NGC 3975
Galaxy NGC 3975 |
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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 53.7 s |
declination | + 60 ° 31 ′ 46 ″ |
Appearance | |
Morphological type | SAb? |
Brightness (visual) | 15.3 mag |
Brightness (B-band) | 16.1 mag |
Angular expansion | 0.7 ′ × 0.3 ′ |
Position angle | 95 ° |
Surface brightness | 13.5 mag / arcmin² |
Physical data | |
Redshift | 0.032934 +/- 0.000085 |
Radial velocity | 9873 +/- 25 km / s |
Stroke distance v rad / H 0 |
(446 ± 31) · 10 6 ly (136.6 ± 9.6) Mpc |
history | |
discovery | Lawrence Parsons |
Discovery date | February 21, 1874 |
Catalog names | |
NGC 3975 • PGC 37480 • MCG + 10-17-103 • 2MASX J11555367 + 6031461 • HOLM 306B |
NGC 3975 is a spiral galaxy of Hubble type Sb in the constellation Ursa Major at the northern sky . It is an estimated 446 million light years from the Milky Way .
The object was discovered on February 21, 1874 by the astronomer Lawrence Parsons, 4th Earl of Rosse .