NGC 7753
| Galaxy NGC 7753 |
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|---|---|
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| Image of the spiral galaxies NGC 7752 and 7753 with the help of the 81 cm mirror telescope of the Mount Lemmon Observatory . | |
| AladinLite | |
| Constellation | Pegasus |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 23 h 47 m 04.8 s |
| declination | + 29 ° 29 ′ 00 ″ |
| Appearance | |
| Morphological type | SAB (rs) bc |
| Brightness (visual) | 12.2 mag |
| Brightness (B-band) | 13 likes |
| Angular expansion | 3.3 ′ × 2.1 ′ |
| Position angle | 50 ° |
| Surface brightness | 14.2 mag / arcmin² |
| Physical data | |
| Redshift | 0.017239 ± 0.000020 |
| Radial velocity | (5168 ± 6) km / s |
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Stroke distance v rad / H 0 |
(239 ± 17) · 10 6 ly (73.3 ± 5.1) Mpc |
| diameter | 230,000 ly |
| history | |
| discovery | William Herschel |
| Discovery date | September 12, 1784 |
| Catalog names | |
| NGC 7753 • UGC 12780 • PGC 72387 • MCG + 05-56-005 • IRAS 23445 + 2911 • Arp 86 • GC 5011 • H II 213 • h 2268 • LDCE 1597 NED002 | |
NGC 7753 is a barred spiral galaxy of the Hubble type SAB (rs) bc in the constellation Pegasus in the northern sky . It is about 240 million light years from the Milky Way and about 230,000 light years in diameter .
Together with its interacting companion NGC 7752 , it forms the object Arp 86 . Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class spiral galaxies with a large companion of high surface brightness on one arm (Arp catalog) .
The galaxy was discovered on September 12, 1784 by William Herschel .
Web links
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