| NGC 247 | |
|---|---|
 NGC 247 imaged by the Wide Field Imager (WFI) at ESO's La Silla Observatory in Chile | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus |
| Right ascension | 00h 47m 08.2851s[1] |
| Declination | −20° 45′ 37.645″[1] |
| Distance | 11.1 ± 1.2 Mly |
| Apparent magnitude (V) | 9.9[1] |
| Characteristics | |
| Type | SAB(s)d[1] |
| Apparent size (V) | 21.4′ × 6.9′[1] (70,000 light-years in diameter) |
| Other designations | |
| HIPASS J0047-20, LEDA 2758, ESO-LV 540-0220, IRAS F00446-2101, 2MASX J00470855-2045374, ESO 540-22, IRAS 00446-2101, MCG-04-03-005, GLXY G113.8-83.5+144, KUG 0044-210, UGCA 11, PGC 2758,[1] Caldwell 62 | |
NGC 247 (also known as Caldwell 62 and commonly known as the Claw Galaxy[2]) is an intermediate spiral galaxy about 11.1 Mly away in the constellation Cetus. This distance was confirmed in late February 2011. Previous measurements showed that the galaxy was about 12.2 Mly away, but this was proved to be wrong.[3] NGC 247 is a member of the Sculptor Group, and is 70 000 light years in diameter. [4]
NGC 247 has an unusually large void on one side of its spiral disk. This void contains some older, redder stars but no younger, bluer stars.[5]
- ^ a b c d e f "NASA/IPAC Extragalactic Database". Results for NGC 247. Retrieved 2006-12-19.
- ^ Chadwick, Stephen; Cooper, Ian (11 December 2012). Imaging the Southern Sky. Springer. p. 328. ISBN 978-1461447498.
- ^ ""eso1107 — Photo Release: The Dusty Disc of NGC 247"". www.eso.org. Retrieved 24 Jul 2022.[1]
- ^ "NGC 247, an intermediate spiral galaxy in Cetus". Anne's Astronomy News (in Dutch). 2013-12-05. Retrieved 2020-04-16.
- ^ Wagner-Kaiser, R.; Demaio, T.; Sarajedini, A.; Chakrabarti, S. (2014). "The Void in the Sculptor Group Spiral Galaxy NGC 247". Monthly Notices of the Royal Astronomical Society. 443 (4): 3260–3269. arXiv:1407.0584. Bibcode:2014MNRAS.443.3260W. doi:10.1093/mnras/stu1327.