| NGC 4722 | |
|---|---|
 Lenticular galaxy NGC 4722 | |
| Observation data (J2000 epoch) | |
| 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 or cluster | 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 a lenticular galaxy in the constellation of Corvus. Its velocity with respect to the cosmic microwave background is 1647 ± 25 km/s, which corresponds to a Hubble distance of 79.3 ± 5.7 Mly (24.3 ± 1.75 Mpc).[1] In addition, two non-redshift measurements give a distance of 89.2 ± 39.3 Mly (27.35 ± 12.05 Mpc).[2] It was discovered by German astronomer Wilhelm Tempel in 1882.[3] It was also observed by French astronomer Guillaume Bigourdan on 15 April 1895 and listed in the Index Catalogue as IC 3833.[3]
NGC 4722 and NGC 4723 are listed together as Holm 471 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[4]
- ^ a b c d e f g h i j k "Results for object NGC 4722". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 23 November 2024.
- ^ "Distance Results for NGC 4722". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 23 November 2024.
- ^ a b Seligman, Courtney. "New General Catalogue Objects: NGC 4722". Celestial Atlas. Retrieved 23 November 2024.
- ^ Holmberg, Erik (1937). "A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems". Annals of the Observatory of Lund. 6: 1. Bibcode:1937AnLun...6....1H.