NGC 2683

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NGC 2683
NGC 2683 Spiral galaxy.jpg
NGC 2683 spiral galaxy
Observation data (J2000 epoch)
Constellation Lynx
Right ascension 08h 52m 41.3s[1]
Declination +33° 25′ 19″[1]
Redshift 411 ± 1 km/s[1]
Distance 25 ± 4 Mly (7.7 ± 1.3 Mpc)[2]
Apparent magnitude (V) 10.6[1]
Type SA(rs)b[1]
Apparent size (V) 9′.3 × 2′.2[1]
Other designations
UGC 4641,[1] PGC 24930[1]
See also: Galaxy, List of galaxies

NGC 2683 is a field spiral galaxy discovered by William Herschel on February 5, 1788. It was nicknamed the "UFO Galaxy" by the Astronaut Memorial Planetarium and Observatory.[3][4] It is viewed nearly edge-on from Earth's location in space and is located between 16 and 25 million light-years away. It is receding from Earth at 410 km/s (250 mi/s), and from the Galactic Center at 375 km/s (233 mi/s).[3] The reddened light from the center of the galaxy appears yellowish due to the intervening gas and dust located within the outer arms of NGC 2683.[5]


While usually considered an unbarred spiral galaxy, recent research suggests it may in fact be a barred spiral galaxy; its bar is hard to see due to its high inclination.[6]

It is also both smaller and less luminous than the Milky Way with very little neutral hydrogen[7][8] or molecular hydrogen[8] and a low luminosity in the infrared, which suggests a currently low rate of star formation.[9]

NGC 2683 is rich in globular clusters, hosting about 300 of them, twice the number found in the Milky Way.[10]


  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 2683. Retrieved 25 November 2006. 
  2. ^ J. L. Tonry; A. Dressler; J. P. Blakeslee; E. A. Ajhar; et al. (2001). "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances". Astrophysical Journal. 546 (2): 681–693. arXiv:astro-ph/0011223Freely accessible. Bibcode:2001ApJ...546..681T. doi:10.1086/318301. 
  3. ^ a b "NGC 2683". NGC Online. SEDS. Retrieved 4 February 2014. 
  4. ^ Materne, J. (April 1979). "The structure of nearby groups of galaxies - Quantitative membership probabilities". Astronomy and Astrophysics. 74 (2): 235–243. Bibcode:1979A&A....74..235M. 
  5. ^ Matthews, Doug; Block, Adam (15 November 2004). "Best of AOP: NGC 2683". Retrieved 12 October 2010. 
  6. ^ Kuzio de Naray, Rachel; Zagursky, Matthew J.; McGaugh, Stacy S. (2009). "Kinematic and Photometric Evidence for a Bar in NGC 2683". The Astronomical Journal. 138 (4): 1082–1089. arXiv:0908.0741Freely accessible. Bibcode:2009AJ....138.1082K. doi:10.1088/0004-6256/138/4/1082. 
  7. ^ Karachentsev, Igor D.; Karachentseva, Valentina E.; Huchtmeier, Walter K.; Makarov, Dmitry I. (2003). "A Catalog of Neighboring Galaxies". The Astronomical Journal. 127 (4): 2031–2068. Bibcode:2004AJ....127.2031K. doi:10.1086/382905. 
  8. ^ a b "A new catalogue of ISM content in normal galaxies". Retrieved 2012-12-25. 
  9. ^ Pompei, E.; Terndrup, D. M. (1998). David R. Merritt; Monica Valluri; J. A. Sellwood, eds. "The Stellar and Gaseous Kinematics of NGC 2683". Galaxy Dynamics, proceedings of a conference held at Rutgers University, 8-12 Aug 1998. ASP Conference Series (San Francisco: ASP). 182. Bibcode:1999ASPC..182..221P. 
  10. ^ "Globular Cluster Systems in Galaxies Beyond the Local Grup". NASA-IPAC Extragalactic Database (NED). Retrieved 2012-07-21. 

External links[edit]

Coordinates: Sky map 08h 52m 41.3s, +33° 25′ 19″