Hercules Cluster

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Hercules Cluster
VST image of the Hercules galaxy cluster.jpg
Observation data (Epoch J2000)
Constellation(s) Hercules
Right ascension 16h 05m 15.0s[1]
Declination +17° 44′ 55″[1]
Brightest member NGC 6050
Number of galaxies 300[2]
Richness class 2[3]
Bautz-Morgan classification III[3]
Redshift 0.03660 (10 972 km/s)[1]
156 Mpc (509 Mly) h−1
X-ray flux (15.00 ± 12.5%)×1012 erg s−1 cm−2 (0.1—2.4 keV) [1]
Other designations
Abell 2151
See also: Galaxy groups, Galaxy clusters, List of galaxy clusters

The Hercules Cluster (Abell 2151) is a cluster of about 200 galaxies[4] some 500 million light-years distant in the constellation Hercules. It is rich in spiral galaxies and shows many interacting galaxies.[5] The cluster is part of the larger Hercules Supercluster, which is itself part of the much larger Great Wall super-structure.[1]

See also[edit]

External links[edit]


  1. ^ a b c d e "NASA/IPAC Extragalactic Database". Results for Abell 2151. Retrieved 2007-07-19. 
  2. ^ "National Optical Astronomy Observatory". Galaxies. Retrieved 2007-07-19. 
  3. ^ a b Abell, George O.; Corwin, Harold G., Jr.; Olowin, Ronald P. (May 1989). "A catalog of rich clusters of galaxies" (PDF). Astrophysical Journal Supplement Series. 70 (May 1989): 1–138. Bibcode:1989ApJS...70....1A. ISSN 0067-0049. doi:10.1086/191333. Retrieved March 13, 2012. 
  4. ^ "Two Micron All Sky Survey". 2MASS Galaxy Science & Analysis. Archived from the original on 2007-06-30. Retrieved 2007-08-03. 
  5. ^ "University of Alabama Astronomy". Astronomical Image Galleries. Retrieved 2007-07-19. 

Coordinates: Sky map 16h 05m 15s, +17° 44′ 55″