Alpha Corvi
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Corvus |
| Right ascension | 12h 08m 24.8s |
| Declination | -24° 43′ 44″ |
| Apparent magnitude (V) | 4.00 |
| Characteristics | |
| Spectral type | F2 IV[1] |
| U−B color index | -0.02 |
| B−V color index | 0.33 |
| Astrometry | |
| Radial velocity (Rv) | +4.4 km/s |
| Proper motion (μ) | RA: 100.18 mas/yr Dec.: -39.33 mas/yr |
| Parallax (π) | 67.71 ± 0.75 mas |
| Distance | 48.2 ± 0.5 ly (14.8 ± 0.2 pc) |
| Absolute magnitude (MV) | 3.25[1] |
| Details | |
| Mass | 1.2 M☉ |
| Temperature | 7,000 K |
| Metallicity | ~25% |
| Rotational velocity (v sin i) | 16 km/s |
| Other designations | |
Alpha Corvi (α Crv, α Corvi) is a star in the constellation Corvus. It has the traditional names Alchiba (Arabic ألخبا al hibaa "tent") or Al Minliar al Ghurab .
Al Minliar al Ghurab (Arabic ألمنخر ألغرب almanxar al ghuurab) or Minkar al Ghyrab appeared in the catalogue of stars in the Calendarium of Al Achsasi al Mouakket, which was translated into Latin as Rostrum Corvi [beak of the crow].[2]
In Chinese astronomy, Alchiba is called 右轄, Pinyin: Yòuxiá, meaning Right Linchpin, because this star is marking itself and stand alone in Right Linchpin asterism, Chariot mansion (see : Chinese constellation)[3]. 右轄 (Yòuxiá), westernized into Yew Hea by R.H. Allen.[4]
Alchiba belongs to the spectral class F0 and has apparent magnitude +4.00. It is 48 light years from Earth. This star is suspected of being a spectroscopic binary, although this has not yet been confirmed.
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[edit] In culture
USS Alchiba (AKA-6) is once of United States navy ship
[edit] See also
[edit] References
- ^ a b Elgarøy, Øystein; Engvold, Oddbjørn; Lund, Niels (March 1999), "The Wilson-Bappu effect of the MgII K line - dependence on stellar temperature, activity and metallicity", Astronomy and Astrophysics 343: 222–228, Bibcode 1999A&A...343..222E
- ^ Knobel, E. B. (June 1895), "Al Achsasi Al Mouakket, on a catalogue of stars in the Calendarium of Mohammad Al Achsasi Al Mouakket", Monthly Notices of the Royal Astronomical Society 55: 429, Bibcode 1895MNRAS..55..429K
- ^ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 22 日
- ^ Allen, Richard Hinckley, Star Names — Their Lore and Meaning: Corvus, http://penelope.uchicago.edu/Thayer/E/Gazetteer/Topics/astronomy/_Texts/secondary/ALLSTA/Corvus*.html
[edit] External links
- SIMBAD Query Result
- Alpha Corvi by Professor Jim Kaler.
- ARICNS
- nStars database entry
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