UX Orionis
Star UX Orionis |
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AladinLite | |||||||||||
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 | ||||||||||
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 .