NGC 735
Galaxy in the constellation Triangulum
From Wikipedia, the free encyclopedia
NGC 735 is a spiral galaxy in the constellation of Triangulum. Its velocity with respect to the cosmic microwave background is 4374 ± 18 km/s, which corresponds to a Hubble distance of 210.4 ± 14.7 Mly (64.52 ± 4.52 Mpc).[1] In addition, eight non redshift measurements give a distance of 227.21 ± 7.99 Mly (69.662 ± 2.449 Mpc).[2] The galaxy was discovered by German-British astronomer William Herschel on 13 September 1784).[3]
| NGC 735 | |
|---|---|
NGC 735 imaged by Pan-STARRS | |
| Observation data (J2000 epoch) | |
| Constellation | Triangulum |
| Right ascension | 01h 56m 37.9936s[1] |
| Declination | +34° 10′ 36.446″[1] |
| Redshift | 0.015441 [1] |
| Heliocentric radial velocity | 4629 ± 3 km/s[1] |
| Distance | 210.4 ± 14.7 Mly (64.52 ± 4.52 Mpc)[1] |
| Group or cluster | NGC 669 Group (LGG 37) |
| Apparent magnitude (V) | 13.3[1] |
| Characteristics | |
| Type | Sb[1] |
| Size | ~125,900 ly (38.60 kpc) (estimated)[1] |
| Apparent size (V) | 1.8′ × 0.8′[1] |
| Other designations | |
| IRAS F01537+3356, 2MASX J01563802+3410366, UGC 1411, MCG +06-05-058, PGC 7275, CGCG 522-078[1] | |
NGC 735 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[4][5]
Supernovae
Three supernovae have been observed in NGC 664:
- American astronomer John Huchra discovered SN 1972L (type unknown, mag. 15)[6] on 3 September 1972.[7]
- SN 2000dj (Type II, mag. 17.4) was discovered by the Lick Observatory Supernova Search (LOSS) on 8 September 2000.[8][9]
- SN 2006ei (Type Ic, mag. 18.5) was discovered by LOSS on 21 August 2006.[10][11]
