3C 371
Active galaxy in the constellation Draco
From Wikipedia, the free encyclopedia
3C 371 is a BL Lac object[1][2] located in the constellation Draco. With a redshift of 0.051,[2] this active galaxy is about 730 million light-years away.[3]
| 3C 371 | |
|---|---|
| |
| Observation data (Epoch J2000) | |
| Constellation | Draco |
| Right ascension | 18h 06m 50.681s[1] |
| Declination | +69° 49′ 28.11″[1] |
| Redshift | 0.051[1][2] |
| Distance | 730 million light-years 224 Mpc[3] |
| Type | BL Lac[1][2][3] FRI RG[4] |
| Apparent magnitude (V) | 14.4[2] ±1.5[5] |
| Other designations | |
| UGC 11130, PGC 61417, 2E 4023, 7C 180717.90+694858.00, QSO B1807+698[1] | |
| See also: Quasar, List of quasars | |
3C 371 is a well known object, first associated with the BL Lac class by Miller in 1975,[4] and is among the nearest and brightest BL Lacs.[4] Optical jet emission from 3C 371 was first detected in ground-based images by Nilsson et al. in 1997, and confirmed with HST (Scarpa et al.) in 1999.[4] The implied viewing angle may be less than 18 degrees.[4] But no superluminal motion has been detected, despite frequent monitoring by the Very Long Baseline Array (VLBA).[4]
There are photos of this object dating back to 1895, and they suggest that this objects magnitude can vary by ±1.5.[5]