SN 1975A

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SN 1975A
Observation data (Epoch B2000.0)
Supernova type Ia
Remnant type unknown
Host galaxy NGC 2207
Constellation Canis Major
Right ascension 06h 16m 26s
Declination -21° 21' 24"
Galactic coordinates 228.676 -16.988
Discovery date ?
Peak magnitude (V) +14.16
Distance 144,000,000 ly
Physical characteristics
Progenitor unknown
Progenitor type ?
Colour (B-V) unknown

SN 1975a was a type Ia supernova located in NGC 2207. It was located 59" east and 55" north of the nucleus of NGC 2207, toward IC 2163.[1]


  1. ^ Kirshner, Robert P.; Arp, H.C.; Dunlap, J.R. (1976). "Observations of Supernovae - 1975a in NGC 2207 and 1975b in the Perseus Cluster". Astrophysical Journal 207 (1): 44–52. Bibcode:1976ApJ...207...44K. doi:10.1086/154465.