Had one mostly clear night, though transparency was off 3/5, and seeing was also average 5-6/10. So off came the cover on the 6-inch f/15 refractor and in for a night of Struves.
STF7 AB: 152; 250x: Close, slightly unequal. WDS uncertain, but there is 86% parallax range overlap, only 546 AU weighted separation, 3.1+2.8 Msol, and the radial velocity delta 0.0 is less than the escape velocity 4.4, so it is likely binary and needs an orbit.00h 11m 38.91s +55° 57' 40.9" P.A. 210.00 sep 1.3 mag 7.99,8.46 Sp B8V dist. 598.8 pc (1953.29 l.y.)
STF9 AB: 152; 125x: Wide, equal 9th magnitude stars. WDS says it's physical, but there is no overlap of the parallax ranges -20%, and the weighted separation is 17,218 AU -- too far, it is not binary.
00h 13m 44.16s +49° 33' 32.0" P.A. 165.00 sep 20.0 mag 9.34,9.25 Sp A2
STF10 AB: 152; 125x: Wide, slightly unequal pair. Very faint C star close to B. WDS says it's physical, but there's no overlap of the parallax ranges -32%, it is not binary.
00h 14m 49.33s +62° 50' 25.5" P.A. 176.00 sep 17.6 mag 8.04,8.55 Sp A2V
STF16 AB: 152; 125x: Wide, 1 Dm, light orange stars. WDS uncertain, but there is 13% overlap of the parallax ranges, only 949 AU weighted separation, 2.1+1.5 Msol, so it is possible it is binary.
00h 16m 41.65s +54° 39' 36.5" P.A. 40.00 sep 5.8 mag 7.68,8.78 Sp A3 dist. 123.92 pc (404.23 l.y.)
STF30 AB: 152; 125x: Wide, 2 Dm, white A and light orange B. WDS says it is not physical, and there is -93% parallax range overlap, it is not binary.
00h 27m 12.45s +49° 59' 08.6" P.A. 316.00 sep 13.2 mag 6.96,8.92 Sp B9III dist. 248.14 pc (809.43 l.y.)
STF38 AB: 152; 125x: Wide near equal stars. WDS says they're physical, but there's no overlap of the parallax ranges, -12%, and the weighted separation is a bit far at 7,349 AU, it is not likely binary.
00h 35m 27.32s +58° 40' 42.6" P.A. 144.00 sep 17.1 mag 8.66,8.97 Sp A0 dist. 92.59 pc (302.03 l.y.)
STF43 AB: 152; 125x: Pretty, near equal pair, closely split around 5", in a rich field. WDS uncertain, and there is -56% parallax range overlap, it is not binary.
00h 36m 49.07s +60° 30' 56.0" P.A. 168.00 sep 4.7 mag 9.00,9.45 Sp B5 dist. 1162.79 pc (3793.02 l.y.)
STF45 AB: 152; 125x: Bright, light orange A, 3 Dm wide B. WDS says not physical linear solution. There is -22% overlap of the parallax ranges, and the radial velocity delta 2.6 exceeds the escape velocity 1.9, showing it is not binary.
00h 38m 41.60s +46° 57' 24.6" P.A. 91.00 sep 19.1 mag 6.85,10.06 Sp G9III dist. 112.23 pc (366.09 l.y.)
STF48 AB: 152; 125x: Brilliant white pair, near equal, well split. WDS uncertain, but there is 58% parallax range overlap, 1,493 AU weighted separation, 2.6+2.5 Msol, and the radial velocity delta 0.2 is less than the escape velocity 2.5, it is likely binary and needs an orbit.
00h 42m 40.01s +71° 21' 57.3" P.A. 333.00 sep 5.4 mag 7.80,8.05 Sp ApSi dist. 277.01 pc (903.61 l.y.)
STF50 AB: 152; 125x: Reddish A, very faint 3 Dm B, wide. WDS says not physical, linear solution. There is no overlap of the parallax ranges, -97%, it is not binary.
00h 44m 21.81s +77° 12' 36.1" P.A. 97.00 sep 22.5 mag 8.01,10.62 Sp K5 dist. 581.4 pc (1896.53 l.y.)
STF57 AB: 152; 125x: Very faint, slightly unequal but B needs averted vision to brighten, well split. WDS uncertain, but there is 25% parallax range overlap, only 647 AU weighted separation, 0.9+0.8 Msol, and the radial velocity delta 0.6 is less than the escape velocity 2.1, it is likely binary and needs an orbit.
