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Elliptical galaxy in the constellation Virgo From Wikipedia, the free encyclopedia
NGC 4697 (also known as Caldwell 52) is an elliptical galaxy some 40 to 50 million light-years away in the constellation Virgo. It is a member of the NGC 4697 Group, a group of galaxies also containing NGC 4731 and several generally much smaller galaxies.[3] This group is about 55 million light-years away; it is one of the many Virgo II Groups, which form a southern extension of the Virgo Supercluster of galaxies.[3]
| NGC 4697 | |
|---|---|
NGC 4697 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 48m 35.9s[1] |
| Declination | −05° 48′ 03″[1] |
| Redshift | 1241 ± 1 km/s[1] |
| Distance | ~ 38 Mly[1] / ~ 50 Mly[2] |
| Apparent magnitude (V) | 10.97[1] |
| Characteristics | |
| Type | E6[1] |
| Apparent size (V) | 4.4′ × 2.8′[2] |
| Other designations | |
| Caldwell 52, UGCA 300, MCG -01-33-010, PGC 043276[1] | |
The distance to NGC 4697 is not known with high precision: measurements vary from 28 to 76 million light-years.[1] According to the NASA Extra-galactic Database, the average is about 38 million light-years;[1] according to SIMBAD, about 50 million light-years.[2]
The supermassive black hole at the core of NGC 4697 has a mass of 1.3+0.18
−0.17×108 M☉ as measured from Atacama Large Millimeter Array observations of the rotation of the central gas disk.[4]
One supernova has been observed in NGC 4697: SN 2018imd (type Ia, mag. 15.5).[5]
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