UX Orionis
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Star UX Orionis |
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| AladinLite | |||||||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Orion | ||||||||||
| Right ascension | 05 h 04 m 29.99 s | ||||||||||
| declination | -03 ° 47 ′ 14.3 ″ | ||||||||||
| Apparent brightness | 8.7 likes | ||||||||||
| Typing | |||||||||||
| B − V color index | +2.23 | ||||||||||
| U − B color index | −0.68 | ||||||||||
| R − I index | +0.19 | ||||||||||
| Spectral class | A4 IVe | ||||||||||
| Variable star type | UXOR | ||||||||||
| Astrometry | |||||||||||
| Radial velocity | +100 km / s | ||||||||||
| parallax | (3.08 ± 0.05) mas | ||||||||||
| distance | (1058 ± 20) ly 325 pc |
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| Proper movement | |||||||||||
| Rec. Share: | (+0.76 ± 0.14) mas / a | ||||||||||
| Dec. portion: | (−3.86 ± 0.12) mas / a | ||||||||||
| Physical Properties | |||||||||||
| Dimensions | 2.5 M ☉ | ||||||||||
| Age | 2 to 5 mill. A | ||||||||||
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Other names and catalog entries |
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UX Orionis is a star about 1060 light years away . It is the prototype of the UX Orionis stars , which belong to the eruptive variable stars . UX Orionis is a pre-main sequence star .
See also
Web links
Individual evidence
- ↑ a b c d e f g h UX Ori. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 9, 2018 .
- ↑ UX Ori. In: VSX. AAVSO, accessed September 9, 2018 .
- ↑ a b A. Kreplin et al .: Resolving the inner disk of UX Orionis . In: Astronomy & Astrophysics . 590, May 2016, p. A96. bibcode : 2016A & A ... 590A..96K . doi : 10.1051 / 0004-6361 / 201628281 .