NGC 7300
Galaxy in the constellation Aquarius
From Wikipedia, the free encyclopedia
NGC 7300 is an intermediate spiral galaxy in the constellation of Aquarius. Its velocity with respect to the cosmic microwave background is 4,566±24 km/s, which corresponds to a Hubble distance of 219.7 ± 15.4 Mly (67.35 ± 4.73 Mpc).[1] However, 15 non-redshift measurements give a closer mean distance of 181.89 ± 10.31 Mly (55.767 ± 3.162 Mpc).[2] It was discovered by British astronomer John Herschel on 26 July 1830.[3]
Right ascension22h 30m 59.9137s[1]
Declination−14° 00′ 12.631″[1]
| NGC 7300 | |
|---|---|
NGC 7300 imaged by Legacy Surveys | |
| Observation data (J2000 epoch) | |
| Constellation | Aquarius |
| Right ascension | 22h 30m 59.9137s[1] |
| Declination | −14° 00′ 12.631″[1] |
| Redshift | 0.016368±0.0000140[1] |
| Heliocentric radial velocity | 4,907±4 km/s[1] |
| Distance | 181.89 ± 10.31 Mly (55.767 ± 3.162 Mpc)[1] |
| Group or cluster | NGC 7300 group (LGG 458) |
| Apparent magnitude (V) | 13.6[1] |
| Characteristics | |
| Type | SAB(rs)b[1] |
| Size | ~118,100 ly (36.20 kpc) (estimated)[1] |
| Apparent size (V) | 2.0′ × 1.0′[1] |
| Other designations | |
| IRAS F22283-1415, 2MASS J22305979-1400103, IC 5204, MCG -02-57-011, PGC 69040[1] | |
NGC 7300 group
NGC 7300 is the namesake of a small group of galaxies. The other galaxies in the NGC 7300 group (also known as LGG 458) are NGC 7251, NGC 7298, MCG -03-57-001, and MCG -03-57-008.[4][5]
Supernovae
Two supernovae have been observed in NGC 7300:
- SN 1996ca (Type Ia, mag. 16.5) was discovered by Masakatsu Aoki on 15 December 1996.[6][7]
- SN 2015au (Type IIb, mag. 17.7) was discovered by Greg Bock as part of the Backyard Observatory Supernova Search (BOSS) on 10 November 2015.[8][9]
