NGC 5939
| NGC 5939 | |
|---|---|
 The spiral galaxy NGC 5939. | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Minor |
| Right ascension | 15h 24m 46.03s[1] |
| Declination | +68° 43′ 50.3″[1] |
| Redshift | 0.022235 [1] |
| Heliocentric radial velocity | 6666 ± 4 km/s[1] |
| Distance | 321.6 ± 22.5 Mly (98.59 ± 6.90 Mpc)[1] |
| Apparent magnitude (V) | 13.1[1] |
| Characteristics | |
| Type | S?[1] |
| Size | ~102,500 ly (31.44 kpc) (estimated)[1] |
| Apparent size (V) | 0.9' x 0.5'[1] |
| Other designations | |
| PGC 55022, UGC 9854, CGCG 338-008, MCG +12-15-007, IRAS 15244+6854, 2MASX J15244604+6843501[1] | |
NGC 5939 is a spiral galaxy in the constellation of Ursa Minor. Its velocity with respect to the cosmic microwave background is 6684 ± 4 km/s, which corresponds to a Hubble distance of 98.59 ± 6.90 Mpc (∼322 million light-years).[1] It was discovered by American astronomer Lewis Swift on 11 July 1883.[2]
Supernovae
[edit]Three supernovae have been observed in NGC 5939: SN 2004ax (type Ib/c, mag. 17.7),[3][4] SN 2019gss (type II, mag. 19.3),[5] and SN 2023gps (type Ia, mag. 20).[6]
NGC 5939 Group
[edit]NGC 5939 is part of a trio of galaxies: The other two galaxies in the group are IC 1129 and UGC 9896.[7]
See also
[edit]References
[edit]- ^ a b c d e f g h i j k "NASA/IPAC Extragalactic Database". Results for NGC 5939. Retrieved 10 August 2024.
- ^ Seligman, Courtney. "NGC 5939". Celestial Atlas. Retrieved 10 August 2024.
- ^ "Transient Name Server". Entry for SN 2004ax. Retrieved 10 August 2024.
- ^ Green, Daniel W. E. (April 24, 2004). "Central Bureau for Astronomical Telegrams". Circular No. 8331. Retrieved 8 August 2024.
- ^ "Transient Name Server". Entry for SN 2019gss. Retrieved 10 August 2024.
- ^ "Transient Name Server". Entry for SN 2023gps. Retrieved 10 August 2024.
- ^ Mahtessian, Abraham (July 1998). "Groups of galaxies. III. Some empirical characteristics" (PDF). Astrophysics. 41 #3: 308–321. doi:10.1007/BF03036100. Retrieved 10 August 2024.
External links
[edit]
Media related to NGC 5939 at Wikimedia Commons- NGC 5939 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
