NGC 4858 (also IRAS 12566+2823, MCG 5-31-51 and PGC 44535) is a magnitude +15.2 spiral galaxy located 433 million light-years away away in the constellation Coma Berenices.
The galaxy was discovered by German-Danish astronomer Heinrich Louis d'Arrest using a 27.94 cm (11 inch) f/17.5 Merz-Refractor at the Copenhagen Observatory on the 21st April 1865.
Right Ascension 12h 59m 02.3s, Declination Dec +28° 06' 55"
