NGC 5806

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Coordinates: Sky map 15h 00m 00.40s, +1° 53′ 27″

NGC 5806
300px
NGC 5806, as observed by the Hubble Space Telescope (HST).
Credit: HST/NASA/ESA.
Observation data (J2000 epoch)
Constellation Virgo[1]
Right ascension 15h 00m 00.40s[2]
Declination +1° 53′ 27″[1]
Redshift 0.004533[1]
Distance 69.76 million lightyears[1]
Type SBb
Apparent magnitude (V) 11.7[1]
See also: Galaxy, List of galaxies

NGC 5806 is a barred spiral galaxy in the constellation Virgo.[2][1]

Supernova Imposter

NGC 5806 contains a star that was catalogued as a supernova (SN Hunt 248), but turned out to be a supernova imposter. The progenitor was detected as a cool hypergiant with an absolute visual magnitude of −9 and 400,000 times more luminous than the sun. The eruption saw it increase in luminosity to around 80,000,000 L☉.[3]

Supernova

File:Spotting a Supernova in NGC 5806.jpg
Supernova SN 2004dg in NGC 5806

NGC 5806 has also hosted a true supernova, SN 2004dg, around 100 times brighter than SN Hunt 248. This was a typical type II supernova. The progenitor has not been detected and is expected to have been a relatively low mass, low luminosity, red supergiant.[4]

References

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External Links

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  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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