NGC 7177
| NGC 7177 | |
|---|---|
 NGC 7177 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Pegasus |
| Right ascension | 22h 00m 41.2099s |
| Declination | +17° 44′ 16.638″ |
| Redshift | 0.003833 |
| Heliocentric radial velocity | 1,149±1 km/s |
| Distance | 38.6 ± 2.9 Mly (11.82 ± 0.90 Mpc) |
| Apparent magnitude (V) | 11.2 |
| Characteristics | |
| Type | SAB(r)b |
| Size | ~88,100 ly (27.00 kpc) (estimated) |
| Apparent size (V) | 3.2′ × 2.1′ |
| Other designations | |
| UGC 11872, MCG +03-56-003, PGC 67823, CGCG 451-002 | |
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). However, 12 non-redshift measurements give a much farther distance of 86.49 ± 10.33 Mly (26.517 ± 3.166 Mpc). It was discovered by German-British astronomer William Herschel on 15 October 1784.
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.
Supernovae
Two supernovae have been observed in NGC 7177:
- SN 1960L (type unknown, mag. 16) was discovered by Milton Humason on 14 August 1960.
- SN 1976E (type unknown, mag. 16.5) was discovered by Justus R. Dunlap of the Corralitos Observatory at Northwestern University on 23 September 1976.
See also
References
- 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 7177". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 23 December 2024.
- ↑ "Distance Results for NGC 7177". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 23 December 2024.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 7177". Celestial Atlas. Retrieved 23 December 2024.
- ↑ "NGC 7177". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 December 2024.
- ↑ Humason, M. L.; Gomes, Alercio M.; Kearns, C. E. (1961). "The 1960 Palomar Supernova Search". Publications of the Astronomical Society of the Pacific. 73 (432): 175. Bibcode:1961PASP...73..175H. doi:10.1086/127650.
- ↑ "SN 1960L". Transient Name Server. IAU. Retrieved 23 December 2024.
- ↑ Dunlap, J. R. (1976). "Supernova in NGC 7177". International Astronomical Union Circular (2991): 1. Bibcode:1976IAUC.2991....1D.
- ↑ "SN 1976E". Transient Name Server. IAU. Retrieved 23 December 2024.
External links
Media related to NGC 7177 at Wikimedia Commons- NGC 7177 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
