NGC 7253
Galaxy NGC 7253 |
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SDSS recording | |
AladinLite | |
Constellation | Pegasus |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 22 h 19 m 28.9 s |
declination | + 29 ° 23 ′ 30 ″ |
Appearance | |
Morphological type | SB? + S? |
Brightness (visual) | A: 13.7 mag B: 14.3 mag |
Brightness (B-band) | A: 14.4 mag B: 15.0 mag |
Angular expansion | A: 1.7 / 0.8 B: 1.6 / 0.5 |
Position angle | A: 116 ° B: 71 ° |
Surface brightness | A: 13.9 mag / arcmin² B: 13.9 mag / arcmin² |
Physical data | |
Redshift | 0.015738 ± 0.000093 |
Radial velocity | 4718 ± 28 km / s |
Stroke distance v rad / H 0 |
(220 ± 15) · 10 6 ly (67.5 ± 4.7) Mpc |
history | |
discovery | Albert Marth |
Discovery date | September 9, 1863 |
Catalog names | |
NGC 7253A / B • UGC 11984/11985 • PGC 68572/68573 • CGCG 494-014 • MCG + 05-52-010 / 011 • IRAS 22171 + 2908 • Arp 275 • VV 242 • HOLM 790A / B |
NGC 7253 is an interacting pair of galaxies in the constellation Pegasus. It is estimated to be 220 million light years from the Milky Way . The two galaxies are also known as NGC 7253A and NGC 7253B and form the interactive galaxy pair Arp 278 . Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This pair of galaxies belongs to the class interacting double galaxies .
The object was discovered by Albert Marth on September 9, 1863 .
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