NGC 4566
| Galaxy NGC 4566 |
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|---|---|
![NGC 4566 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC4566_-_SDSS_DR14.jpg)
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| NGC 4566 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 36 m 00.110 s |
| declination | + 54 ° 13 ′ 15.53 ″ |
| Appearance | |
| Morphological type | Sb / Sy2 |
| Brightness (visual) | 13.1 mag |
| Brightness (B-band) | 13.9 likes |
| Angular expansion | 1.3 ′ × 0.9 ′ |
| Position angle | 80 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 4686 group LGG 300 isolated |
| Redshift | 0.017849 ± 0.000030 |
| Radial velocity | 5351 ± 9 km / s |
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Stroke distance v rad / H 0 |
(243 ± 17) x 10 6 ly (74.5 ± 5.2) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 2, 1791 |
| Catalog names | |
| NGC 4573 • UGC 7769 • PGC 42007 • CGCG 270-012 • MCG + 09-21-24 • 2MASX J12374380-4337163 • GC 3107 • H III 880 • h 1360 • 2MASS J12360009 + 5413153 • NSA 162093 • WISEA J123600.12 + 541315.4 • 2MIG 1748 • KIG 539 | |
NGC 4566 is a spiral galaxy of the Hubble type Sbc with an active galaxy core in the constellation Great Bear in the northern sky . It is an estimated 243 million light years from the Milky Way and about 90,000 light years in diameter. The galaxy is considered a member of the NGC 4686 group ( LGG 300 ).
The object was discovered on April 2, 1791 by Wilhelm Herschel with an 18-inch reflector telescope.