NGC 3971
Galaxy NGC 3971 / NGC 3984 |
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SDSS recording | |
AladinLite | |
Constellation | Big Bear |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 11 h 55 m 36.4 s |
declination | + 29 ° 59 ′ 45 ″ |
Appearance | |
Morphological type | S0 |
Brightness (visual) | 12.8 mag |
Brightness (B-band) | 13.8 mag |
Angular expansion | 1.4 ′ × 1.2 ′ |
Position angle | 30 ° |
Surface brightness | 13.2 mag / arcmin² |
Physical data | |
Redshift | 0.022489 +/- 0.000173 |
Radial velocity | 6742 +/- 52 km / s |
Stroke distance v rad / H 0 |
(301 ± 21) x 10 6 ly (92.2 ± 6.5) Mpc |
history | |
discovery | Wilhelm Herschel |
Discovery date | February 3, 1788 |
Catalog names | |
NGC 3971/3984 • UGC 6899 • PGC 37443 • CGCG 157-054 • MCG + 05-28-047 • 2MASX J11553641 + 2959452 • GC 2624 • H II 724 • h 1019 • |
NGC 3971 = NGC 3984 is a lenticular galaxy of the Hubble type S0 in the constellation Great Bear in the northern sky . It is estimated to be 301 million light years from the Milky Way .
The object was discovered on February 3, 1788 by the astronomer Wilhelm Herschel .