00h 47m 31.33s +72° 37' 32.3" P.A. 199.00 sep 6.3 mag 10.54,10.90 Sp G0
STF59 AB: 152; 250x: Verly closely split, also split at 175x, white stars, nearly 2 Dm. WDS uncertain, and there is -27% parallax range overlap, it is not likely binary.
00h 47m 59.03s +51° 26' 41.2" P.A. 149.00 sep 2.3 mag 7.24,8.06 Sp B9.5IV dist. 213.68 pc (697.02 l.y.)
STF60 AB: 152; 125x: Bright white A, 2 Dm B, well split. Achird. WDS grade 3 orbit, 479-year period. There is 49% overlap of the parallax ranges, only 77 AU weighted separation, 1.1+0.5 Msol, so yes, binary.
00h 49m 06.29s +57° 48' 54.7" P.A. 326.70 sep 13.4 mag 3.52,7.36 Sp G1V+M dist. 5.95 pc (19.41 l.y.)
STF65 AB 152; 125x: Near equal white stars, fairly close. WDS uncertain, but there is 73% overlap of the parallax ranges, only 656 AU weighted separation, 2.2+2.2 Msol, and the radial velocity delta 0 is less than the escape velocity 3.5, it is likely binary and needs an orbit.
00h 52m 45.61s +68° 51' 59.3" P.A. 221.00 sep 3.2 mag 8.00,8.02 Sp A2 dist. 255.75 pc (834.26 l.y.)
STF70 AB: 152; 125x: Bright white A and very faint, 3 Dm B which pops with averted vision. There's a near equal 1.5" CD pair 11.04/11.40 not seen. WDS uncertain, but there is 32% overlap of the parallax ranges, only 764 AU weighted separation, 2.2+1.0 Msol, but the radial velocity 2.8 is slightly more than the escape velocity 2.7, so it might be binary and needs to be monitored.
00h 53m 47.53s +52° 41' 21.6" P.A. 247.00 sep 8.3 mag 6.33,9.49 Sp A0 dist. 88.42 pc (288.43 l.y.)
STF83 AB: 152; 125x: Faint A, B seen with averted vision only, wide. WDS says Linear solution, Proper motion indicates non-physical. Indeed there is -98% overlap of the parallax ranges, it is not binary.
01h 03m 30.15s +50° 18' 45.2" P.A. 313.00 sep 29.2 mag 7.88,11.16 Sp G0 dist. 96.25 pc (313.97 l.y.)
STF96 AB: 152; 250x: Tough, hairline split with seeing only, large Dm. WDS uncertain, but there is 35% overlap of the parallax ranges, only 219 AU weighted separation, 2.4+1.9 Msol, so it is likely binary and needs an orbit.
01h 12m 41.24s +65° 00' 32.9" P.A. 287.00 sep 0.9 mag 7.92,8.92 Sp F0 dist. 218.34 pc (712.23 l.y.)
STF97 AB: 152; 125x: Near equal, well split, white. WDS says it's physical, but there is no overlap of the parallax ranges, -21%, so it is likely not binary.
01h 12m 18.98s +51° 31' 30.1" P.A. 102.00 sep 4.5 mag 8.69,9.13 Sp A0 dist. 181.16 pc (590.94 l.y.)
STF105 AB: 152; 125x: Faint B seen with seeing only, closely split. WDS says not physical, but there is no parllax data for the primary.
01h 18m 57.50s +66° 09' 28.0" P.A. 185.00 sep 3.0 mag 8.83,9.77 Sp A0 dist. 334.45 pc (1090.98 l.y.)
STF109 AB: 152; 150x: Significant Dm, closely split. WDS says proper motion indicates physical, but there is no overlap of the parallax ranges, -8%, it likely is not binary.
01h 20m 03.57s +63° 53' 08.0" P.A. 9.00 sep 7.3 mag 9.86,10.54
STF114 AB: 152: 150x: Very significant Dm, closely split, with seeing. WDS uncertain, and there is no overlap of the parallax ranges, -42%, so it is not binary.
01h 24m 08.14s +72° 50' 49.6" P.A. 356.00 sep 3.7 mag 7.23,9.74 Sp A0 dist. 568.18 pc (1853.4 l.y.)
STF115 AB: 152; 250x: Elongation to very subtle notch with seeing only. WDS grade 3 orbit, 222-year period. There is no parllax data for the primary. This should continue to widen to the southwest in the coming decades.
01h 23m 21.27s +58° 08' 35.6" P.A. 155.90 sep 0.5 mag 7.10,7.30 Sp F5V dist. 58.82 pc (191.87 l.y.)
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