This radio galaxy is the second brightest in AGC 1890 and at a distance of ~780 million light years (z = .057), is one of the most distant galaxies in the NGC, along with NGC 870 and NGC 2603, according to Wolfgang Steinicke

Albert Marth discovered NGC 5535 = m 273 on 8 May 1864 and noted "eF, S, irr R." His position is 7 sec of RA east and 1.7' south of PGC 97424, the second brightest galaxy in the core of AGC 1890. It is possible, though, this was another observation of NGC 5539 = PGC 51054, the brightest member just 2.4' SE. MCG and CGCG identify PGC 51054 as NGC 5539/NGC 5535 and have entry for this galaxy.

400/500mm - 17.5" (7/18/01): extremely faint and small, round, 10"-15" diameter. Collinear with two mag 14/15 stars 2.5' and 4' SW. Located 2.4' NW of brighter NGC 5539.

900/1200mm - 48" (4/19/17): at 610x; fairly faint, very small, round, 12"-15" diameter. Situated 2.4' NW of NGC 5539, the brightest cluster member in AGC 1890.

Notes by Steve Gottlieb