| NGC 772 | |
|---|---|
Spiral Galaxy NGC 772 with two supernova (SN 2003hl & 2003iq) and asteroid 6223 Dahl |
|
| Observation data (J2000 epoch) | |
| Constellation | Aries |
| Right ascension | 01h 59m 19.6s[1] |
| Declination | +19° 00′ 27″[1] |
| Redshift | 2472 ± 3 km/s[1] |
| Distance | 130 Mly |
| Type | SA(s)b[1] |
| Apparent dimensions (V) | 7′.2 × 4′.3[1] |
| Apparent magnitude (V) | 11.1[1] |
| Other designations | |
| UGC 1466,[1] PGC 7525,[1] Arp 78[1] | |
| See also: Galaxy, List of galaxies | |
NGC 772 (also known as Arp 78) is an unbarred spiral galaxy approximately 130 million light-years away in the constellation Aries. It is notable for possessing a single elongated outer spiral arm, which has likely arisen due to tidal interactions with nearby galaxies. At around 100,000 light years in diameter, NGC 772 rivals the Milky Way Galaxy in size and is surrounded by several satellite galaxies including the dwarf elliptical, NGC 770. Two supernovae (SN 2003 hl & SN 2003 iq) have been observed in NGC 772.
It probably has a H II nucleus, however it may be a transitional object.[2]
| Astronomical catalogs | ||
|---|---|---|
| NGC: | NGC 770 - NGC 771 - NGC 772 - NGC 773 - NGC 774 | |
| PGC: | PGC 7523 - PGC 7524 - PGC 7525 - PGC 7526 - PGC 7527 | |
| UGC: | UGC 1464 - UGC 1465 - UGC 1466 - UGC 1467 - UGC 1468 | |
| Arp: | Arp 76 - Arp 77 - Arp 78 - Arp 79 - Arp 80 | |