Swedish astronomer Nils Dunér discovered NGC 2273 on 15 Sep 1867 using the 9.6-inch Merz refractor of the Lund Observatory. In AN 78, 251 (1871) he described it as "fairly bright and at least 2' in diameter, with a strong concentration in the middle." and measured an accurate position (using mag 8.6 HD 49039). This was his only NGC discovery. NGC 2273 was also observed by Herman Schultz on 3 and 8 Sep 1872 with the 9.6" refractor at Uppsala and listed as "Dunér's Nova" in his 1874 publication.

400/500mm - 17.5" (1/20/90): fairly bright, moderately large, oval SW-NE, very bright core, stellar nucleus. Located 5.2' SSW of mag 8.5 SAO 13976 and 6.7' WSW of mag 8.3 SAO 13979. NGC 2273B lies 40' SW.

Notes by Steve Gottlieb