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NGC 5011 is an elliptical galaxy in the constellation of Centaurus.[2] It was discovered on 3 June 1834 by John Herschel.[4] It was described as "pretty bright, considerably small, round, among 4 stars" by John Louis Emil Dreyer, the compiler of the New General Catalogue.[4]

NGC 5011
HST image of NGC 5011B (right) and NGC 5011C (left)
Observation data (J2000 epoch)
ConstellationCentaurus
Right ascension13h 12m 51.848s[1]
Declination−43° 05′ 46.25″[1]
Redshift0.010537[2]
Helio radial velocity3159 km/s[2]
Distance133.26 ± 18.56 Mly (40.857 ± 5.692 Mpc)[2]
Apparent magnitude (V)11.33[3]
Apparent magnitude (B)12.14[3]
Characteristics
TypeE1-2[2]
Size92,800 ly (28,440 pc)[2][note 1]
Apparent size (V)1.763′ × 1.552′[1][note 1]
Other designations
MGC-07-27-042, PGC 45898[3]

Optical companions


Several galaxies are not physically associated with NGC 5011, but appear close to NGC 5011 in the night sky. PGC 45847 is a spiral galaxy that is also known as NGC 5011A.[5] PGC 45918 is a lenticular galaxy[6] some 156 million light-years away from the Earth, in the Centaurus Cluster, and is designated NGC 5011B.[7] PGC 45917 is a dwarf galaxy, also designated NGC 5011C.[8][7] Although NGC 5011B and 5011C appear close together, they are no signs of them interacting.[7] NGC 5011C is actually much closer and is in the Centaurus A/M83 Group, at 13 million light years away.[7]


References


  1. Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131: 1163–1183. doi:10.1086/498708. ISSN 0004-6256.
  2. "NED results for object NGC 5011". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 6 September 2017.
  3. "NGC 5011". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 September 2017.
  4. "New General Catalog Objects: NGC 5000 - 5059". cseligman.com. Retrieved 6 September 2017.
  5. "LEDA 45847". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 September 2017.
  6. "LEDA 45848". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 September 2017.
  7. "Don't trust your eyes | ESA/Hubble". www.spacetelescope.org. 2012. Retrieved 6 September 2017.
  8. "LEDA 45917". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 September 2017.

Notes


  1. 2MASS KS values used.




На других языках

[de] NGC 5011

NGC 5011 ist eine 11,3 mag helle elliptische Galaxie vom Hubble-Typ E1 im Sternbild Zentaur, die etwa 134 Millionen Lichtjahre von der Milchstraße entfernt. Sie bildet zusammen mit den Nicht-NGC-Objekten PGC 45847 (auch NGC 5011 A genannt), PGC 45918 (NGC 5011 B) sowie PGC 45917 (NGC 5011 C) eine optische Galaxiengruppe und wurde am 3. Juni 1834 von John Herschel mit einem 18-Zoll-Spiegelteleskop entdeckt,[3] der sie dabei mit „pretty bright, pretty small, round, gradually brighter in the middle; 15 arcseconds; in a curve of 3 or 4 stars“ beschrieb. Bei einer zweiten Beobachtung notierte er „pretty bright, round, small, pretty gradually brighter in the middle; 12 arcseconds. In the middle of an arc of four stars“; seine dritte Notiz lautete „pretty faint, small, round. The middle object in an arc of stars“.[4]
- [en] NGC 5011

[ru] NGC 5011

NGC 5011 (другие обозначения — ESO 269-65, MCG -7-27-42, DCL 528, PGC 45898) — эллиптическая галактика (E1) в созвездии Центавр.


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