NGC 4749
| Galaxy NGC 4749 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Dragon |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 51 m 12.0 s |
| declination | + 71 ° 38 ′ 12 ″ |
| Appearance | |
| Morphological type | Sb? sp |
| Brightness (visual) | 13.5 likes |
| Brightness (B-band) | 14.3 mag |
| Angular expansion | 1.7 ′ × 0.3 ′ |
| Position angle | 158 ° |
| Surface brightness | 12.6 mag / arcmin² |
| Physical data | |
| Affiliation |
NGC 4750 group LGG 303 |
| Redshift | 0.005634 ± 0.000040 |
| Radial velocity | 1689 ± 12 km / s |
|
Stroke distance v rad / H 0 |
(82 ± 6) · 10 6 ly (25.0 ± 1.8) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 7, 1793 |
| Catalog names | |
| NGC 4749 • UGC 8006 • PGC 43527 • CGCG 335-026 • MCG + 12-12-020 • IRAS 12493 + 7154 • 2MASX J12511200 + 7138124 • GC 3268 • H III 907 • NVSS J125112 + 713808 • LDCE 902 NED013 | |
NGC 4749 is a 13.5 likes bright spiral galaxy of Hubble type Sb in the constellation Draco the northern sky . It is estimated to be 82 million light-years from the Milky Way and about 40,000 light-years across.
The object was discovered on April 7, 1793 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as “vF, E np-sf, 1.5 ′ long, 0.5 ′ broad”.