Cassiopeia A
supernova remnant in the constellation Cassiopeia
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Summary
Cassiopeia An is a supernova remnant[1].
Key Facts
- Instance of: astronomical radio source[2], astrophysical X-ray source[3], gamma-ray source[4], supernova[5]
- Constellation: Cassiopeia[6]
- Part of: Milky Way[7]
- Catalog code: SN 1671[8], SN 1667[9], SN 1680[10], SNR G111.7-02.1[11], 1ES 2321+58.5[12], 3C 461[13], 3C 461.0[14], 4C 58.40[15], 8C 2321+585[16], 1RXS J232325.4+584838[17], 3FHL J2323.4+5848[18], 2U 2321+58[19], 3A 2321+585[20], 3CR 461[21]
- Time of discovery or invention: 1947[22]
- Distance from Earth: 3.4 kiloparsec[23]
- Right ascension: 350.850000 degree[24]
- Declination: 58.8150000 degree[25]
- Epoch: J2000.0[26]
- P14541: A1Nuk[27]