25 may 2022 physical pairs on the 20-inch

It was forecasted to be clear, transparent, with excellent seeing last night. While transparency was indeed good, due to a hot high pressure area over California, the seeing did not live up to expectations. I think there was still too much radiating cooling from the surrounding houses, roads, and land in general. And maybe the mirror was not all the way cooled, in spite of opening up and letting it in the shade since 4pm. But seeing was good enough to go after a few good close pairs. I worked my known-physical list. I started in Virgo but since that was over a neighbor's roof currents I redirected upward to better seeing.  I used my apodising mask throughout.

A 79 AB: 508; 600x: Light orange stars, good clean split, 1 Dm, PA to the east.  WDS grade 4 (medium confidence) orbital solution, 232-year period.  However, there is no overlap to the parallax ranges, -43%, so this one likely is not binary.  
12h 27m 00.77s -03° 32' 05.6" P.A. 97.50 sep 0.5 mag 8.89,10.03 Sp G5 dist. 63.05 pc (205.67 l.y.)

A 78 AB: 508; 600x: Clean split with seeing, white stars, 1 Dm.  WDS grade 3 orbital solution, 111.93-years.  Unfortunately there is no parallax data for the primary.  The orbital solution has this widening a small amound and crossing to the ESE in the 2040s.

12h 26m 47.72s -05° 35' 31.6" P.A. 82.30 sep 0.3 mag 8.11,8.79 Sp F4V dist. 110.38 pc (360.06 l.y.)

HU 640 AB: 508; 500x: Light orange stars, PA WSW, nicely split, 1 Dm.  WDS grade 3 orbital solution 124.8-year period.  Gaia is missing parallax data.  This will tighten to 0.2" and be due north by 2038.
12h 50m 41.87s +20° 32' 04.9" P.A. 262.80 sep 0.4 mag 10.19,9.91 Sp K5 dist. 38.27 pc (124.84 l.y.)

HU 739 AB: 508; 500x: Rather difficult faint B star can be seen with foveal coaxing and then held with direct vision, very much fainter around 3 Dm, well split, PA to the SW.  Seen with 300x but better view with 500x.  WDS grade 5 orbital solution 307-year period.  It has 23% of the parallax ranges overlapping, only 23 AU weighted separation (a little more than the distance from Earth to Neptune!), 0.5+0.3 Msol, so it is certainly binary.  It will widen a half an arcsecond by 2042.
13h 06m 15.40s +20° 43' 45.1" P.A. 197.00 sep 1.8 mag 9.72,12.11 Sp K4V dist. 18.8 pc (61.33 l.y.)

A 2166 AB: 508; 600x: KR Com.  Rod with a weaker end to the north west, white.  Pretty tough.  WDS grade 2 orbital solution with an 11.228-year period, there is no Gaia data for the secondary (likely too close).  In two years it will be 0.14" separated due north, and continue to make its turn eastward into imperceptability by 2029's periastron.  Difficult as it is, this is one to keep an eye on each year.

13h 20m 15.78s +17° 45' 57.7" P.A. 326.00 sep 0.1 mag 7.78,8.38 Sp F8V dist. 83.96 pc (273.88 l.y.)

A 570 AB: 508; 600x: Notched elongation, noticable difference in magnitude, PA westerly.  WDS grade 1 (definitive) orbit, 29.9-year period, no Gaia parallax data for the primary.  It will make more than a quarter turn to the east by 2034.

14h 32m 20.27s +26° 40' 38.4" P.A. 217.50 sep 0.2 mag 6.61,7.08 Sp A6V dist. 73.64 pc (240.21 l.y.)