NGC 1647
| NGC 1647 | |
|---|---|
NGC_1647.jpg) | |
| Observation data (J2000 epoch) | |
| Right ascension | 04h 45m 55s[1] |
| Declination | ±19° 06′ 54″[1] |
| Distance | 1,800 ly (550 pc)[2] |
| Apparent magnitude (V) | 6.4[3] |
| Apparent dimensions (V) | 40′[3] |
| Physical characteristics | |
| Other designations | Cr 54 |
| Associations | |
| Constellation | Taurus[3] |
NGC 1647 is an open cluster of stars in the constellation of Taurus.[3] It contains nearly 90 stars and it lies at a distance of 550 parsec.[2] This cluster is visible with binoculars close to Aldebaran. It was discovered by German-English astronomer William Herschel in 1784.[4] NGC 1647 is located behind the Taurus dark nebula complex, approximately 160 parsec away. The brightest main sequence stars are of spectral type B7. Its age is estimated to be 150 million years.[5]
References
[edit]- 1 2 "NGC 1647". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2015-06-19.
- 1 2 Guerrero, C. A.; Peña, J. H.; Sareyan, J. P. (2011). "uvby-B Photoelectric Photometry of the Open Clusters NGC 1647 and NGC 1778". Revista Mexicana de Astronomía y Astrofísica. 47 (1): 185–192. Bibcode:2011RMxAA..47..185G. Retrieved 19 June 2015.
- 1 2 3 4 Finlay, Warren H. (2014). Concise Catalogue of Deep-Sky Objects. The Patrick Moore Practical Astronomy Series (2nd ed.). Springer Cham. p. 178. doi:10.1007/978-3-319-03170-5. ISBN 978-3-319-03169-9.
- ↑ NGC/IC online - result for NGC 1647 Archived 2012-05-20 at the Wayback Machine
- ↑ Zdanavičius, J.; Straižys, V.; Chen, C. W.; Chen, W. P.; Zdanavičius, K.; Kazlauskas, A.; et al. (2005). "Seven-Color Photometry of the Open Cluster NGC 1647 Area". Baltic Astronomy. 14: 179–203. Bibcode:2005BaltA..14..179Z.
External links
[edit]
Media related to NGC 1647 at Wikimedia Commons
