Astronomy:NGC 1647

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NGC 1647
NGC 1647 in 20205
Observation data (J2000 epoch)
ConstellationTaurus[1]
Right ascension 04h 45m 55s[2]
Declination±19° 06′ 54″[2]
Distance1,800 ly (550 pc)[3]
Apparent magnitude (V)6.4[1]
Apparent dimensions (V)40′[1]
Physical characteristics
Estimated age203 ± 27 Myr[4]
Other designationsCr 54, Pirate Moon Cluster[5][6]
See also: Open cluster, List of open clusters

NGC 1647 is an open cluster of stars in the constellation of Taurus.[1] It contains nearly 90 stars and it lies at a distance of 550 parsec.[3] This cluster is visible with binoculars close to Aldebaran. It was discovered by German-English astronomer William Herschel in 1784.[7] NGC 1647 is located behind the Taurus dark nebula complex which is approximately 160 parsec away. The brightest main sequence stars are of spectral type B7.[8] Its age is estimated to be about 200 million years.[4]

References

  1. ↑ 1.0 1.1 1.2 1.3 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. 
  2. ↑ 2.0 2.1 "NGC 1647". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+1647. 
  3. ↑ 3.0 3.1 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. http://www.redalyc.org/articulo.oa?id=57119922013. Retrieved 19 June 2015. 
  4. ↑ 4.0 4.1 Frasca, A.; Qin, M.; Alonso-Santiago, J.; Catanzaro, G.; Fu, J. N.; Zhang, J. Y.; Bragaglia, A. (2026). "NGC 1647: A young open cluster with a broad main sequence observed with LAMOST". Astronomy & Astrophysics 710: A164. doi:10.1051/0004-6361/202659278. Bibcode: 2026A&A...710A.164F. 
  5. ↑ "Hunt for Minor Planets: Psyche under the Pirate Moon". Cities and Skies. https://cities-and-skies.com/hunt-for-minor-planets-psyche-under-the-pirate-moon/. 
  6. ↑ Bakich, Michael E. (December 19, 2013). "Hind's Crimson Star, the Pirate Moon Cluster, and the Embryo Nebula". Astronomy.com. https://www.astronomy.com/science/hinds-crimson-star-the-pirate-moon-cluster-and-the-embryo-nebula/. 
  7. ↑ NGC/IC online - result for NGC 1647
  8. ↑ 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. 

Template:NGC objects:1001-2000



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