https://wiki.sarg.dev/index.php?action=history&feed=atom&title=SN_2004djSN 2004dj - Revision history2026-06-25T20:18:29ZRevision history for this page on the wikiMediaWiki 1.44.2https://wiki.sarg.dev/index.php?title=SN_2004dj&diff=574261&oldid=previmported>Phantomdj: added reference2025-08-21T18:44:40Z<p>added reference</p>
<p><b>New page</b></p><div>{{Short description|July 2004 supernova event in the constellation Camelopardalis}}<br />
{{Infobox supernova |<br />
| name = SN 2004dj<br />
| image = Supernova 2004dj.jpg<br />
| type = II-P<br />
| SNRtype = Nebula<br />
| host = [[Spiral Galaxy NGC 2403|NGC 2403]]<br />
| constellation = [[Camelopardalis]]<br />
| epoch = J2000.0<br />
| ra = 07<sup>h</sup> 37<sup>m</sup> 17.044<sup>s</sup><br />
| dec = +65° 35{{prime}} 57.84{{pprime}}<br />
| gal = ?<br />
| discovery = 31 July 2004 18:15 [[UTC]]<br />
| mag_v = +11.2<br />
| distance = about 11,000,000 light-years [http://antwrp.gsfc.nasa.gov/apod/ap040907.html]<br />
| progenitor = Unknown star in compact cluster [[Sandage 96]]<br />
| progenitor_type = Supergiant<br />
| b-v = Unknown<br />
| notes = Light Curves }}<br />
'''SN 2004dj''' was the brightest [[supernova]] since [[SN 1987A]] at the time of its discovery.<ref name=bishop>{{cite web | url = https://www.rochesterastronomy.org/sn2004/index.html | title = Bright Supernovae - 2004 | last = Bishop | first = David | website = Rochester Astronomy | access-date = 21 August 2025}}</ref><br />
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[[File:SN2004djLightCurve.png|thumb|left|A [[light curve]] for SN 2004dj, plotted from [[American Association of Variable Star Observers|AAVSO]] data<ref name="aavso"/>]]<br />
This [[Type_II_supernova#Light_curves_for_Type_II-L_and_Type_II-P_supernovae|Type II-P supernova]] was discovered by [[Japan]]ese [[astronomer]] [[Kōichi Itagaki]] on 31 July 2004. At the time of its discovery, its apparent brightness was 11.2 [[apparent magnitude|visual magnitude]]; the discovery occurred after the supernova had reached its [[peak magnitude]].<ref>{{Cite journal |last1=Nakano |first1=S. |last2=Itagaki |first2=K. |last3=Bouma |first3=R. J. |last4=Lehky |first4=M. |last5=Hornoch |first5=K. |date=2004-08-01 |title=Supernova 2004dj in NGC 2403 |url=https://ui.adsabs.harvard.edu/abs/2004IAUC.8377....1N |journal=International Astronomical Union Circular |issue=8377 |pages=1 |bibcode=2004IAUC.8377....1N |issn=0081-0304}} </ref><ref>{{Cite journal |last1=A. J. |first1=Nayana |last2=Chandra |first2=Poonam |last3=K. Ray |first3=Alak |date=2018-08-20 |title=Long-term Behavior of a Type IIP Supernova SN 2004dj in the Radio Bands |journal=The Astrophysical Journal |volume=863 |issue=2 |pages=163 |doi=10.3847/1538-4357/aad17a |issn=1538-4357|doi-access=free |bibcode=2018ApJ...863..163N }}</ref> The supernova's progenitor is a star in a young, compact [[star cluster]] in the [[galaxy]] [[Spiral Galaxy NGC 2403|NGC 2403]], in [[Camelopardalis]]. The cluster had been cataloged as the 96th object in a list of luminous [[star]]s 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.<br />
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==External links==<br />
* [https://sne.space/sne/SN2004dj/ Light curves and spectra] {{Webarchive|url=https://web.archive.org/web/20171202203127/https://sne.space/sne/SN2004dj/ |date=2017-12-02 }} on the [https://sne.space Open Supernova Catalog] {{Webarchive|url=https://web.archive.org/web/20160303230459/https://sne.space/ |date=2016-03-03 }}<br />
* [https://web.archive.org/web/20040906045749/http://www.supernovae.net/sn2004/sn2004dj.html supernovae.net image collection]<br />
* {{APOD |date=7 September 2004 |title=Cropped and rotated HST photograph}}<br />
* [http://www.rochesterastronomy.org/sn2004/sn2004dj.html Bright Supernova page on 2004dj]<br />
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==References==<br />
{{Reflist|refs=<br />
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<ref name="aavso">{{cite web |title=Download Data |url=https://www.aavso.org/data-download |website=aavso.org |publisher=AAVSO |access-date=4 March 2025}}</ref><br />
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}}<br />
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{{Camelopardalis|state=collapsed}}<br />
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{{DEFAULTSORT:SN 2004dj}}<br />
[[Category:Astronomical objects discovered in 2004|20040731]]<br />
[[Category:Camelopardalis]]<br />
[[Category:Supernovae]]<br />
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{{var-star-stub}}</div>imported>Phantomdj