NGC 1245

NGC 1245
NGC 1245
Observation data (J2000 epoch)
Right ascension	03h 14m 48s
Declination	+47° 15′ 11″
Distance	9,800 ly (3 kpc)
Apparent magnitude (V)	8.4
Apparent dimensions (V)	10'
Physical characteristics
Estimated age	1,06 billion years
Other designations	Cr 38
Associations
Constellation	Perseus
	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

^ ^a ^b ^c "NGC 1245". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2015-06-19.
^ Stephen James O'Meara (2011). Deep-Sky Companions: The Secret Deep, vol. 4. Cambridge University Press. p. 52. ISBN 978-1-139-50007-4.
^ 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.
^ ^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.
^ 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.
^ 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.

External links

Media related to NGC 1245 at Wikimedia Commons

[simbad-1] "NGC 1245". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2015-06-19.

[O'Meara2011-2] 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.

[Subramaniam-4] 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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