x: Very tough, the extraordinarily fine point of the B star appears with seeing. around 3 delta mag from light yellow A. Spectral class G0, yellow. Worth waiting for the seeing on this one. Physical with a 139.53-year period, it is slowly widening and will take another 30 years to reach apastron.
18h 00m 17.93s +21° 53' 47.5" P.A. 29.50 sep 0.5 mag 8.90,10.90 Sp G0
COU 115 AB: 508; 889x: Very fine hairline split, light yellow-orange near equal stars, really nice pair. WDS uncertain, and unfortunately no Gaia data for the primary.
17h 59m 59.33s +24° 48' 39.0" P.A. 113.00 sep 0.3 mag 8.80,8.80 Sp G5
BU 640 AB: 178; 533x: Very much fainter B seen with averted vision and foveal coaxing only, can only hold it briefly. Physical with a 951.7127-year period (to be exact), it is now making a very fast turn around apastron -- though I think the orbital solution is predicting an incorrect position (too close to apastron at this moment) -- unfortunately I did not record the PA so I can't tell if it's on the west or east side of apastron. Will need to re-observe this, since I don't think I'd see 0.2" at 533x (likely around >0.5" given the delta mag).
18h 20m 49.23s +27° 31' 48.3" P.A. 261.00 sep 0.2 mag 7.00,12.00 Sp G1V dist. 28.55 pc (93.13 l.y.)
HO 83 AB: 178; 445x: Pretty difficult, B appears with averted vision only and fades with direct. Much fainter, about 1". Physical with a 1699.9512-year period, it will soon make a turn toward periastron and tighten over the next few decades. Discovered in 1883 at 0.3".
18h 23m 20.34s +27° 31' 24.1" P.A. 114.70 sep 0.8 mag 10.12,10.38 Sp F8
A 244 AB: 508; 533x: Extremely fine, half delta mag white stars, good clean spilt. WDS says they are near equal but Gaia has 9.92/10.77. No Gaia data on the secondary.
16h 07m 59.39s +45° 22' 49.1" P.A. 287.00 sep 0.2 mag 7.45,8.82 Sp K0 dist. 234.74 pc (765.72 l.y.)
BU 130 AB: 178; 445x: 90 Her. Light orange color and bright A, very minute greyish B lies just outside the first diffraction ring. Burnham discovered with his 6-inch and writes: "…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; Gaia lacks data on the secondary.
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.)
BU 1298 AB: 508; 445x: Nicely split, white stars, about 1 delta mag. WDS uncertain, and frustratingly Gaia lacks data on primary. Burnham discovered with the Yerkes 40-inch in 1901 at 0.3" and called it "a close and difficult double."
16h 59m 29.54s +09° 42' 12.3" P.A. 132.00 sep 0.4 mag 8.25,9.56 Sp F0 dist. 281.69 pc (918.87 l.y.)
COU 809 AB: 508; 205x: Excellent fine near equal pair, nicely separated, nice contrast with rich field of brighter stars. WDS uncertain of binarity, but Gaia shows there is no overlap in the parallax ranges. The proper motions are similar so these are comoving but not gravitationally bound.
18h 00m 30.13s +17° 33' 52.7" P.A. 26.00 sep 2.1 mag 11.43,11.62
A 1374 AB: 508; 205x: Very tough, the extraordinarily fine point of the B star appears with seeing. around 3 delta mag from light yellow A. Spectral class G0, yellow. Worth waiting for the seeing on this one. Physical with a 139.53-year period, it is slowly widening and will take another 30 years to reach apastron.
18h 00m 17.93s +21° 53' 47.5" P.A. 29.50 sep 0.5 mag 8.90,10.90 Sp G0
COU 115 AB: 508; 889x: Very fine hairline split, light yellow-orange near equal stars, really nice pair. WDS uncertain, and unfortunately no Gaia data for the primary.
17h 59m 59.33s +24° 48' 39.0" P.A. 113.00 sep 0.3 mag 8.80,8.80 Sp G5
BU 640 AB: 178; 533x: Very much fainter B seen with averted vision and foveal coaxing only, can only hold it briefly. Physical with a 951.7127-year period (to be exact), it is now making a very fast turn around apastron -- though I think the orbital solution is predicting an incorrect position (too close to apastron at this moment) -- unfortunately I did not record the PA so I can't tell if it's on the west or east side of apastron. Will need to re-observe this, since I don't think I'd see 0.2" at 533x (likely around >0.5" given the delta mag).
18h 20m 49.23s +27° 31' 48.3" P.A. 261.00 sep 0.2 mag 7.00,12.00 Sp G1V dist. 28.55 pc (93.13 l.y.)
18h 23m 20.34s +27° 31' 24.1" P.A. 114.70 sep 0.8 mag 10.12,10.38 Sp F8
A 244 AB: 508; 533x: Extremely fine, half delta mag white stars, good clean spilt. WDS says they are near equal but Gaia has 9.92/10.77. No Gaia data on the secondary.
18h 24m 09.99s +28° 18' 21.4" P.A. 268.00 sep 0.6 mag 10.47,10.48 Sp G0
STF2339 AB,CD 178; 205x: Very pretty close >1 delta mag pair. I need to re-observe! AB is 7.74/8.91 0.2", and CD is 9.3/9.56 0.5", a double-double!
18h 33m 45.62s +17° 43' 55.9" P.A. 92.50 sep 0.2 mag 7.74,8.91 Sp F6V dist. 183.49 pc (598.54 l.y.)
COU 808 AB: 508; 445x: Very faint B <1", 2 delta mag but fainter since it's so close to A. WDS uncertain, but no parallax range overlap.
