| Messier 60 | |
|---|---|
M60 by Hubble Space Telescope; 3.33′ view |
|
| Observation data (J2000 epoch) | |
| Constellation | Virgo[1] |
| Right ascension | 12h 43m 39.6s[2] |
| Declination | +11° 33′ 09″[2] |
| Redshift | 0.003726[2] |
| Helio radial velocity | 1117 ± 6 km/s[2] |
| Distance | 55 ± 4 Mly (16.8 ± 1.2 Mpc)[3] |
| Type | E2[2] |
| Apparent dimensions (V) | 7′.4 × 6′.0[2] |
| Apparent magnitude (V) | 9.8[2] |
| Other designations | |
| M60, NGC 4649,[2] UGC 7898,[2] PGC 42831[2] Arp 116[2] | |
| See also: Galaxy, List of galaxies | |
Messier 60 (also known as NGC 4649) is an elliptical galaxy approximately 55 million light-years away[3] in the constellation Virgo.
Contents |
Messier 60 and the nearby galaxy Messier 59 were both discovered by Johann Gottfried Koehler in April 1779 during observations of a comet in the same part of the sky.[4] Charles Messier listed both in the Messier Catalogue about three days after Koehler's discovery.[4]
NGC 4647 appears approximately 2′.5 away from Messier 60; the optical disks of the two galaxies overlap. Although this overlap suggests that the galaxies are interacting, photographic images of the two galaxies do not reveal any evidence for gravitational interactions between the two galaxies as would be suggested if the two galaxies were physically close to each other.[5] This suggests that the galaxies are at different distances and are only weakly interacting if at all.[5]
M60 is the third-brightest giant elliptical galaxy of the Virgo cluster of galaxies, and is the dominant member of a subcluster of four galaxies, which is the closest-known isolated compact group of galaxies.
A supernova (SN 2004W) was observed in Messier 60.[6]
At the center of M60 is a black hole of 4.5 billion solar masses, one of the largest ever found.[7]
|
||||||||||||||||||||||
|
|||||||||||