SN 2004dj

Last updated
SN 2004dj
Supernova 2004dj.jpg
Event type Supernova, high-mass X-ray binaries   OOjs UI icon edit-ltr-progressive.svg
II-P
Date31 July 2004 18:15 UTC
Constellation Camelopardalis
Right ascension 07h 37m 17.044s
Declination +65° 35 57.84″
Epoch J2000.0
Galactic coordinates ?
Distanceabout 11,000,000 light-years
RemnantNebula
Host NGC 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
  Commons-logo.svg Related media on Commons

SN 2004dj was the brightest supernova since SN 1987A at the time of its discovery. [1]

A light curve for SN 2004dj, plotted from AAVSO data SN2004djLightCurve.png
A light curve for SN 2004dj, plotted from AAVSO data

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.

References

  1. Bishop, David. "Bright Supernovae - 2004". Rochester Astronomy. Retrieved 21 August 2025.
  2. "Download Data". aavso.org. AAVSO. Retrieved 4 March 2025.
  3. 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.
  4. 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.