NGC 5784
Galaxy in the constellation Boötes
From Wikipedia, the free encyclopedia
NGC 5784 is a lenticular galaxy in the constellation of Boötes. Its velocity with respect to the cosmic microwave background is 5493 ± 18 km/s, which corresponds to a Hubble distance of 81.01 ± 5.68 Mpc (~264 million light-years).[1] It was discovered by German-British astronomer William Herschel on 9 April 1787.[2]
Right ascension14h 54m 16.4726s[1]
Declination+42° 33′ 28.356″[1]
| NGC 5784 | |
|---|---|
NGC 5784 imaged by Sloan Digital Sky Survey | |
| Observation data (J2000 epoch) | |
| Constellation | Boötes |
| Right ascension | 14h 54m 16.4726s[1] |
| Declination | +42° 33′ 28.356″[1] |
| Redshift | 0.017912[1] |
| Heliocentric radial velocity | 5370 ± 16 km/s[1] |
| Distance | 264.2 ± 18.5 Mly (81.01 ± 5.68 Mpc)[1] |
| Apparent magnitude (V) | 12.4[1] |
| Characteristics | |
| Type | S0[1] |
| Size | ~149,400 ly (45.82 kpc) (estimated)[1] |
| Apparent size (V) | 1.9′ × 1.8′[1] |
| Other designations | |
| IRAS 14524+4245, 2MASX J14541645+4233279, UGC 9592, MCG +07-31-006, PGC 53265, CGCG 221-009[1] | |
NGC 5739 Group
Supernovae
Two supernovae have been observed in NGC 5784:
- SN 2018mef (Type Ia, mag. 17.52) was discovered by the Zwicky Transient Facility on 7 June 2018.[4]
- SN 2023bch (Type Ia, mag. 15.4) was discovered by ASAS-SN on 30 January 2023.[5]
