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NGC 999 
Summary
NGC 999 is an intermediate spiral galaxy located in the constellation Andromeda about 195 million light-years from the Milky Way.[3] It was discovered by the French astronomer Edouard Stephan in 1871.[5]
| NGC 999 | |
|---|---|
 DSS image of NGC 999 | |
| Observation data (J2000 epoch) | |
| Constellation | Andromeda |
| Right ascension | 02h 38m 47.46177s[1] |
| Declination | +41° 40′ 13.6652″[1] |
| Redshift | 0.015097[2] |
| Heliocentric radial velocity | 4492 km/s[2] |
| Distance | 195.0 Mly (59.80 Mpc)[3] |
| Apparent magnitude (B) | 14.5[2] |
| Characteristics | |
| Type | (R')SAB(s)a[4] |
| Other designations | |
| IC 240, UGC 2127, MCG +07-06-047, PGC 10026[2] | |
See also edit
References edit
- ^ a b Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051.
- ^ a b c d "NGC 999". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-06-03.
- ^ 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.
- ^ "Results for object NGC 0999 (NGC 999)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2020-06-03.
- ^ "Revised NGC Data for NGC 999". spider.seds.org. Retrieved 2020-02-10.