NGC 3947
| Galaxy NGC 3947 |
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|---|---|
![NGC 3947 with 2MASX J11531496 + 2044085 [1] (ru)](https://de.wikipedia.org/wiki/Datei:NGC3947_-_SDSS_DR14.jpg)
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| NGC 3947 with 2MASX J11531496 + 2044085 (ru) | |
| AladinLite | |
| Constellation | lion |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 11 h 53 m 20.3 s |
| declination | + 20 ° 45 ′ 06 ″ |
| Appearance | |
| Morphological type | (R) SB (rs) b / HII |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 13.9 likes |
| Angular expansion | 1.4 ′ × 1.2 ′ |
| Position angle | 90 ° |
| Surface brightness | 13.6 mag / arcmin² |
| Physical data | |
| Affiliation | WBL 363-004 |
| Redshift | 0.020671 ± 0.000017 |
| Radial velocity | 6197 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(275 ± 19) x 10 6 ly (84.3 ± 5.9) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | April 26, 1785 |
| Catalog names | |
| NGC 3947 • UGC 6863 • PGC 37264 • CGCG 127-095 • MCG + 04-28-088 • IRAS 11507 + 2101 • 2MASX J11532031 + 2045055 • GC 2603 • H II 403 • h 1008 • GALEX ASC J115320.32 + 204505.7 • LDCE 836 NED057 | |
NGC 3947 is a barred spiral galaxy with extensive star formation from Hubble type SBb in the constellation Leo on the ecliptic . It is estimated to be 275 million light-years away from the Milky Way and has a diameter of about 115,000 ly.
In the same area of the sky are the galaxies NGC 3937 , NGC 3946 , NGC 3954 , IC 2968 .
The supernovae SN 1972C , SN 2001P ( Type-Ia ), SN 2006aa (Type-IIn) and SN 2013G (Type-Ia) were observed here.
The object was discovered by Wilhelm Herschel on April 26, 1785 .
Web links
Commons : NGC 3947 - collection of images, videos, and audio files
