Astronomy:NGC 1245
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| NGC 1245 | |
|---|---|
.jpg) | |
| Observation data (J2000 epoch) | |
| Constellation | Perseus |
| Right ascension | 03h 14m 48s[1] |
| Declination | +47° 15′ 11″[1] |
| Distance | 9,800 ly (3.0 kpc) |
| Apparent magnitude (V) | 8.4[2] |
| Apparent dimensions (V) | 10′[2] |
| Physical characteristics | |
| Estimated age | 1.06 Gyr |
| Other designations | Cr 38 |
NGC 1245 is an open cluster of stars in the northern constellation of Perseus.[2] It was discovered by William Herschel on 11 December 1786.[3] It is located 3° southwest of alpha Persei and can be spotted with 10x50 binoculars.[4] The cluster is nearly 1 billion years old.[5] NGC 1245 has about 200 members the brightest of which are of 12th magnitude.[6] The cluster shows evidence of mass segregation and it is possible that it has lost its lower mass members.[7] Lying at a distance of 3kpc, the cluster is estimated to be 27 light years across.[5]
References
- ↑ 1.0 1.1 "NGC 1245". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+1245.
- ↑ 2.0 2.1 2.2 Finlay, Warren H. (2014). Concise Catalogue of Deep-Sky Objects. The Patrick Moore Practical Astronomy Series (2nd ed.). Springer Cham. p. 173. doi:10.1007/978-3-319-03170-5. ISBN 978-3-319-03169-9.
- ↑ 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.
- ↑ 5.0 5.1 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.
External links
Template:NGC objects:1001-2000
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