| NGC 861 | |
|---|---|
 Pan-STARRS image of NGC 861 | |
| Observation data (J2000 epoch) | |
| Constellation | Triangulum |
| Right ascension | 02h 15m 51.146s[1] |
| Declination | +35° 54′ 48.89″[1] |
| Redshift | 0.027249[2] |
| Heliocentric radial velocity | 8058 km/s[2] |
| Distance | 360.7 Mly (110.59 Mpc)[3] |
| Apparent magnitude (B) | 14.8[2] |
| Characteristics | |
| Type | Sb[2] |
| Other designations | |
| UGC 1737, MCG +06-06-003, PGC 8652[2] | |
NGC 861 is a spiral galaxy in the constellation Triangulum. It is estimated to be 360 million light-years from the Milky Way[3] and has a diameter of approximately 165,000 light-years. The object was discovered on September 18, 1865 by Heinrich d'Arrest.[4][5][6]
- ^ a b Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
- ^ a b c d e "NGC 861". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-05-25.
- ^ a b Crook, Aidan C.; Huchra, John P.; Martimbeau, Nathalie; Masters, Karen L.; Jarrett, Tom; Macri, Lucas M. (2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal. 655 (2): 790–813. arXiv:astro-ph/0610732. Bibcode:2007ApJ...655..790C. doi:10.1086/510201. S2CID 11672751.
- ^ Ford, Dominic. "The galaxy NGC 861 - In-The-Sky.org". in-the-sky.org. Retrieved 2020-04-26.
- ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2020-04-26.
- ^ "Revised NGC Data for NGC 861". spider.seds.org. Retrieved 2020-04-26.