William Herschel discovered NGC 2530 = H III-752 = h487 on 22 Feb 1789 (sweep 906) and noted "eF, lE, south of a vS star." His position and description matches UGC 4237. R.J. Mitchell, observing with Lord Rosse's 72" on 25 Jan 1857, recorded "light mottled, bright star to north, another faint star close to nf edge, suspect other stars involved."
RNGC misclassifies NGC 2530 as nonexistent (Type 7), though the correct data for NGC 2530 is listed under the entry for NGC 2529. NGC 2530 is misidentified as NGC 2529 = NGC 2531 in UGC and NGC 2529 in the MCG (+03-21-020). See my RNGC Corrections #5 and Harold Corwin's identification notes.
400/500mm - 17.5" (11/2/91): very faint, small, elongated 3:2 N-S. Unusual appearance as a mag 13 star is attached at the north end 0.8' from center and the galaxy appears to fan out to the south. The edges are difficult to define. NGC 2522 lies 25' WSW. Incorrectly identified as NGC 2529 in the RNGC, UGC, CGCG.
Notes by Steve Gottlieb