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1999 type Ib supernova event in the constellation Canis Major From Wikipedia, the free encyclopedia
SN 1999ec was a type Ib supernova that was discovered in the interacting galaxy NGC 2207 on October 2, 1999.[2] It was found on images taken with the Katzman Automatic Imaging Telescope at the Lick Observatory.[2] The progenitor is estimated to have had 38 times the mass of the Sun and was 5.34 million years old at the time of the outburst.[1]
Event type | Supernova |
---|---|
SN Ib[1] | |
Date | October 2, 1999[2] |
Constellation | Canis Major |
Right ascension | 06h 16m 16.16s[2] |
Declination | −21° 22′ 09.8″[2] |
Epoch | J2000.0 |
Galactic coordinates | 228.6723 -17.0277 |
Distance | 31.3 Mpc[1] |
Host | NGC 2207) |
Progenitor | 38 M☉ star |
Peak apparent magnitude | 17.9[3] |
Other designations | SN 1999ec |
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