Event type | Supernova remnant, astronomical radio source, astrophysical X-ray source |
---|---|
S | |
Constellation | Aquila |
Right ascension | 19h 11m 09s[1] |
Declination | +09° 06′ 24″[1] |
Epoch | J2000.0 |
Galactic coordinates | 043.275 -00.190 |
Distance | 10 kiloparsecs (33,000 ly)[2] |
Other designations | SNR G043.3-00.2, 1ES 1908+09.0, 3C 398, 3C 398.0, 4C 09.63, 3FHL J1911.0+0905, 3CR 398, AJG 95, 2FGL J1911.0+0905, 3FGL J1910.9+0906, 2FHL J1911.0+0905 |
W49B (also known as SNR G043.3-00.2 or 3C 398) is a nebula in Westerhout 49 (W49). The nebula is a supernova remnant, probably from a type Ib or Ic supernova that occurred around 1,000 years ago. It may have produced a gamma-ray burst and is thought to have left a black hole remnant.