NGC 7714
Galaxy in the constellation Pisces
From Wikipedia, the free encyclopedia
NGC 7714 is a spiral galaxy in the constellation Pisces. Its velocity with respect to the cosmic microwave background is 2430 ± 26 km/s, which corresponds to a Hubble distance of 116.9 ± 8.3 Mly (35.85 ± 2.54 Mpc).[2] In addition, five non-redshift measurements give a distance of 92.24 ± 8.69 Mly (28.280 ± 2.664 Mpc).[5] It was discovered by British astronomer John Herschel on 18 September 1830.[6]
| NGC 7714 | |
|---|---|
 NGC 7714 imaged by the Hubble Space Telescope[1] | |
| Observation data (J2000 epoch) | |
| Constellation | Pisces |
| Right ascension | 23h 36m 14.1232s[2] |
| Declination | +02° 09′ 18.133″[2] |
| Redshift | 0.009333[2] |
| Heliocentric radial velocity | 2798 ± 1 km/s[2] |
| Distance | 116.9 ± 8.3 Mly (35.85 ± 2.54 Mpc)[2] |
| Apparent magnitude (V) | 12.2 |
| Characteristics | |
| Type | SB:(s)b? pec,[3] HII[4] |
| Size | ~67,100 ly (20.57 kpc) (estimated)[2] |
| Apparent size (V) | 1.90 × 1.4 moa[4] |
| Other designations | |
| KCPG 587A, UM 167, HOLM 810A, IRAS 23336+0152, Arp 284, UGC 12699, MCG +00-60-017, Mrk 538, PGC 71868, CGCG 381-011, VV 51[2] | |
NGC 7714 and NGC 7715 are interacting galaxies.[4] The pair are included in Halton Arp's Atlas of Peculiar Galaxies, listed as Arp 284.[7] NGC 7714 appears to be a highly distorted spiral, possibly a barred spiral galaxy. NGC 7715 is of uncertain type, probably an edge-on spiral or an irregular galaxy.[3]
Supernovae
Three supernovae have been observed in NGC 7714:
- SN 1999dn (Type Ib/c, mag. 16.3) was discovered by the BAO Supernova Survey on 19 August 1999.[8][3][9]
- SN 2007fo (Type Ib/c, mag. 18.2) was discovered by the Lick Observatory Supernova Search on 9 July 2007.[10][11]
- SN 2023pso (Type Ib, mag. 17.15) was discovered by GOTO on 7 August 2023.[12]
