NGC 647
| Galaxy NGC 647 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 01 h 39 m 56.2 s |
| declination | -09 ° 14 ′ 33 ″ |
| Appearance | |
| Morphological type | SB (r) 0 ^ 0 ^? / LINER |
| Brightness (visual) | 13.5 likes |
| Brightness (B-band) | 14.5 mag |
| Angular expansion | 1.5 ′ × 1.1 ′ |
| Position angle | 3 ° |
| Surface brightness | 13.9 mag / arcmin² |
| Physical data | |
| Redshift | 0.042499 +/- 0.000110 |
| Radial velocity | 12,741 +/- 33 km / s |
|
Stroke distance v rad / H 0 |
(570 ± 40) x 10 6 ly (174.8 ± 12.2) Mpc |
| history | |
| discovery | Francis Preserved Leavenworth |
| Discovery date | 1886 |
| Catalog names | |
| NGC 647 • PGC 6155 • MCG -02-05-033 • 2MASX J01395621-0914329 • GALEX ASC J013956.17-091431.1 • NPM1G -09.0072 | |
NGC 647 is a lenticular galaxy with an active nucleus of the Hubble type SB0 in the constellation Whale south of the ecliptic . It is estimated to be 570 million light years away from the Milky Way and has a diameter of around 255,000 ly.
In the same area of the sky are the galaxies NGC 640 and NGC 649 , among others .
The object was discovered in 1886 by the American astronomer Francis Preserved Leavenworth .
Web links
Commons : NGC 647 - collection of images, videos, and audio files
- SIMBAD Astronomical Database
- Auke Slotegraaf: NGC 647. Deep Sky Observer's Companion, accessed September 5, 2015 .