Chi1 Orionis
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| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Orion |
| Right ascension | 05h 54m 23.0s |
| Declination | +20° 16′ 34″ |
| Apparent magnitude (V) | 4.39 |
| Characteristics | |
| Spectral type | G0 V |
| U-B color index | 0.07 |
| B-V color index | 0.59 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | -13.4 km/s |
| Proper motion (μ) | RA: -163.17 mas/yr Dec.: -98.92 mas/yr |
| Parallax (π) | 113.58 ± 0.69 mas |
| Distance | 28.7 ± 0.2 ly (8.8 ± 0.05 pc) |
| Absolute magnitude (MV) | 4.67 |
| Details | |
| Mass | 1 M☉ |
| Radius | 1.45 R☉ |
| Luminosity | 1.08 L☉ |
| Temperature | 5,940 K |
| Metallicity | 89-178% |
| Rotation | 24.5 days (6 km/s.) |
| Age | 108 years |
| Other designations | |
Chi1 Orionis (χ1 Ori / χ1 Orionis) is a star about 32 light years away from Earth. It is in the constellation Orion.
χ1 Ori is a main sequence dwarf star of spectral type G0 V. It has a faint companion with an estimated mass of about 15% of the Sun, an orbital period of 14.1 years, and an estimated a stellar class of M6. The companion orbits an average distance of 6.1 AU from the primary and has a fairly high orbital eccentricity.
χ1 Ori is believed to be a stream star member of the Ursa Major Moving Group.
[edit] External links
- Chi-1 Orionis by Professor Jim Kaler.
- Chi1 Orionis 2 at SolStation.
- Alcyone emphemeris.
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