FU Orionis
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Star FU 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 45 m 22.37 s | ||||||||
| declination | + 09 ° 04 ′ 12.3 ″ | ||||||||
| Apparent brightness | 9.6 likes | ||||||||
| Typing | |||||||||
| B − V color index | (1.12) | ||||||||
| Spectral class | F0 Iab | ||||||||
| Variable star type | FUOR | ||||||||
| Astrometry | |||||||||
| parallax | 2.83 ± 0.53 mas | ||||||||
| distance | (1.150) ly (350) pc |
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| Proper movement | |||||||||
| Rec. Share: | (2.29) mas / a | ||||||||
| Dec. portion: | (−2.26) mas / a | ||||||||
| Physical Properties | |||||||||
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Other names and catalog entries |
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FU Orionis is a star about 1150 light years away . It is the prototype of the FU Orionis stars , which belong to the eruptive variable stars . FU Orionis is a pre-main sequence star that has not yet stabilized. This also makes it difficult to determine a spectral class . There are indications of a companion that would make FU Orionis a binary star system .
Web links
Individual evidence
- ↑ a b c d e f FU Ori. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 16, 2018 .
- ^ FU Ori. In: VSX. AAVSO, accessed September 16, 2018 .
- ↑ B. Reipurth, C. Aspin: The FU Orionis Binary System and the Formation of Close Binaries . In: The Astrophysical Journal Letters . 608, June 2004, pp. L65-L68. doi : 10.1086 / 422250 .