NGC 6389
Galaxy in the constellation Hercules
From Wikipedia, the free encyclopedia
NGC 6389 is a spiral galaxy in the constellation of Hercules. Its velocity with respect to the cosmic microwave background is 3,071±3 km/s, which corresponds to a Hubble distance of 147.7 ± 10.3 Mly (45.29 ± 3.17 Mpc).[1] However, five non-redshift measurements give a farther mean distance of 163.60 ± 27.49 Mly (50.160 ± 8.428 Mpc).[2] It was discovered by German-British astronomer William Herschel on 29 June 1799.[3][4]
| NGC 6389 | |
|---|---|
NGC 6389 imaged by Pan-STARRS | |
| Observation data (J2000 epoch) | |
| Constellation | Hercules |
| Right ascension | 17h 32m 39.7745s[1] |
| Declination | +16° 24′ 06.604″[1] |
| Redshift | 0.010392±0.00000100[1] |
| Heliocentric radial velocity | 3,115±0 km/s[1] |
| Distance | 163.60 ± 27.49 Mly (50.160 ± 8.428 Mpc)[1] |
| Apparent magnitude (V) | 12.82[1] |
| Characteristics | |
| Type | Sbc[1] |
| Size | ~152,300 ly (46.69 kpc) (estimated)[1] |
| Apparent size (V) | 2.8′ × 1.9′[1] |
| Other designations | |
| IRAS 17304+1626, UGC 10893, MCG +03-45-001, PGC 60466, CGCG 112-005[1] | |
NGC 6389 is an active galaxy nucleus candidate, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[5]
Supernovae
Two supernovae have been observed in NGC 6389:
