NGC 5493
Galaxy in the constellation Virgo
From Wikipedia, the free encyclopedia
NGC 5493 is a peculiar lenticular galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 2,929±19 km/s, which corresponds to a Hubble distance of 140.9 ± 9.9 Mly (43.20 ± 3.04 Mpc).[1] However, three non-redshift measurements give a much closer mean distance of 64.73 ± 31.32 Mly (19.847 ± 9.602 Mpc).[2] It was discovered by German-British astronomer William Herschel on 22 February 1787.[3][4]
| NGC 5493 | |
|---|---|
NGC 5493 imaged by Legacy Surveys | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 14h 11m 29.3824s[1] |
| Declination | −05° 02′ 37.090″[1] |
| Redshift | 0.008889±0.0000170[1] |
| Heliocentric radial velocity | 2,665±5 km/s[1] |
| Distance | 64.73 ± 31.32 Mly (19.847 ± 9.602 Mpc)[1] |
| Group or cluster | NGC 5427 group (LGG 374) |
| Apparent magnitude (V) | 12.27[1] |
| Characteristics | |
| Type | S0 pec edge-on[1] |
| Size | ~41,100 ly (12.60 kpc) (estimated)[1] |
| Apparent size (V) | 1.6′ × 1.3′[1] |
| Other designations | |
| 2MASX J14112938-0502371, UGCA 386, MCG -01-36-013, PGC 50670[1] | |
NGC 5493 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[5][6]
NGC 5427 group
Supernova
One supernova has been observed in NGC 5493:
- SN 1990M (Type Ia, mag. 13.5) was discovered by Robert Evans on 15 June 1990.[9][10]