Alpha Corvi

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Alpha Corvi
Observation data
Epoch J2000      Equinox J2000
Constellation Corvus
Right ascension 12h 08m 24.8s
Declination −24° 43′ 44″
Apparent magnitude (V) 4.00
Spectral type F2 IV[1]
U−B color index −0.02
B−V color index 0.33
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]
Mass 1.2 M
Temperature 7,000 K
Metallicity ~25%
Rotational velocity (v sin i) 16 km/s
Other designations
Alchiba, Al Minliar al Ghurab, Al Chiba, 1 Crv, CD −24° 10174, GCTP 2796.00, GJ 455.3, HD 105452, HIP 59199, HR 4623, SAO 180505.

Alpha Corvi (α Crv, α Corvi) is a star in the constellation Corvus. It has the traditional names Alchiba (Arabic ألخبا al-xibā "tent") or Al Minliar al Ghurab.

Al Minliar al Ghurab (Arabic ألمنخر ألغرب al-manxar al-ghurab) 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 it stands alone in the 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.

In culture[edit]

USS Alchiba (AKA-6) is a former United States Navy ship.

See also[edit]


  1. ^ 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 
  2. ^ 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, doi:10.1093/mnras/55.8.429 
  3. ^ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 22 日
  4. ^ Allen, Richard Hinckley, Star Names — Their Lore and Meaning: Corvus 

External links[edit]