16h15m32.8s, −60° 54′30″| Norma Cluster | |
|---|---|
Centre of Norma Cluster with Milky Way stars in the foreground. Giant galaxies ESO 137-8 and ESO 137-6 are visible to the left.
| |
| Observation data (Epoch J2000) | |
| Constellation(s) | Norma, Triangulum Australe |
| Right ascension | 16h15m 32.8s[1] |
| Declination | −60° 54′ 30″[1] |
| Richness class | 1[2] |
| Bautz–Morgan classification | I[2] |
| Redshift | 0.01570 (4 707 km/s)[1] |
| Distance | 67.8 Mpc (221.1 Mly) h−1 0.705 [1] |
| Binding mass | 1015[3] M☉ |
| X-ray flux | 10 mCrab[3] |
| Other designations | |
| Abell 3627, ACO 3627[1] | |
| See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters | |
The Norma Cluster (ACO 3627orAbell 3627) is a rich cluster of galaxies located near the center of the Great Attractor; it is about 68 Mpc (222 Mly) distant.[4][5] Although it is both nearby and bright, it is difficult to observe because it is located in the Zone of Avoidance, a region near the plane of the Milky Way. Consequently, the cluster is severely obscuredbyinterstellar dust at optical wavelengths. Its mass is estimated to be on the order of 1015 solar masses.[3]
ESO 137-001, an example of a jellyfish galaxy, is located in Abell 3627.[6]
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