NGC 4675
| Galaxy NGC 4675 |
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|---|---|
![NGC 4675 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC4675_-_SDSS_DR14.jpg)
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| NGC 4675 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 45 m 31.889 s |
| declination | + 54 ° 44 ′ 15.42 ″ |
| Appearance | |
| Morphological type | SBb |
| Brightness (visual) | 14.3 mag |
| Brightness (B-band) | 15.1 mag |
| Angular expansion | 1.6 ′ × 0.6 ′ |
| Position angle | 97 ° |
| Surface brightness | 14.1 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 4686 group LGG 300 |
| Redshift | 0.015866 ± 0.000124 |
| Radial velocity | 4757 ± 37 km / s |
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Stroke distance v rad / H 0 |
(217 ± 15) x 10 6 ly (66.4 ± 4.7) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 14, 1789 |
| Catalog names | |
| NGC 4675 • UGC 7935 • PGC 42998 • CGCG 270-019 • MCG + 09-21-039 • IRAS 12432 + 5500 • 2MASX J12453191 + 5444151 • GC 3206 • H II 795 • 2MASS J12453192 + 5444149 • LDCE 914 NED005 • NVSS J124532 +544415 | |
NGC 4675 is a 14.3 mag bright barred spiral galaxy of the Hubble type SBb in the constellation Great Bear in the northern sky. It is estimated to be 217 million light-years from the Milky Way and about 100,000 light-years across. The galaxy is considered a member of the NGC 4686 group ( LGG 300 ).
In the same area of the sky are the galaxies NGC 4646 , NGC 4669 , NGC 4686 , NGC 4695 .
The Type Ia supernova SN 1997Y was observed here.
The object was discovered on April 14, 1789 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "pB, vS, mbM".