Zeta Arietis
Template:Location mark Location of ζ Arietis (circled) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aries[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | +4.874±0.023[3] |
| Characteristics | |
| Spectral type | A1 V[4] |
| U−B Template:Engvar | −0.01[5] |
| B−V Template:Engvar | −0.02[5] |
| Astrometry | |
| Radial velocity (Rv) | +7.3±2.8[6] km/s |
| Proper motion (μ) | RA: −26.276 mas/yr[2] Dec.: −72.900 mas/yr[2] |
| Parallax (π) | 12.7708±0.3734 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | +0.35[1] |
| Details | |
| Mass | 2.430±0.340[3] Template:Solar mass |
| Radius | 2.974±0.115[3] Template:Solar radius |
| Luminosity | 65.7±4.8[3] Template:Solar luminosity |
| Surface gravity (log g) | 3.88±0.07[3] cgs |
| Temperature | 9,528±117[3] K |
| Rotational velocity (v sin i) | 133[7] km/s |
| Age | 333[8] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[9] | |
| Database references | |
| SIMBAD | data |
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Zeta Arietis is a star in the northern constellation of Aries. Its name is a Bayer designation that is Latinized from ζ Arietis, and abbreviated Zeta Ari or ζ Ari. This star is dimly visible to the naked eye with an apparent visual magnitude of +4.87.[3] Based upon an annual parallax shift of Script error: No such module "val".,[2] the distance to this star is approximately Script error: No such module "convert".. It is receding from the Sun with a radial velocity of +7 km/s.[6]
This is an A-type main sequence star with a stellar classification of A1 V.[4] It is an estimated 333[8] million years old and is spinning rapidly with a projected rotational velocity of 133 km/s.[7] Zeta Arietis has 2.4 times the mass of the Sun and 3.0 times the Sun's radius.[3] It is radiating 66 times the luminosity of the Sun from its photosphere at an effective temperature of 9,528 K,[3] giving it the characteristic white-hued glow of an A-type star.[10]
Name
This star, along with δ Ari, ε Ari, π Ari, and ρ3 Ari, were Al Bīrūnī's Al Buṭain (ألبطين), the dual of Al Baṭn, the Belly.[11] According to the catalogue of stars in the Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars, Al Buṭain was the title for five stars: δ Ari as Botein, π Ari as Al Buṭain I, ρ3 Ari as Al Buṭain II, ε Ari as Al Buṭain III, and ζ Ari as Al Buṭain IV.[12]
In Chinese, Script error: No such module "Lang". (Script error: No such module "Lang".), meaning Yin Force, refers to an asterism consisting of ζ Arietis, 63 Arietis, δ Arietis, τ Arietis and 65 Arietis.[13] Consequently, the Chinese name for ζ Arietis itself is Script error: No such module "Lang". (Script error: No such module "Lang"., Template:Langx.)[14]
References
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- ↑ a b Template:Cite XHIP
- ↑ a b c d e Template:Cite Gaia DR3
- ↑ a b c d e f g h i Script error: No such module "citation/CS1".
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- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Template:In lang 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, Template:ISBN.
- ↑ Template:In lang AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 22 日 Template:Webarchive
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