Zeta Arietis, Latinized from ζ Arietis, is a star in the northern constellation of Aries. It is dimly visible to the naked eye with an apparent visual magnitude of +4.89.[2] Based upon an annual parallax shift of 12.77 mas,[1] the distance to this star is 255 ± 7 light-years (78 ± 2 parsecs). This is an A-type main sequence star with a stellar classification of A1 V.[3] It has a high rate of rotation with a projected rotational velocity of 133 km/s.[8] The star is shining at an effective temperature of 9,500 K,[7] giving it the characteristic white-hued glow of an A-type star.[10]
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aries |
| Right ascension | 03h 14m 54.09143s[1] |
| Declination | +21° 02′ 39.9952″[1] |
| Apparent magnitude (V) | +4.89[2] |
| Characteristics | |
| Spectral type | A1 V[3] |
| U−B color index | –0.01[2] |
| B−V color index | –0.02[2] |
| Astrometry | |
| Radial velocity (Rv) | +7.0[4] km/s |
| Proper motion (μ) | RA: –19.930[1] mas/yr Dec.: –72.900[1] mas/yr |
| Parallax (π) | 12.7708 ± 0.3734 mas[1] |
| Distance | 255 ± 7 ly (78 ± 2 pc) |
| Absolute magnitude (MV) | +0.35[5] |
| Details | |
| Mass | 2.66±0.07[6] M☉ |
| Luminosity | 73[5] L☉ |
| Temperature | 9,500[7] K |
| Rotational velocity (v sin i) | 133[8] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
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 were 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 dan ζ Ari as Al Buṭain IV.[12]
In Chinese, 天陰 (Tiān Yīn), 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 天陰二 (Lóu Su èr, English: the Second Star of Yin Force.)[14]
References
Wikiwand in your browser!
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.
