NGC 3977
| Galaxy NGC 3977 / NGC 3980 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Big Bear |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 11 h 56 m 07.2 s |
| declination | + 55 ° 23 ′ 27 ″ |
| Appearance | |
| Morphological type | (R) SA (rs) from: |
| Brightness (visual) | 13.6 mag |
| Brightness (B-band) | 14.4 mag |
| Angular expansion | 1.5 ′ × 1.4 ′ |
| Position angle | 9 ° |
| Surface brightness | 14.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.019370 ± 0.000017 |
| Radial velocity | (5807 ± 5) km / s |
|
Stroke distance v rad / H 0 |
(263 ± 18) · 10 6 ly (80.6 ± 5.6) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | April 14, 1789 |
| Catalog names | |
| NGC 3977/3980 • UGC 6909 • PGC 37497 • CGCG 269-017 • MCG + 09-20-034 • 2MASX J11560714 + 5523263 • GC 2619 • H II 790 • LDCE 846 NED003 | |
NGC 3977 = NGC 3980 is a spiral galaxy of the Hubble type Sab in the constellation Great Bear in the northern sky . It is estimated to be 263 million light years away from the Milky Way and has a diameter of around 115,000 ly.
In the same area of the sky there are u. a. the galaxies NGC 3972 , NGC 3982 , NGC 3990 , NGC 3998 .
The object was discovered on April 14, 1789 by the German-British astronomer Wilhelm Herschel .