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SN 2004dj
July 2004 supernova event in the constellation Camelopardalis / From Wikipedia, the free encyclopedia
SN 2004dj was the brightest supernova since SN 1987A at the time of its discovery.[citation needed]
Quick Facts Event type, Date ...
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Event type | Supernova, high-mass X-ray binaries ![]() |
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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 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.