17h 58m 51.90s +26° 19' 38.9" P.A. 155.00 sep 1.0 mag 9.30,11.40 Sp F8
GCB 30 AB: 508; 205x: A little more than 1 delta mag, well separated white stars. No parallax range overlap.
18h 04m 01.86s +16° 12' 15.0" P.A. 155.00 sep 0.9 mag 12.00,12.50
A 2093 AB: 508; 533x: White stars, nicely split, >1 delta mag. No parallax range overlap.
18h 05m 25.74s +16° 23' 42.3" P.A. 231.00 sep 0.6 mag 9.09,9.85 Sp A0 dist. 313.48 pc (1022.57 l.y.)
COU 417 AB: 508; 205x: Very finely split pair at this magnification and small scale, slight mag difference, small faint pair vs other brighter stars in the field. WDS uncertain, but Gaia data show 25% parallax range overlap and only 543 AU separation, so it's likely this is gravitationally bound.
18h 06m 47.23s +23° 25' 52.2" P.A. 91.00 sep 1.5 mag 11.27,11.41 Sp G0
STF2339 AB,CD 178; 205x: Very pretty close >1 delta mag pair. I need to re-observe! AB is 7.74/8.91 0.2", and CD is 9.3/9.56 0.5", a double-double!
18h 33m 45.62s +17° 43' 55.9" P.A. 92.50 sep 0.2 mag 7.74,8.91 Sp F6V dist. 183.49 pc (598.54 l.y.)
COU 808 AB: 508; 445x: Very faint B <1", 2 delta mag but fainter since it's so close to A. WDS uncertain, but no parallax range overlap.
17h 58m 51.90s +26° 19' 38.9" P.A. 155.00 sep 1.0 mag 9.30,11.40 Sp F8
GCB 30 AB: 508; 205x: A little more than 1 delta mag, well separated white stars. No parallax range overlap.
18h 04m 01.86s +16° 12' 15.0" P.A. 155.00 sep 0.9 mag 12.00,12.50
A 2093 AB: 508; 533x: White stars, nicely split, >1 delta mag. No parallax range overlap.
18h 05m 25.74s +16° 23' 42.3" P.A. 231.00 sep 0.6 mag 9.09,9.85 Sp A0 dist. 313.48 pc (1022.57 l.y.)
COU 417 AB: 508; 205x: Very finely split pair at this magnification and small scale, slight mag difference, small faint pair vs other brighter stars in the field. WDS uncertain, but Gaia data show 25% parallax range overlap and only 543 AU separation, so it's likely this is gravitationally bound.
18h 06m 47.23s +23° 25' 52.2" P.A. 91.00 sep 1.5 mag 11.27,11.41 Sp G0
COU 504 AB: 508; 205x: Very near equal pair, well split, a fine close pair in a bright star field. Good parallax range overlap, only 713 AU separation, so very likely gravitationally bound.
18h 08m 51.57s +24° 32' 48.8" P.A. 76.00 sep 2.1 mag 11.17,11.69
HU 316 AB: 508; 205x: Nice 1 delta, well split, white and dull white stars. WDS is uncertain but the Gaia data show good parallax range overlap, a very close 336 AU separation, BUT the escape velocity exceeds the radial velocity delta, so it is not (or will not be for long) gravitationally bound.
18h 10m 19.94s +18° 16' 33.4" P.A. 157.00 sep 1.8 mag 10.03,11.02 Sp K0
A 238 AB: 508; 667x: Extraordinary pair. With critical focus it pops into view with clear airy disks, nicely split light yellow orange A and blue B. Seeing is steady for around 7 seconds before fuzzing out for longer stretches. WDS uncertain, and Gaia lacks data for the secondary.
18h 11m 20.99s +25° 19' 18.6" P.A. 68.00 sep 0.6 mag 8.59,9.55 Sp G0IV dist. 534.76 pc (1744.39 l.y.)
COU1006 AB: 508; 667x: B is very much fainter and can only be seen when A is perfectly still and round, with seeing. My PA is off, I have NNE and it's WNW. Fairly well separated about 0.5", can tell PA with drift. Physical with 119.2-year period, it is coming off periastron and slowly widening.
18h 12m 58.00s +33° 17' 53.9" P.A. 269.50 sep 0.4 mag 9.23,11.29 Sp G0 dist. 69.44 pc (226.51 l.y.)
COU1006 AB: 508; 667x: B is very much fainter and can only be seen when A is perfectly still and round, with seeing. My PA is off, I have NNE and it's WNW. Fairly well separated about 0.5", can tell PA with drift. Physical with 119.2-year period, it is coming off periastron and slowly widening.
18h 12m 58.00s +33° 17' 53.9" P.A. 269.50 sep 0.4 mag 9.23,11.29 Sp G0 dist. 69.44 pc (226.51 l.y.)
HU 927 AB: 508; 667x: White stars, slight mag difference, hairline with 533x, nice good split with 667x. WDS uncertain, and Gaia lacks data for the primary
18h 15m 04.79s +32° 49' 26.8" P.A. 101.00 sep 0.4 mag 10.20,10.20 Sp F2
A 241 AB: 508; 533x: Very fine pair, significant delta mag, well split but close with 533x. WDS uncertain, however there is no overlap in parallax ranges.
18h 17m 10.10s +26° 40' 33.3" P.A. 288.00 sep 0.7 mag 10.56,10.70 Sp F2
18h 15m 04.79s +32° 49' 26.8" P.A. 101.00 sep 0.4 mag 10.20,10.20 Sp F2
A 241 AB: 508; 533x: Very fine pair, significant delta mag, well split but close with 533x. WDS uncertain, however there is no overlap in parallax ranges.
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