iPTF14hls
Supernova iPTF14hls before and after detection | |
| Observation data Epoch J2000 Equinox | |
|---|---|
| Constellation | Ursa Major |
| Right ascension | 09h 20m 34.30s |
| Declination | +50° 41′ 46.80″ |
| Apparent magnitude (V) | 17.716 (R) |
| Astrometry | |
| Distance | 156,200,000 pc (509,000,000 ly) pc |
| Database references | |
| SIMBAD | data |
iPTF14hls is an unusual supernova star that erupted continuously for about 1,000 days beginning in September 2014 before becoming a remnant nebula. It had previously erupted in 1954. None of the theories nor proposed hypotheses fully explain all the aspects of the object.