| NGC 4722 | |
|---|---|
 Lenticular galaxy NGC 4722 | |
| Observation data (J2000epoch) | |
| Constellation | Corvus |
| Right ascension | 12h 51m 32.3681s[1] |
| Declination | −13° 19′ 47.993″[1] |
| Redshift | 0.004376[1] |
| Heliocentric radial velocity | 1312 ± 9 km/s[1] |
| Distance | 79.3 ± 5.7 Mly (24.30 ± 1.75 Mpc)[1] |
| Group orcluster | NGC 4699 Group |
| Apparent magnitude (V) | 12.8[1] |
| Characteristics | |
| Type | SB0/a(r)[1] |
| Size | ~59,200 ly (18.15 kpc) (estimated)[1] |
| Apparent size (V) | 1.8′ × 0.7′[1] |
| Other designations | |
| IRAS 12488-1303,2MASX J12513239-1319482,IC 3833,MCG -02-33-031,PGC 43560[1] | |
NGC 4722 is alenticular galaxy in theconstellation ofCorvus. Its velocity with respect to thecosmic microwave background is 1647 ± 25 km/s, which corresponds to aHubble distance of 79.3 ± 5.7 Mly (24.3 ± 1.75 Mpc).[1] In addition, twonon-redshift measurements give a distance of 89.2 ± 39.3 Mly (27.35 ± 12.05 Mpc).[2] It was discovered byGerman astronomerWilhelm Tempel in 1882.[3] It was also observed byFrench astronomerGuillaume Bigourdan on 15 April 1895 and listed in theIndex Catalogue as IC 3833.[3]
NGC 4722 andNGC 4723 are listed together asHolm 471 inErik Holmberg'sA Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[4]
According to A.M. Garcia, NGC 4722 is part ofNGC 4699 Group (also known asLGG 307), which contains at least 15 galaxies, includingNGC 4699,NGC 4700,NGC 4742,NGC 4781,NGC 4790,NGC 4802, andNGC 4818.[5]
The NGC 4699 group is part of theVirgo II cluster, a cluster located at the southern boundary of theVirgo Cluster.[6] This cluster is part of theVirgo Supercluster.
Onesupernova has been observed in NGC 4722: SN 2024ablh (type II, mag. 17.17) was discovered by theAutomatic Learning for the Rapid Classification of Events (ALeRCE) on 18 November 2024.[7]
Media related toNGC 4722 at Wikimedia Commons
