Alpha Corvi

Alpha Corvi
Observation data
Epoch J2000      Equinox J2000
Constellation Corvus
Right ascension 12h 08m 24.81652s[1]
Declination −24° 43′ 43.9504″[1]
Apparent magnitude (V) 4.03[2]
Characteristics
Spectral type F1 V[3]
U−B color index +0.00[2]
B−V color index +0.34[2]
Astrometry
Radial velocity (Rv)+3.0[4] km/s
Proper motion (μ) RA: 99.52[1] mas/yr
Dec.: −39.19[1] mas/yr
Parallax (π)66.95 ± 0.15[1] mas
Distance48.7 ± 0.1 ly
(14.94 ± 0.03 pc)
Absolute magnitude (MV)3.25[5]
Details
Surface gravity (log g)4.13 ± 0.05[6] cgs
Temperature7,041 ± 53[6] K
Metallicity [Fe/H]−0.19 ± 0.04[6] dex
Rotational velocity (v sin i)16.9 ± 1.5[7] 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.[8]

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).[9]

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),[10] 右轄 (Yòuxiá), westernized into Yew Hea by R.H. Allen.[11]

Alchiba belongs to the spectral class F1 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

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

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
  2. ↑ 2.0 2.1 2.2 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data. (SIMBAD), Bibcode:1986EgUBV........0M.
  3. ↑ Gray, R. O. et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal 132 (1): 161–170, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637.
  4. ↑ Andersen et al. (2004), "The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ~14000 F and G dwarfs", Publications of the Astronomical Society of Australia 21 (2): 129–133, Bibcode:2004PASA...21..129N, doi:10.1071/AS04013.
  5. ↑ 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.
  6. ↑ 6.0 6.1 6.2 Prugniel, P.; Vauglin, I.; Koleva, M. (2011). "The atmospheric parameters and spectral interpolator for the MILES stars". Astronomy & Astrophysics 531: A165. doi:10.1051/0004-6361/201116769.
  7. ↑ Ammler-von Eiff, M.; Reiners, A. (2012), "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?", Astronomy & Astrophysics 542: 31, arXiv:1204.2459, Bibcode:2012A&A...542A.116A, doi:10.1051/0004-6361/201118724, A116.
  8. ↑ "alf Crv -- Star", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), retrieved 2014-05-20.
  9. ↑ 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.
  10. ↑ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 22 日
  11. ↑ Allen, Richard Hinckley, Star Names — Their Lore and Meaning: Corvus.

External links