NGC 840

NGC 840
SDSS image of NGC 840
Observation data (J2000 epoch)
Constellation	Cetus
Right ascension	02^h 10^m 16.21932^s[1]
Declination	+07° 50′ 43.4000″[1]
Redshift	0.024143[2]
Heliocentric 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

• List of NGC objects (1–1000)

References

1. 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.
2. "NGC 840". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-05-24.
3. Tully, R. Brent; Courtois, Hélène M.; Sorce, Jenny G. (2016). "Cosmicflows-3". The Astronomical Journal. 152 (2): 21. arXiv:1605.01765. Bibcode:2016AJ....152...50T. doi:10.3847/0004-6256/152/2/50. S2CID 250737862. 50.
4. "Search specification: NGC 840". HyperLeda. Université Claude Bernard Lyon 1. Retrieved 2020-05-24.
5. "Results for object NGC 0840 (NGC 840)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2020-05-24.
6. Ford, Dominic. "The galaxy NGC 840 - In-The-Sky.org". in-the-sky.org. Retrieved 2020-03-18.
7. "NGC 840". sim-basic. Retrieved 2020-03-18.
8. "Revised NGC Data for NGC 840". spider.seds.org. Retrieved 2020-03-18.

External links

• Media related to NGC 840 at Wikimedia Commons