Xi Arietis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Aries |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | +5.46[2] |
| Characteristics | |
| Spectral type | B7 IV[3] |
| U−B Template:Engvar | −0.48[2] |
| B−V Template:Engvar | −0.10[2] |
| Astrometry | |
| Radial velocity (Rv) | −0.5±2.8[4] km/s |
| Proper motion (μ) | RA: +20.979 mas/yr[1] Dec.: −15.022 mas/yr[1] |
| Parallax (π) | 4.2483±0.1511 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −0.43[5] |
| Details | |
| Mass | 4.85±0.13[6] Template:Solar mass |
| Luminosity | 1,000Script error: No such module "Su".[6] Template:Solar luminosity |
| Surface gravity (log g) | Script error: No such module "val".[7] cgs |
| Temperature | Script error: No such module "val".[7] K |
| Rotational velocity (v sin i) | Script error: No such module "val".[7] km/s |
| Age | 195[5] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[8] | |
| Database references | |
| SIMBAD | data |
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Xi Arietis is a binary star[9] system in the northern constellation of Aries. Its name is a Bayer designation that is Latinized from ξ Arietis, and abbreviated Xi Ari or ξ Ari. This system has an apparent visual magnitude of 5.46,[2] and so is dimly visible to the naked eye. Based upon an annual parallax shift of Script error: No such module "val". as seen from Earth, it is Script error: No such module "convert". distant from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.24 due to interstellar dust.[5] The proximity of this system to the ecliptic means it is subject to lunar occultations.[10]
This is a double-lined spectroscopic binary.[9] The spectrum matches a stellar classification of B7 IV,[3] which suggests a subgiant star that has exhausted the supply of hydrogen at its core and is in the process of evolving into a giant star. Xi Arietis was once a designation for Psi Ceti (ψ Cet, ψ Ceti), and was later recognized to be a duplicate by Bayer.[11]
References
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- ↑ a b c d Template:Cite Gaia DR3
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- ↑ a b c Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
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