NGC 5875
Galaxy in the constellation Boötes
From Wikipedia, the free encyclopedia
NGC 5875 is a spiral galaxy in the constellation of Boötes. Its velocity with respect to the cosmic microwave background is 3585 ± 6 km/s, which corresponds to a Hubble distance of 52.87 ± 3.70 Mpc (~173 million light-years).[1] It was discovered by German-British astronomer William Herschel on 1 May 1788.[2]
Right ascension15h 09m 13.1946s[1]
Declination+52° 31′ 42.472″[1]
| NGC 5875 | |
|---|---|
NGC 5875 imaged by Sloan Digital Sky Survey | |
| Observation data (J2000 epoch) | |
| Constellation | Boötes |
| Right ascension | 15h 09m 13.1946s[1] |
| Declination | +52° 31′ 42.472″[1] |
| Redshift | 0.011695 [1] |
| Heliocentric radial velocity | 3506 ± 2 km/s[1] |
| Distance | 172.4 ± 12.1 Mly (52.87 ± 3.70 Mpc)[1] |
| Apparent magnitude (V) | 12.4[1] |
| Characteristics | |
| Type | SAb?[1] |
| Size | ~116,800 ly (35.80 kpc) (estimated)[1] |
| Apparent size (V) | 2.3′ × 1.2′[1] |
| Other designations | |
| IRAS 15077+5243, 2MASX J15091320+5231418, UGC 9745, MCG +09-25-027, PGC 54095, CGCG 274-027[1] | |
The SIMBAD database lists NGC 5875 as a Seyfert II Galaxy, i.e. it has a quasar-like nuclei with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[3]
Supernovae
Two supernovae have been observed in NGC 5875:
- SN 2022oqm (Type Ic-pec, mag. 17.3) was discovered by the Zwicky Transient Facility on 11 July 2022.[4] This supernova has been described as one of the brightest calcium-rich supernovae known.[5]
- SN 2023ldh (Type IIn, mag. 20.7423) was discovered by the Zwicky Transient Facility on 28 May 2023.[6]
