SN 2006X was a Type Ia supernova about 65 million light-years away[1] in Messier 100, a spiral galaxy in the constellation Coma Berenices. The supernova was independently discovered in early February 2006 by Shoji Suzuki of Japan and Marco Migliardi of Italy.

SN 2006X

M100 before and after the supernova explosion
Event type	Supernova
Ia
Date	February 4, 2006
Constellation	Coma Berenices
Right ascension	12h 22m 53.92s
Declination	+15° 48′ 31.2″
Epoch	B1950.0
Distance	65 mly[1]
Redshift	0.0036, 0.007, 0.0067, 0.0071, 0.0068, 0.0037, 0.0043
Host	M100
Peak apparent magnitude	+13[2]
Other designations	SN 2006X
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SN 2006X is particularly significant because it is a Type Ia supernova. These supernovae are used for measuring distances, so observations of these supernovae in nearby galaxies are needed for calibration. SN 2006X is located in a well-studied galaxy, and it was discovered two weeks before its peak brightness, so it may be extraordinarily useful for understanding supernovae and for calibrating supernovae for distance measurements. It may even be possible to identify the progenitor of this supernova.^{[citation needed]}

References

External links

• Light curves and spectra on the Open Supernova Catalog
• Supernova 2006X in M100
• Brightness measures for SN 2006X
• NASA page with images of SN 2006X
• Large collection of SN 2006X images

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