NGC 4697

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]

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]

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]

Gallery

• 
  NGC 4697 by the Sloan Digital Sky Survey
• 
  NGC 4697 from the Hubble Space Telescope.

References

External links

• Media related to NGC 4697 at Wikimedia Commons
• NGC 4697 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images