Astronomy:NGC 1245
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Short description: Open cluster in the constellation Perseus
| NGC 1245 | |
|---|---|
.jpg) | |
| Observation data (J2000 epoch) | |
| Constellation | Perseus |
| Right ascension | 03h 14m 48s[1] |
| Declination | +47° 15′ 11″[1] |
| Distance | 9,800 ly (3 kpc) |
| Apparent magnitude (V) | 8.4 [1] |
| Apparent dimensions (V) | 10' |
| Physical characteristics | |
| Estimated age | 1,06 billion years |
| Other designations | Cr 38 |
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
- ↑ 1.0 1.1 1.2 "NGC 1245". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+1245.
- ↑ Stephen James O'Meara (2011). Deep-Sky Companions: The Secret Deep, vol. 4. Cambridge University Press. pp. 52. ISBN 978-1-139-50007-4. https://books.google.com/books?id=v859bKO0A4gC&pg=PA52.
- ↑ Craig Crossen, Gerald Rhemann (2012). Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes. Springer Science & Business Media. p. 93. ISBN 9783709106266. https://books.google.com/books?id=3vELBwAAQBAJ&pg=PA93. Retrieved 18 March 2015.
- ↑ 4.0 4.1 Subramaniam, A. (2003). "NGC 1245 - an intermediate age open cluster". Bulletin of the Astronomical Society of India 31: 49–64. 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. https://books.google.com/books?id=Nyh9fAC_tpIC&pg=PA327. 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. doi:10.1111/j.1365-2966.2012.21593.x. Bibcode: 2012MNRAS.425.1567L.
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