| NGC 5251 | |
| Constellation Name: | Boötes |
| Epoch: | J2000 |
| Type: | S?[1] |
| Dist Ly: | NaNMpc |
| Z: | 0.036558 |
| H Radial V: | 10960 ± 3 km/s |
| Appmag V: | 13.9 |
| Size V: | 0.7' x 0.7' |
| Size: | ~56.14kpc (estimated) |
NGC 5251 is a barred spiral galaxy in the constellation of Boötes. Its velocity with respect to the cosmic microwave background is 11202 ± 17 km/s, which corresponds to a Hubble distance of 165.22 ± 11.57 Mpc (∼539 million light-years). It was discovered by German-British astronomer William Herschel on 11 April 1785.[2]
The SIMBAD database lists NGC 5251 as a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[3]
One supernova has been observed in NGC 5251: SN 2024bci (type Ia, mag. 18.8).[4]