NGC 4549
| Galaxy NGC 4549 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Big Bear |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 35 m 21.3 s |
| declination | + 58 ° 56 ′ 59 ″ |
| Appearance | |
| Morphological type | Sb |
| Brightness (visual) | 15.2 mag |
| Brightness (B-band) | 16.0 mag |
| Angular expansion | 0.4 ′ × 0.2 ′ |
| Position angle | 100 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Redshift | 0.045121 ± 0.000167 |
| Radial velocity | (13527 ± 50) km / s |
|
Stroke distance v rad / H 0 |
(609 ± 43) · 10 6 ly (186.7 ± 13.1) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 24, 1789 |
| Catalog names | |
| NGC 4549 • PGC 41954 • MCG + 10-18-072 • 2MASX J12352123 + 5856592 • GC 3094 • H III 807 • h 1347 • | |
NGC 4549 is a spiral galaxy of Hubble type Sb in the constellation Ursa Major at the northern sky . It is estimated to be 609 million light years from the Milky Way .
The object was discovered on April 24, 1789 by Wilhelm Herschel with an 18-inch reflector telescope.