Astronomy:NGC 1545
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| NGC 1545 | |
|---|---|
 NGC 1545 | |
| Observation data (J2000 epoch) | |
| Constellation | Perseus[1] |
| Right ascension | 04h 20m 50s[2] |
| Declination | +50° 15′ 12″[2] |
| Distance | 2,320 ly (711 pc[3]) |
| Apparent magnitude (V) | 6.2[1] |
| Apparent dimensions (V) | 18′[1] |
| Physical characteristics | |
| Estimated age | 280 millions years |
| Other designations | Cr 49 |
NGC 1545 is an open cluster of stars in the northern constellation of Perseus.[1] It was discovered by German-British astronomer William Herschel on December 28, 1790.[4] This cluster is located in the north-eastern part of the constellation, a few arcminutes east of the 4.5 magnitude star b Persei, near the equally large and bright NGC 1528 (m = 6.4), which is less than 1.5° towards the northwest. However, it is less dense and rich. The brightest star of the cluster is a K5 III giant star, with 7.1 magnitude, but its membership is questionable. One more 7.9 magnitude star is visible at the north edge of the cluster.[5]
References
- ↑ 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.
- ↑ 2.0 2.1 "SIMBAD Astronomical Database". Results for NGC 1545. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+1545&submit=SIMBAD+search.
- ↑ WEBDA: NGC 1545
- ↑ Seligman, Courtney. "NGC 1545 (= OCL 399 = "PGC 3518640")". http://cseligman.com/text/atlas/ngc15.htm#1545.
- ↑ Craig Crossen; Gerald Rhemann (2012). Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes. Springer Science & Business Media. p. 95. ISBN 9783709106266. https://books.google.com/books?id=3vELBwAAQBAJ&pg=PA95. Retrieved 30 October 2015.
External links
Template:NGC objects:1500-1999
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