41 Arietis
 Location of 41 Arietis (circled) |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aries |
| Right ascension | 02h 49m 59.03324s[1] |
| Declination | +27° 15′ 37.8260″[1] |
| Apparent magnitude (V) | 3.63[2] |
| Characteristics | |
| Spectral type | B8 Vn[3] |
| U−B color index | –0.38[2] |
| B−V color index | –0.10[2] |
| Astrometry | |
| Radial velocity (Rv) | +4[4] km/s |
| Proper motion (μ) | RA: +66.81[1] mas/yr Dec.: –116.52[1] mas/yr |
| Parallax (π) | 19.69 ± 0.19[1] mas |
| Distance | 166 ± 2 ly (50.8 ± 0.5 pc) |
| Details | |
| Mass | 3.1±0.1[5] M☉ |
| Luminosity | 160[6] L☉ |
| Temperature | 11900[6] K |
| Rotational velocity (v sin i) | 175[7] km/s |
| Age | 130+10 −30[5] Myr |
| Other designations | |
41 Arietis (abbreviated 41 Ari) is a binary star[9] in the northern constellation of Aries. 41 Arietis is the Flamsteed designation. It does not possess a Greek letter Bayer designation, since this star was once part of the now-obsolete constellation Musca Borealis, but is sometimes designated c Arietis. With an apparent visual magnitude of 3.63,[2] this star is readily visible to the naked eye. It has an annual parallax shift of 19.69 mas,[1] which indicates the distance to this star is 166 light-years (51 parsecs).
The primary component is a B-type main sequence star with a stellar classification of B8 Vn.[3] The suffix 'n' indicates 'nebulous' absorption lines in the star's spectrum caused by the Doppler effect of rapid rotation. It has a projected rotational velocity of 175 km/s.[7] This is creating an equatorial bulge that is 12% large than the star's polar radius.[10] It is a candidate member of the AB Doradus moving group[6] and has an orbiting companion at an angular separation of 0.3 arcseconds.[9]
41 Ari is part of the Bharani lunar mansion in Hindu astrology. In Chinese, 胃宿 (Wèi Su), meaning Stomach (asterism), refers to an asterism consisting of 41 Arietis, 35 Arietis and 39 Arietis.[11] Consequently, 41 Arietis itself is known as 胃宿三 (Wèi Su sān, English: the Third Star of Stomach.)[12]
References
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- ↑ (Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
- ↑ (Chinese) 白羊座
