NGC 5011

NGC 5011
Observation data (J2000 epoch)
Constellation Centaurus
Right ascension 13h 12m 51.848s[1]
Declination −43° 05′ 46.25″[1]
Redshift 0.010537[2]
Helio radial velocity 3159 km/s[2]
Distance 133.26 ± 18.56 Mly (40.857 ± 5.692 Mpc)[2]
Apparent magnitude (V) 11.33[3]
Apparent magnitude (B) 12.14[3]
Characteristics
Type E1-2[2]
Size 92,800 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]

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]

Optical companions

HST image of NGC 5011B (right) and NGC 5011C (left).

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. 1 2 3 Skrutskie, M. (2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708.
  2. 1 2 3 4 5 6 "NED results for object NGC 5011". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 6 September 2017.
  3. 1 2 3 "NGC 5011". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 September 2017.
  4. 1 2 "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. 1 2 3 4 "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. 1 2 2MASS KS values used.
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