IC 1868 IC 158
Cet
☀15.1mag
Ø 66'' / 18''

ESO 474-026, an unusual double-ringed galaxy, lies 13' SE. It appeared fairly faint, fairly small, irregularly round, 25" diameter, very small bright nucleus with a stellar peak. Located 9.5' SSE of mag 7.5 HD 4507. This galaxy has two perpendicular rings -- both an equatorial ring and a polar ring surrounding a central nearly spherical galaxy (only the third component seen). It is thought to have resulted from the major merger of two haloes with a 1:1 mass ratio.

Delisle Stewart discovered IC 1582 = DS 120 on a plate taken 3 Nov 1898 at the Harvard station in Arequipa. He described it as "eF, eS, pmE at 45°, * in M[iddle]."

600/800mm - 24" (12/28/16): at 282x; very faint, fairly small, elongated 5:2 SW-NE, 30"x12", low even surface brighness. I couldn't hold the glow continuously but it was often visible with averted vision. Located 10' SW of mag 7.5 HD 4507 and 4.7' E of a mag 11.0 star. The galaxy forms the west vertex of a triangle with two mag 12.5-13 stars 2.5' E and 3' SE.

Notes by Steve Gottlieb