NGC 1245

NGC 1245
Observation data (J2000 epoch)
Right ascension03h 14m 48s[1]
Declination+47° 15′ 11″[1]
Distance9,800 ly (3 kpc)
Apparent magnitude (V)8.4 [1]
Apparent dimensions (V)10'
Physical characteristics
Estimated age1,06 billion years
Other designationsCr 38
Associations
ConstellationPerseus
See also: Open cluster, List of open clusters

NGC 1245 is an open cluster in the constellation Perseus. It was discovered by William Herschel in 11 December 1786.[2] It is located 3° southwest of alpha Persei and can be spotted with 10x50 binoculars.[3] The cluster is nearly 1 billion years old.[4] NGC 1245 has about 200 members the brightest of which are of 12th magnitude.[5] The cluster shows evidence of mass segregation and it is possible that it has lost its lower mass members.[6] Lying at a distance of 3kpc, the cluster is estimated to be 27 light years across.[4]

References

  1. ^ a b c "NGC 1245". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2015-06-19.
  2. ^ Stephen James O'Meara (2011). Deep-Sky Companions: The Secret Deep, vol. 4. Cambridge University Press. p. 52. ISBN 978-1-139-50007-4.
  3. ^ Craig Crossen, Gerald Rhemann (2012). Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes. Springer Science & Business Media. p. 93. ISBN 9783709106266. Retrieved 18 March 2015.
  4. ^ a b Subramaniam, A. (2003). "NGC 1245 - an intermediate age open cluster". Bulletin of the Astronomical Society of India. 31: 49–64. arXiv:astro-ph/0303319. Bibcode:2003BASI...31...49S.
  5. ^ O'Meara, Steve (2007). Steve O'Meara's Herschel 400 observing guide. Cambridge: Cambridge university press. p. 327. ISBN 978-0521858939. Retrieved 18 March 2016.
  6. ^ Lee, S. H.; Kang, Y.-W.; Ann, H. B. (11 September 2012). "Deep and wide photometry of the two open clusters NGC 1245 and NGC 2506: CCD observation and physical properties". Monthly Notices of the Royal Astronomical Society. 425 (2): 1567–1575. arXiv:1208.1080. Bibcode:2012MNRAS.425.1567L. doi:10.1111/j.1365-2966.2012.21593.x. S2CID 119268141.
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