George Johnstone Stoney, Lord Rosse's assistant, discovered NGC 2373 = St IX-8, along with NGC 2375, on 20 Feb 1849. He recorded "6 nebulae of which epsilon NGC 2375] is perhaps a double star." NGC 2373 was labeled Zeta on the sketch in the 1861 publication and accurately measured from NGC 2375, although John Herschel didn't assign an GC designation. Dreyer first catalogued NGC 2373 as GCS 5380. Édouard Stephan independently discovered the galaxy on 8 Feb 1878 and measured an accurate position.

300/350mm - 13.1" (2/23/85): faint, elongated, small. A mag 13 star is at the NE edge. Forms a trio with NGC 2375 6.7' E and NGC 2379 10' E. First of seven in the NGC 2389 group.

400/500mm - 18" (1/13/07): faint, very small, round, 20". A mag 12.7 star is just off the NE side 24" from the center. Located 6.8' W of NGC 2375 in the NGC 2389 cluster.

Notes by Steve Gottlieb