Astronomy:NGC 840
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Short description: Barred spiral galaxy in the constellation Cetus
| NGC 840 | |
|---|---|
 SDSS image of NGC 840 | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus |
| Right ascension | 02h 10m 16.21932s[1] |
| Declination | +07° 50′ 43.4000″[1] |
| Redshift | 0.024143[2] |
| Helio radial velocity | 7151 km/s[2] |
| Distance | 303.0 Mly (92.90 Mpc)[3] |
| Apparent magnitude (V) | 13.42[4] |
| Apparent magnitude (B) | 14.30[4] |
| Characteristics | |
| Type | SB(r)b[5] |
| Other designations | |
| UGC 1664, MCG+01-06-049, PGC 8293[2] | |
NGC 840 is a barred spiral galaxy in the constellation Cetus south of the ecliptic. It is estimated to be about 300 million light-years from the Milky Way[3] and has a diameter of approximately 175,000 ly.[6][7][8]
See also
References
- ↑ 1.0 1.1 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.
- ↑ 2.0 2.1 2.2 "NGC 840". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+840.
- ↑ 3.0 3.1 Tully, R. Brent; Courtois, Hélène M.; Sorce, Jenny G. (2016). "Cosmicflows-3". The Astronomical Journal 152 (2): 21. doi:10.3847/0004-6256/152/2/50. 50. Bibcode: 2016AJ....152...50T.
- ↑ 4.0 4.1 "Search specification: NGC 840". HyperLeda. Université Claude Bernard Lyon 1. http://leda.univ-lyon1.fr/ledacat.cgi?o=NGC%20840.
- ↑ "Results for object NGC 0840 (NGC 840)". NASA/IPAC Extragalactic Database. California Institute of Technology. https://ned.ipac.caltech.edu/byname?objname=NGC%20840&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1.
- ↑ Ford, Dominic. "The galaxy NGC 840 - In-The-Sky.org" (in en). https://in-the-sky.org/data/object.php?id=NGC840.
- ↑ "NGC 840". http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+840.
- ↑ "Revised NGC Data for NGC 840". http://spider.seds.org/ngc/revngcic.cgi?NGC840.
External links
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