NGC662 is a spiral galaxy in the constellation of Andromeda. Its velocity with respect to the cosmic microwave background is 5,397 ± 18km/s, which corresponds to a Hubble distance of 79.6 ± 5.6Mpc (~260million light-years). It was discovered by French astronomer Édouard Stephan on 22 November 1884.
NGC 662 features a broad HI line and is classified a field galaxy, meaning it does not belong to the galaxy group nor a cluster and is therefore gravitationally isolated.
Supernovae Three supernovae have been observed in NGC662: SN2001dn (Type Ia, mag.15.5) was discovered by Tom Boles on 14 August 2001. SN2022ojo (TypeII-P, mag.16.938) was discovered by ATLAS on 5 July 2022. SN2024pcw (TypeII, mag.18.724) was discovered by ATLAS on 8 July 2024.
See also List of NGC objects (1–1000)
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