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Messier Index/M105

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Messier 105 (also known as M105 and NGC 3379) is an w:elliptical galaxy in the w:constellation Leo. Messier 105 is known to have a w:supermassive black hole.

Messier 105
Messier 105.jpg
M105, as viewed by the HST;
Credit: w:NASA/w:ESA
Observation data (w:J2000 epoch)
Constellation Leo
Right ascension 10h 47m 49.6s[1]
Declination +12° 34′ 54″[1]
Redshift 911 ± 2 km/s[1]
Distance 32.0 ± 1.6 Mly (9.8 ± 0.5 Mpc)[2]
Type E1[1]
Apparent dimensions (V) 5′.4 × 4′.8[1]
Apparent magnitude (V) 10.2[1]
Other designations
NGC 3379,[1] UGC 5902,[1] PGC 32256[1]



Messier 105 was discovered by w:Pierre Méchain on 24 March w:1781, just a few days after he discovered the nearby galaxies w:Messier 95 and w:Messier 96.[3] This galaxy is one of several that were not originally included in the original w:Messier Catalogue compiled by w:Charles Messier. Messier 105 was included in the catalog only when w:Helen S. Hogg found a letter by Méchain describing Messier 105 and when the object described by Méchain was identified as a galaxy previously named NGC 3379.[3]

Galaxy group information

Messier 105 is one of several galaxies within the w:M96 Group, a w:group of galaxies in the w:constellation Leo. The group also includes the w:Messier objects M95 and M96.[4][5][6][7]

External links


  1. a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for M105. Retrieved 2006-11-16. 
  2. Jensen, Joseph B.; Tonry, John L.; Barris, Brian J.; Thompson, Rodger I.; Liu, Michael C.; Rieke, Marcia J.; Ajhar, Edward A.; Blakeslee, John P. (February 2003). "Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations". Astrophysical Journal 583 (2): 712–726. doi:10.1086/345430. 
  3. a b K. G. Jones (1991). Messier's Nebulae and Star Clusters (2nd ed.). Cambridge: Cambridge University Press. ISBN 0-521-37079-5. 
  4. R. B. Tully (1988). Nearby Galaxies Catalog. Cambridge: Cambridge University Press. ISBN 0-521-35299-1. 
  5. P. Fouque, E. Gourgoulhon, P. Chamaraux, G. Paturel (1992). "Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members". Astronomy and Astrophysics Supplement 93: 211–233. 
  6. A. Garcia (1993). "General study of group membership. II - Determination of nearby groups". Astronomy and Astrophysics Supplement 100: 47–90. 
  7. G. Giuricin, C. Marinoni, L. Ceriani, A. Pisani (2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups". Astrophysical Journal 543: 178–194. doi:10.1086/317070.