Adhil
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Star Adhil |
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| Position of Adhil in the constellation Andromeda | |||||||||||||||||
| AladinLite | |||||||||||||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Andromeda | ||||||||||||||||
| Right ascension | 01 h 22 m 20.42 s | ||||||||||||||||
| declination | + 45 ° 31 ′ 43.6 ″ | ||||||||||||||||
| Apparent brightness | 4.9 likes | ||||||||||||||||
| Typing | |||||||||||||||||
| Spectral class | K0 IIIb | ||||||||||||||||
| Astrometry | |||||||||||||||||
| Radial velocity | (−12.87 ± 0.19) km / s | ||||||||||||||||
| parallax | (15.21 ± 0.28) mas | ||||||||||||||||
| distance | 214 ly 66 pc |
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| Physical Properties | |||||||||||||||||
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Other names and catalog entries |
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Adhil ( Bayer name Xi Andromedae , short ξ And ) is a star in the constellation Andromeda and an official star name of the International Astronomical Union (IAU).
It is a giant star of the spectral class K0 IIIb with an apparent brightness of 4 m , 9. ξ And is about 214 light years (66 parsecs ) from Earth.
In the 1991 Bright Star catalog , Adhil was classified as a spectroscopic binary star with a component orbital period of 17.77 days. According to a more recent study from 2008, however, it is probably a single star.
In Karl Manitius ' German translation of Claudius Ptolemy's Handbook of Astronomy , 46 Andromedae is referred to as Adhil . Adhil (الذيل / aḏ-ḏayl ) comes from the Arabic language and can be translated as “ train ”.
On August 21, 2016, the IAU defined the proper name Adhil as the standardized proper name for this star.
Web links
- SIMBAD query (English)
- Picture of ξ And (English)
Individual evidence
- ↑ a b c d SIMBAD query
- ^ Johnson ; Iriarte; Mitchell; Wiśniewski : UBVRIJKL photometry of the bright stars. In: Communications of the Lunar and Planetary Laboratory Vol. 4 No. 99 (1966), online
- ↑ a b P. P. Eggleton, AA Tokovinin: A catalog of multiplicity among bright stellar systems . In: Monthly Notices of the Royal Astronomical Society Vol. 389 No. 2 (September 2008), pp. 869-879, doi : 10.1111 / j.1365-2966.2008.13596.x . See entry HR 390 in Table 1 of the supporting information for the electronic article.
- ↑ Bulletin of the IAU Working Group on Star Names, No. 2, October 2016. ( PDF ; 151 kB) Retrieved on November 10, 2016 (English).