NGC 664
Galaxy in the constellation Pisces
From Wikipedia, the free encyclopedia
NGC 664 is a spiral galaxy in the constellation of Pisces. Its velocity with respect to the cosmic microwave background is 5137 ± 21 km/s, which corresponds to a Hubble distance of 247.1 ± 17.3 Mly (75.77 ± 5.31 Mpc).[1] In addition, six non redshift measurements give a closer distance of 218.91 ± 3.66 Mly (67.117 ± 1.123 Mpc).[2] It was discovered by British astronomer John Herschel on 24 September 1830.[3]
Right ascension01h 43m 45.7857s[1]
Declination+04° 13′ 22.486″[1]
| NGC 664 | |
|---|---|
Spiral galaxy NGC 664 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Pisces |
| Right ascension | 01h 43m 45.7857s[1] |
| Declination | +04° 13′ 22.486″[1] |
| Redshift | 0.018113 [1] |
| Heliocentric radial velocity | 5430 ± 3 km/s[1] |
| Distance | 247.1 ± 17.3 Mly (75.77 ± 5.31 Mpc)[1] |
| Group or cluster | NGC 664 Group |
| Apparent magnitude (V) | 12.8[1] |
| Characteristics | |
| Type | Sb?[1] |
| Size | ~114,600 ly (35.14 kpc) (estimated)[1] |
| Apparent size (V) | 1.1′ × 0.9′[1] |
| Other designations | |
| IRAS 01411+0358, 2MASX J01434582+0413222, UGC 1210, MCG +01-05-029, PGC 6359, CGCG 412-023[1] | |
Supernovae
Three supernovae have been observed in NGC 664:
- SN 1996bw (Type II, mag. 17.5) was discovered by the BAO Supernova Survey on 30 November 1996.[4][5]
- SN 1997W (Type II, mag. 18) was discovered by the Harvard–Smithsonian Center for Astrophysics on 1 February 1997.[6][7]
- SN 1999eb (Type IIn, mag. 16.2) was discovered by the Lick Observatory Supernova Search (LOSS) on 2 October 1999.[8][9]
