4C +30.31
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Right ascension17h 00m 45.23s[1]
Declination+30° 08′ 12.99″[1]
| 4C +30.31 | |
|---|---|
 SDSS image of 4C +30.31 | |
| Observation data (J2000 epoch) | |
| Constellation | Hercules |
| Right ascension | 17h 00m 45.23s[1] |
| Declination | +30° 08′ 12.99″[1] |
| Redshift | 0.034424[1] |
| Heliocentric radial velocity | 10320 ± 250 km/s[1] |
| Distance | 519.8 ± 40.2 Mly (159.37 ± 12.32 Mpc)[1] |
| magnitude (H) | 11.59[1] |
| Characteristics | |
| Type | WLRG LINER[1] |
| Size | ~237,000 ly (72.6 kpc) (estimated)[1] |
| Other designations | |
| B2 1658+30, PGC 59420, 2MASX J17004523+3008129, NSA 147601, TXS 1658+302[1] | |
4C +30.31 known as B2 1658+30, is a radio galaxy located in the constellation of Hercules. The redshift of the object is (z) 0.034,[1] and it was first discovered from a sample of 490 astronomical radio sources by E.T. Olsen in August 1967.[2] In October 1972, this would be identified with an elliptical galaxy counterpart.[3]
