NGC 5806 [SEP] constellation
NGC 5806
NGC 5806 is a barred spiral galaxy in the constellation Virgo.
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 .
Supernovae.
NGC 5806 has also hosted several true supernova. SN 2004dg, around 100 times brighter
NGC 48
The New General Catalogue object NGC 48 is a barred spiral galaxy located approximately 79.3 million light-years from the Solar System in the constellation Andromeda.
See also.
- Spiral galaxy
- List of NGC objects (1–1000)
- Andromeda (constellation)
External links.
- http://spider.seds.org/ngc/ngc.cgi?48
- http://spider.seds.org/ngc/ngc_fr.cgi?48
- http://spider.seds.org/ngc/revngcic.cgi?NGC48
- http://vizier.u-strasbg.fr/viz-bin/VizieR-S?NGC+48
- Базы данных про объекты NGC/IC