NGC 4047
| Galaxy NGC 4047 |
|
|---|---|
![NGC 4047 with LEDA 2322652 (o) [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC4047_-_SDSS_DR14.jpg)
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| NGC 4047 with LEDA 2322652 (o) SDSS image | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 02 m 50.680 s |
| declination | + 48 ° 38 ′ 10.33 ″ |
| Appearance | |
| Morphological type | (R) SA (rs) b: |
| Brightness (visual) | 12.3 mag |
| Brightness (B-band) | 13.1 mag |
| Angular expansion | 1.6 ′ × 1.3 ′ |
| Position angle | 105 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Redshift | 0.011375 ± 0.000057 |
| Radial velocity | 3410 ± 17 km / s |
|
Stroke distance v rad / H 0 |
(155 ± 11) · 10 6 ly (47.5 ± 3.3) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | February 9, 1788 |
| Catalog names | |
| NGC 4047 • UGC 7025 • PGC 38042 • CGCG 243-037 • MCG + 08-22-058 • IRAS 12002 + 4854 • 2MASX J12025065 + 4838106 • GC 2676 • H II 741 • h 1058 • GALEX ASC J120250.72 + 483811.2 • NVSS J120250 + 483809 • WISEA J120250.63 + 483810.1 | |
NGC 4047 is a spiral galaxy of Hubble type Sb in the constellation Ursa Major at the northern sky . It is an estimated 155 million light years away from the Milky Way and about 70,000 light years in diameter. Together with PGC 2322652 , it forms an optical pair of galaxies.
The object was discovered on February 9, 1788 by the astronomer Wilhelm Herschel .