31 Arietis
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aries |
| Right ascension | 02h 36m 37.91730s[1] |
| Declination | +12° 26′ 51.4867″[1] |
| Apparent magnitude (V) | 5.75[2] |
| Characteristics | |
| Spectral type | F7 V[2] |
| U−B color index | –0.05[3] |
| B−V color index | +0.47[3] |
| Astrometry | |
| Radial velocity (Rv) | +8.8 km/s |
| Proper motion (μ) | RA: +282.19[1] mas/yr Dec.: –86.84[1] mas/yr |
| Parallax (π) | 28.79 ± 0.43[1] mas |
| Distance | 113 ± 2 ly (34.7 ± 0.5 pc) |
| Absolute magnitude (MV) | 2.94[4] |
| Details | |
| Temperature | 6,137[4] K |
| Metallicity [Fe/H] | –0.25[4] dex |
| Rotational velocity (v sin i) | 5[5] km/s |
| Age | 2.8[4] Gyr |
| Other designations | |
31 Arietis (abbreviated 31 Ari) is a binary star in the northern constellation of Aries. 31 Arietis is the Flamsteed designation. The two members of this system orbit each other with a period of 1.924 years and an eccentricity of 0.88. The primary component is an F-type main sequence star with a stellar classification of F7 V. The pair have an apparent visual magnitude of 5.75,[2] which is just bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of 28.79 mas,[1] the distance to this system is approximately 113 light-years (35 parsecs).
References
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- ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 4.3 Lua error in package.lua at line 80: module 'strict' not found.
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External links
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