NGC 721

NGC 721
Pan-STARRS image of NGC 721
Observation data (J2000 epoch)
Constellation	Andromeda
Right ascension	01h 54m 45.45687s [1]
Declination	+39° 23′ 00.7702″ [1]
Redshift	0.018566 [2]
Heliocentric radial velocity	5514 km/s [2]
Distance	182.6  Mly (55.98  Mpc) [3]
Apparent magnitude  (B)	13.8 [2]
Characteristics
Type	SB(rs)bc [4]
Other designations
UGC 1376, MCG 06-05-043, PGC 7097 [2]

NGC 721 is a barred spiral galaxy located in the constellation Andromeda about 250 million light years from the Milky Way. It was discovered by the Prussian astronomer Heinrich d'Arrest in 1862. ^{[5] [6] [7]}

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 721". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2020-05-20.
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. "Results for object NGC 0721 (NGC 721)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2020-05-24.
5. Ford, Dominic. "The galaxy NGC 721 - In-The-Sky.org". in-the-sky.org. Retrieved 2020-04-09.
6. "Revised NGC Data for NGC 721". spider.seds.org. Retrieved 2020-04-09.
7. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2020-04-09.