NGC 7177
Galaxy in the constellation Pegasus
From Wikipedia, the free encyclopedia
NGC 7177 is a barred spiral galaxy in the constellation of Pegasus. Its velocity with respect to the cosmic microwave background is 801±24 km/s, which corresponds to a Hubble distance of 38.6 ± 2.9 Mly (11.82 ± 0.90 Mpc).[1] However, 12 non-redshift measurements give a much farther distance of 86.49 ± 10.33 Mly (26.517 ± 3.166 Mpc).[2] It was discovered by German-British astronomer William Herschel on 15 October 1784.[3]
Right ascension22h 00m 41.2099s[1]
Declination+17° 44′ 16.638″[1]
| NGC 7177 | |
|---|---|
NGC 7177 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Pegasus |
| Right ascension | 22h 00m 41.2099s[1] |
| Declination | +17° 44′ 16.638″[1] |
| Redshift | 0.003833[1] |
| Heliocentric radial velocity | 1,149±1 km/s[1] |
| Distance | 38.6 ± 2.9 Mly (11.82 ± 0.90 Mpc)[1] |
| Apparent magnitude (V) | 11.2[1] |
| Characteristics | |
| Type | SAB(r)b[1] |
| Size | ~88,100 ly (27.00 kpc) (estimated)[1] |
| Apparent size (V) | 3.2′ × 2.1′[1] |
| Other designations | |
| UGC 11872, MCG +03-56-003, PGC 67823, CGCG 451-002[1] | |
The SIMBAD database lists NGC 7177 as a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[4]
Supernovae
Two supernovae have been observed in NGC 7177:
- SN 1960L (type unknown, mag. 16) was discovered by Milton Humason on 14 August 1960.[5][6]
- SN 1976E (type unknown, mag. 16.5) was discovered by Justus R. Dunlap of the Corralitos Observatory at Northwestern University on 23 September 1976.[7][8]
