NGC 4707
| Galaxy NGC 4707 |
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|---|---|
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| Image of the galaxy NGC 4707 based on images taken by the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Hunting dogs |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 48 m 22.9 s |
| declination | + 51 ° 09 ′ 53 ″ |
| Appearance | |
| Morphological type | Sm |
| Brightness (visual) | 13.0 likes |
| Brightness (B-band) | 13.6 mag |
| Angular expansion | 2.2 ′ × 2.1 ′ |
| Position angle | 25 ° |
| Surface brightness | 14.5 mag / arcmin² |
| Physical data | |
| Redshift | 0.001561 ± 0.000003 |
| Radial velocity | 468 ± 1 km / s |
|
Stroke distance v rad / H 0 |
(25 ± 2) x 10 6 ly (7.54 ± 0.53) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 26, 1789 |
| Catalog names | |
| NGC 4707 • UGC 7971 • PGC 43255 • CGCG 270-025 • MCG + 09-21-050 • 2MASX i J1248232 + 510947 • GC 3235 • H III 815 • | |
NGC 4707 is a spiral dwarf galaxy of the Hubble type Sm in the constellation Hounds in the northern sky with an irregular appearance of the spiral arms and without bulges . It is an estimated 25 million light years from the Milky Way and about 15,000 light years across.
The object was discovered on April 26, 1789 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "small, stellar".
Web links
- NGC 4707. SIMBAD , accessed February 4, 2015 .
- NGC 4707. DSO Browser, accessed February 4, 2015 .
- Spacetelescope.org