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| Event type | Supernova  |
|---|---|
| type Ic | |
| Date | byNearby Supernova Factory USA |
| Constellation | Virgo |
| Right ascension | 13h 19m 20.19s |
| Declination | +08° 55' 44.3" |
| Epoch | J2000.0 |
| Galactic coordinates | 324.1496 +70.6427 |
| Host | Anon J131920+0855 |
| Other designations | SN 2007bi |
SN 2007bi was an extremely energeticsupernova discovered early in 2007 by the internationalNearby Supernova Factory based at the U.S. Department of Energy'sLawrence Berkeley National Laboratory. The precursor star is estimated to have had 200 solar masses at the time of its formation and around 100 solar masses in its core when it went supernova. The explosion ejected more than 22 solar masses of silicon and other heavy elements into space during this supernova including more than 6 solar masses of radioactive nickel which caused the expanding gases to glow very brightly for many months.
The supernova has been described as an unambiguous fit for thepair-instability supernova model.
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