SN 2004dj
July 2004 supernova event in the constellation Camelopardalis
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SN 2004dj was the brightest supernova since SN 1987A at the time of its discovery.[1]
 | |
| Event type | Supernova, high-mass X-ray binaries |
|---|---|
| II-P | |
| Date | 31 July 2004 18:15 UTC |
| Constellation | Camelopardalis |
| Right ascension | 07h 37m 17.044s |
| Declination | +65° 35′ 57.84″ |
| Epoch | J2000.0 |
| Galactic coordinates | ? |
| Distance | about 11,000,000 light-years |
| Remnant | Nebula |
| Host | NGC 2403 |
| Progenitor | Unknown star in compact cluster Sandage 96 |
| Progenitor type | Supergiant |
| Colour (B-V) | Unknown |
| Notable features | Light Curves |
| Peak apparent magnitude | +11.2 |
| Other designations | SN 2004dj, CXOU J073717.1+653557, CXO J073717.0+653557 |
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This Type II-P supernova was discovered by Japanese astronomer Kōichi Itagaki on 31 July 2004. At the time of its discovery, its apparent brightness was 11.2 visual magnitude; the discovery occurred after the supernova had reached its peak magnitude.[3][4] The supernova's progenitor is a star in a young, compact star cluster in the galaxy NGC 2403, in Camelopardalis. The cluster had been cataloged as the 96th object in a list of luminous stars and clusters by Allan Sandage in 1984; the progenitor is therefore commonly referred to as Sandage 96. This cluster is easily visible in a Kitt Peak National Observatory image and appears starlike.
