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Lambda Horologii

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Lambda Horologii
Observation data
Epoch J2000      Equinox J2000
Constellation Horologium
Right ascension 02h 24m 53.91014s[1]
Declination −60° 18′ 43.0132″ [1]
Apparent magnitude (V) +5.372
Characteristics
Spectral type F2III[2]
Astrometry
Radial velocity (Rv)6.00 ± 7.4 km/s
Proper motion (μ) RA: -71.69 ± 0.18[1] mas/yr
Dec.: -131.28 ± 0.21[1] mas/yr
Parallax (π)20.25 ± 0.18 mas[1]
Distance161 ± 1 ly
(49.4 ± 0.4 pc)
Details
Mass1.76[3] M☉
Temperature6848 K[3] K
Metallicity [Fe/H]-0.12[3] dex
Rotational velocity (v sin i)+140[2] km/s
Other designations
HD 15233, HIP 11258, HR 714, SAO 248555.[4]


Lambda Horologii is a yellow-white giant star in the constellation Horologium. Analysis of its temperature and metallicity gives it a mass 1.76 times that of the Sun, a surface temperature of 6848 K, and an age of 1.4 billion years.[3] Its rotational velocity is 140 km/second and has an oblateness of 0.17.[2]

References

  1. ^ a b c d e van Leeuwen, F. (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. ^ a b c Belle, G. T. (2012). "Interferometric observations of rapidly rotating stars". The Astronomy and Astrophysics Review. 20: 51. arXiv:1204.2572. Bibcode:2012A&ARv..20...51V. doi:10.1007/s00159-012-0051-2.
  3. ^ a b c d Casagrande, L.; Schönrich, R.; Asplund, M.; Cassisi, S.; Ramírez, I.; Meléndez, J.; Bensby, T.; Feltzing, S. (2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey". Astronomy & Astrophysics. 530 (A138): 21. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276.
  4. ^ "Lambda Horologii". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 March 2016.
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