NGC 664

NGC664 is a spiral galaxy in the constellation of Pisces. Its velocity with respect to the cosmic microwave background is 5137 ± 21km/s, which corresponds to a Hubble distance of . In addition, six non redshift measurements give a closer distance of . It was discovered by British astronomer John Herschel on 24 September 1830.

Supernovae Three supernovae have been observed in NGC664: SN1996bw (TypeII, mag.17.5) was discovered by the BAO Supernova Survey on 30 November 1996. SN1997W (Type II, mag.18) was discovered by the Harvard–Smithsonian Center for Astrophysics on 1 February 1997. SN1999eb (TypeIIn, mag.16.2) was discovered by the Lick Observatory Supernova Search (LOSS) on 2 October 1999.

NGC 664 Group NGC 664 is the namesake of the four member NGC664 group. The other three galaxies are: , , and .

See also List of NGC objects (1–1000)

References

External links