NGC 2648
Galaxy NGC 2648 |
|
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LEDA 24469 (left edge of image) , NGC 2648 & LEDA 4174606 (r) | |
AladinLite | |
Constellation | cancer |
Position equinox : J2000.0 , epoch : J2000.0 |
|
Right ascension | 08 h 42 m 39.8 s |
declination | + 14 ° 17 ′ 08 ″ |
Appearance | |
Morphological type | S (s) b / RET |
Brightness (visual) | 12.0 mag |
Brightness (B-band) | 12.9 mag |
Angular expansion | 3.2 ′ × 1.1 ′ |
Position angle | 148 ° |
Surface brightness | 13.2 mag / arcmin² |
Physical data | |
Redshift | 0.006871 ± 0.000033 |
Radial velocity | (2060 ± 10) km / s |
Stroke distance v rad / H 0 |
(87 ± 6) · 10 6 ly (26.7 ± 1.9) Mpc |
history | |
discovery | William Herschel |
Discovery date | March 19, 1784 |
Catalog names | |
NGC 2648 • UGC 4541 • PGC 24464 • CGCG 060-035 • MCG + 02-22-005 • 2MASX J08423982 + 1417078 • Arp 89 • GC 1688 • H III 49 • h 521/3135 • GALEX ASC J084239.93 + 141706.7 |
NGC 2648 is a spiral galaxy of Hubble type Sa in the constellation of Cancer at the northern sky . It is estimated to be 87 million light years away from the Milky Way and has a diameter of around 85,000 ly . Together with PGC 24469 , it forms the interactive pair of galaxies Arp 89, which is cataloged in the Atlas of Peculiar Galaxies .
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 object was discovered by William Herschel on March 19, 1784 .
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