UGC 10643, which is identified as NGC 6274 in the RNGC and PGC, is located 21' NW. It appeared faint, small, possibly elongated E-W, brighter core. Located 2' E of an isosceles triangle consisting of three mag 13-14 stars. The nearest of these stars is a close double.

Albert Marth discovered NGC 6274 = m 326 on 28 Jun 1864 and noted "eF, vS." There is nothing close to his position.

RNGC and PGC identify UGC 10643 as NGC 6274. UGC 10643 is a double system (with PGC 59381) situated 11' north and 15 seconds of RA west of Marth's position, so it's a pretty poor match. Karl Reinmuth first gave this identification in his 1926 photographic survey "Die Herschel-Nebel".

UGC 10654 is a more likely candidate. It is situated 1.0 minute of time east of Marth's position, so is only off in one direction and a digit error would account for the error. Edward Fath suggested this identification in his 1914 paper "A Study of Nebulae", based on plates taken with the 60" at Mt. Wilson. Harold Corwin concurs with my suggestion that NGC 6274 = UGC 10654, particularly as NGC 6274 would be within 6' of NGC 6282, which Marth also discovered the same night.

400/500mm - 17.5" (7/1/89): faint, very small, slightly elongated N-S, weak concentration. A mag 15 star is off the southwest edge 19" from the center. Located 6' SSW of NGC 6282.

600/800mm - 24" (7/15/15): faint to fairly faint, small, slightly elongated N-S, 18"x12", small slightly brighter nucleus. A mag 15 star is just off the southwest side [20" from center]. Forms a pair with NGC 6282 6.2' NNE.

UGC 10643, which is identified as NGC 6274 in the RNGC, PGC, NED and SIMBAD is located 21' NW. At 225x and 375x it appeared faint to fairly faint, small, roundish, ~22"x18", small slightly brighter nucleus. UGC 10643b = MCG +05-40-020 is a very challenging galaxy (B = 16.5) attached on the south end. At 225x; UGC 10643b was occasionally visible as an extremely faint glow (too brief/faint for shape). At 375x I could tell it was elongated to the southeast when it popped.

Notes by Steve Gottlieb