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Galaxy in the constellation Andromeda From Wikipedia, the free encyclopedia
NGC 662 is a spiral galaxy in the constellation of Andromeda. Its velocity with respect to the cosmic microwave background is 5,397 ± 18 km/s, which corresponds to a Hubble distance of 79.6 ± 5.6 Mpc (∼260 million light-years).[1] It was discovered by French astronomer Édouard Stephan on 22 November 1884.
NGC 662 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Andromeda |
Right ascension | 01h 44m 35.45s[1] |
Declination | +37° 41′ 44.8″[1] |
Redshift | 0.018860[1] |
Heliocentric radial velocity | 5654 ± 4 km/s[1] |
Distance | 259.7 ± 18.2 Mly (79.61 ± 5.58 Mpc)[1] |
Apparent magnitude (V) | 13.0[1] |
Characteristics | |
Type | S pec[1] |
Size | ~63,000 ly (19.32 kpc) (estimated)[1] |
Apparent size (V) | 0.8' x 0.5'[1] |
Other designations | |
IRAS 01416+3726, 2MASX J01443544+3741447, UGC 1220, MCG +06-04-060, PGC 6393[1] |
According to the Simbad database, NGC 662 is a radio galaxy.[2] It features a broad HI line[3] and is classified a field galaxy, meaning it does not belong to the galaxy group nor a cluster and is therefore gravitationally isolated.[4]
Three supernovae have been observed in NGC 662: SN 2001dn (type Ia, mag. 15.5),[5] SN 2022ojo (type II-P, mag. 16.9),[6] and SN 2024pcw (type II, mag. 18.7).[7]
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