SN 2004dj

SN 2004dj
Event typeSupernova, high-mass X-ray binaries Edit this on Wikidata
II-P
Date31 July 2004 18:15 UTC
ConstellationCamelopardalis
Right ascension07h 37m 17.044s
Declination+65° 35 57.84″
EpochJ2000.0
Galactic coordinates?
Distanceabout 11,000,000 light-years [1]
RemnantNebula
HostNGC 2403
ProgenitorUnknown star in compact cluster Sandage 96
Progenitor typeSupergiant
Colour (B-V)Unknown
Notable featuresLight Curves
Peak apparent magnitude+11.2
Other designationsSN 2004dj, CXOU J073717.1+653557, CXO J073717.0+653557
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SN 2004dj was the brightest supernova since SN 1987A at the time of its discovery.[citation needed]

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.

  1. ^ Nakano, S.; Itagaki, K.; Bouma, R. J.; Lehky, M.; Hornoch, K. (2004-08-01). "Supernova 2004dj in NGC 2403". International Astronomical Union Circular (8377): 1. Bibcode:2004IAUC.8377....1N. ISSN 0081-0304.
  2. ^ A. J., Nayana; Chandra, Poonam; K. Ray, Alak (2018-08-20). "Long-term Behavior of a Type IIP Supernova SN 2004dj in the Radio Bands". The Astrophysical Journal. 863 (2): 163. Bibcode:2018ApJ...863..163N. doi:10.3847/1538-4357/aad17a. ISSN 1538-4357.