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| IC 831 | |
|---|---|
 Sloan Digital Sky Survey of IC 831 | |
| Observation data (J2000epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 52m 44.10s[1] |
| Declination | +26° 28′ 13.8″[1] |
| Redshift | 0.02129 |
| Heliocentric radial velocity | 6,406 km/s |
| Distance | 300 Mly (92 Mpc) |
| Apparent magnitude (V) | 17.93 |
| Characteristics | |
| Type | E |
| Size | 60,000 ly |
| Notable features | Galaxy host of supernovaiPTF14atg |
| Other designations | |
| PGC 43708,2MASX J12524408+2628135,MCG+05-30-113, AGC 221803, CAIRNS J125244.02+262813.6,SDSS J125244.06+262813.4, [DFO95] 113,LEDA 43708 | |
IC 831 is a type E-S0[1]elliptical galaxy located 300 millionlight-years away from theSolar System in the constellation ofComa Berenices.[2][3] It is estimated to be 60,000 light-years in diameter[2] and was first discovered on 25 February 1892 byRudolf Spitaler, an Austrian astronomer.[4] It is not known whether it has anactive galactic nucleus.
Type Ia supernova,iPTF14atg was discovered in IC 831 on May 3, 2015, which was similar toSN 2002es that exploded prior to that, inUGC 2708, alenticular galaxy.[5][6] The progenitor type was awhite dwarf, in which when it exploded, some of the shockwaves impacted its companion star.[7] It was discovered byIntermediate Palomar Transient Factory in California.
