NGC 3656
| Galaxy NGC 3656 |
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|---|---|
.png)
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| Combination of images from the Hubble Space Telescope (brightness) and SDSS (color) | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 11 h 23 m 38.6 s |
| declination | + 53 ° 50 ′ 32 ″ |
| Appearance | |
| Morphological type | (R ') I0: / pec / LINER |
| Brightness (visual) | 12.3 mag |
| Brightness (B-band) | 13.3 mag |
| Angular expansion | 1.6 ′ × 1.6 ′ |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.009640 ± 0.000037 |
| Radial velocity | (2890 ± 11) km / s |
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Stroke distance v rad / H 0 |
(132 ± 9) x 10 6 ly (40.5 ± 2.8) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 14, 1789 |
| Catalog names | |
| NGC 3656 • UGC 6403 • PGC 34989 • CGCG 268-029 • MCG + 09-19-063 • IRAS 11208 + 5406 • 2MASX J11233859 + 5350313 • Arp 155 • VV 22 • GC 2397 • H III 782 • h 874 • | |
NGC 3656 = Arp 155 is a galaxy of Hubble type E? in the constellation Great Bear in the north star sky . It is estimated to be 132 million light years from the Milky Way and about 60,000 light years in diameter.
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class of galaxies with internal absorption .
The supernovae SN 1963K ( Type Ia ) and SN 1973C were observed here.
The object was discovered by Wilhelm Herschel on April 14, 1789 .
literature
- Jeff Kanipe and Dennis Webb: The Arp Atlas of Peculiar Galaxies - A Chronicle and Observer's Guide , Richmond 2006, ISBN 978-0-943396-76-7
Web links
Commons : NGC 3656 - collection of images, videos, and audio files
