NGC 861

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]

NGC 861
DSS image of NGC 861
Observation data (J2000 epoch)
Constellation	Triangulum
Right ascension	02^h 15^m 51.146^s[1]
Declination	+35° 54′ 48.89″[1]
Redshift	0.027249[2]
Helio 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]

See also

• List of NGC objects (1–1000)

References

1. Skrutskie, M. (2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708.
2. "NGC 861". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-05-25.
3. 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.
4. Ford, Dominic. "The galaxy NGC 861 - In-The-Sky.org". in-the-sky.org. Retrieved 2020-04-26.
5. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2020-04-26.
6. "Revised NGC Data for NGC 861". spider.seds.org. Retrieved 2020-04-26.