UGC 4904 is a barred spiral galaxy in the constellation Lynx, located about 77 million light-years from Earth. On October 20, 2004, a supernova impostor was observed by Japanese amateur astronomer Koichi Itagaki within the galaxy. This same star may have transitioned from a LBV star to a Wolf–Rayet star[5] shortly before it was observed as blowing up as hypernova SN 2006jc on October 11, 2006.[6]
UGC 4904 | |
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Observation data (J2000 epoch) | |
Constellation | Lynx |
Right ascension | 09h 17m 21.709s[1] |
Declination | +41° 54′ 38.92″[1] |
Redshift | 0.005571[2] |
Heliocentric radial velocity | 1665[2] |
Apparent magnitude (B) | 15.0[3] |
Characteristics | |
Type | SABdm[4] |
Notable features | Dwarf spiral galaxy with a supernova impostor |
Other designations | |
UGC 4904, MCG +07-19-054, PGC 26231[3] |