NGC 3945
| Galaxy NGC 3945 |
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|---|---|
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|
| SDSS recording | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 11 h 53 m 13.7 s |
| declination | + 60 ° 40 ′ 32 ″ |
| Appearance | |
| Morphological type | SB (rs) 0+ / LINER |
| Brightness (visual) | 10.5 mag |
| Brightness (B-band) | 11.4 mag |
| Angular expansion | 5.2 ′ × 3.5 ′ |
| Position angle | 160 ° |
| Surface brightness | 13.5 mag / arcmin² |
| Physical data | |
| Redshift | 0.004273 ± 0.000017 |
| Radial velocity | (1281 ± 5) km / s |
|
Stroke distance v rad / H 0 |
(62 ± 4) · 10 6 ly (18.9 ± 1.3) Mpc |
| diameter | 90,000 ly |
| history | |
| discovery | William Herschel |
| Discovery date | March 19, 1790 |
| Catalog names | |
| NGC 3945 • UGC 6860 • PGC 37258 • CGCG 292-042 • MCG + 10-17-096 • IRAS 11506 + 6056 • 2MASX J11531372 + 6040320 • GC 2602 • H I 251 • h 1006 • GALEX ASC J115313.66 + 604033.8 • LDCE 867 NED046 | |
NGC 3945 is a lenticular galaxy with an active galaxy core of the Hubble type SB0 in the constellation Great Bear in the northern sky . It is an estimated 62 million light years away from the Milky Way and has a diameter of about 90,000 ly.
In the same area of the sky are the galaxies NGC 3975 and NGC 3978 .
The object was discovered on March 19, 1790 by the astronomer William Herschel using an 18.7-inch reflector telescope.
Web links
Commons : NGC 3945 - collection of images, videos, and audio files
