Astronomy:Xi Sagittarii
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Short description: Star in the constellation Sagittarius
The Bayer designation Xi Sagittarii (ξ Sagittarii) is shared by two stars, ξ1 Sagittarii and ξ² Sagittarii, in the constellation Sagittarius, separated by 0.46° in the sky. Because they are close to the ecliptic, they can be occulted by the Moon[1] and, very rarely, by planets. The last occultation of ξ² Sagittarii by a planet took place on 22 December 1810, when it was occulted by Venus.[citation needed]
Naming
In Chinese, 建 (Jiàn), meaning Establishment, refers to an asterism consisting of ξ2 Sagittarii, ο Sagittarii, π Sagittarii, 43 Sagittarii, ρ1 Sagittarii, and υ Sagittarii. Consequently, ξ2 Sagittarii itself is known as 建一 (Jiàn yī, English: the First Star of Establishment.)[4]
References
- ↑ White, Nathaniel M.; Feierman, Barry H. (September 1987), "A Catalog of Stellar Angular Diameters Measured by Lunar Occultation", Astronomical Journal 94: 751, doi:10.1086/114513, Bibcode: 1987AJ.....94..751W.
- ↑ "ksi01 Sgr". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=ksi01+Sgr.
- ↑ "ksi02 Sgr". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=ksi02+Sgr.
- ↑ (in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 11 日
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