NGC 3147
| Galaxy NGC 3147 |
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|---|---|
![NGC 3147 [1] Hubble Space Telescope](https://de.wikipedia.org/wiki/Datei:NGC_3147_-_HST.png)
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| NGC 3147 Hubble Space Telescope | |
| AladinLite | |
| Constellation | Dragon |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 10 h 16 m 53.6509 s |
| declination | + 73 ° 24 ′ 02.695 ″ |
| Appearance | |
| Morphological type | SA (rs) bc / HII / Sy2 |
| Brightness (visual) | 10.6 mag |
| Brightness (B-band) | 11.4 mag |
| Angular expansion | 3.9 ′ × 3.5 ′ |
| Position angle | 155 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 3147 group LGG 193 |
| Redshift | 0.009346 ± 0.000003 |
| Radial velocity | 2802 ± 1 km / s |
|
Stroke distance v rad / H 0 |
(131 ± 9) · 10 6 ly (40.1 ± 2.8) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 3, 1785 |
| Catalog names | |
| NGC 3147 • UGC 5532 • PGC 30019 • CGCG 333-022 • MCG + 12-10-025 • IRAS 10126 + 7339 • 2MASX J10165363 + 7324023 • GC 2024 • H I 79 • h 674 • NVSS J101653 + 732403 • LDCE 719 NED001 | |
NGC 3147 is an active spiral galaxy with extensive star formation regions of the Hubble type Sbc in the constellation Dragon in the northern sky . It is estimated to be 131 million light-years from the Milky Way , about 145,000 light-years in diameter, and the brightest member of the four-galaxy NGC 3147 group ( LGG 193 ).
In the same area of the sky are u. a. the galaxies NGC 3144 , NGC 3155 , NGC 3174 , NGC 3183 .
The supernovae SN 1972H (Type-I), SN 1997bq ( Type-Ia ), SN 2006gi (Type-Ib) and SN 2008fv (Type-Ia) were observed here.
The object was discovered by Wilhelm Herschel on April 3, 1785 .
NGC 3147 group ( LGG 193 )
| Galaxy | Alternative name | Distance / million Lj |
|---|---|---|
| NGC 3147 | PGC 30019 | 131 |
| NGC 3155 | PGC 30064 | 137 |
| NGC 3183 | PGC 30323 | 144 |
| PGC 30998 | UGC 5686 | 132 |
Web links
Commons : NGC 3147 - collection of images, videos, and audio files
