| SN 2004dj | |
| Type: | II-P |
| Snrtype: | Nebula |
| Host: | NGC 2403 |
| Constellation: | Camelopardalis |
| Epoch: | J2000.0 |
| Ra: | 07h 37m 17.044s |
| Dec: | +65° 35 57.84 |
| Gal: | ? |
| Discovery: | 31 July 2004 18:15 UTC |
| Iauc: | http://cbat.eps.harvard.edu/iauc/08300/08377.html |
| Mag V: | +11.2 |
| Distance: | about 11,000,000 light-years http://antwrp.gsfc.nasa.gov/apod/ap040907.html |
| Progenitor: | Unknown star in compact cluster Sandage 96 |
| Progenitor Type: | Supergiant |
| B-V: | Unknown |
| Notes: | Light Curves |
SN 2004dj was the brightest supernova since SN 1987A at the time of its discovery.
This Type II-P supernova was discovered by Koichi Itagaki, a Japanese astronomer on July 31, 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.[1] [2] 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.