Alpha Horologii

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Alpha Horologii
Observation data
Epoch J2000      Equinox J2000
Constellation Horologium
Right ascension 04h 14m 00.11445s[1]
Declination −42° 17′ 39.7232″ [1]
Apparent magnitude (V) +3.86
Characteristics
Spectral type K2 III
Astrometry
Radial velocity (Rv) 21.60 ± 0.3 km/s
Proper motion (μ) RA: 42.02 ± 0.11[1] mas/yr
Dec.: -203.55 ± 0.12[1] mas/yr
Parallax (π) 28.36 ± 0.12[1] mas
Distance 115.0 ± 0.5 ly
(35.3 ± 0.1 pc)
Absolute bolometric
magnitude
 (Mbol)
1.08[2]
Details
Mass 1.55[2] M
Luminosity 37.61[3] L
Temperature 5028 K[3] K
Metallicity [Fe/H] -0.02[2] dex
Other designations
HD 26967, HIP 19747, HR 1326, CD−42° 1425, SAO 216710.[4]
Database references
SIMBAD data

Alpha Horologii (α Hor, α Horologii) is an orange giant star in the constellation Horologium. Located 115.0 ± 0.5 light-years distant from Earth,[1] it shines with a luminosity approximately 37.61 times that of the Sun and has a surface temperature of 5028 K.[3]

References[edit]

  1. ^ a b c d e f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  2. ^ a b c Liu, Y. J.; Zhao, G.; Shi, J. R.; Pietrzyński, G.; Gieren, W. (2007). "The abundances of nearby red clump giants". Monthly Notices of the Royal Astronomical Society. 382 (2): 553–66. Bibcode:2007MNRAS.382..553L. doi:10.1111/j.1365-2966.2007.11852.x. 
  3. ^ a b c McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. arXiv:1208.2037Freely accessible. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x. 
  4. ^ "Alpha Horologii". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 17 March 2016.