Alpha Horologii

Alpha Horologii
Observation data; Epoch J2000 Equinox J2000
Constellation	Horologium
Right ascension	04h 14m 00.11445s
Declination	−42° 17′ 39.7232″
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 mas/yr ; Dec.: -203.55 ± 0.12 mas/yr
Parallax (π)	28.36 ± 0.12 mas
Distance	115.0 ± 0.5 ly ; (35.3 ± 0.1 pc)
Absolute bolometric; magnitude (Mbol)	1.08
Details
Mass	1.55 M☉
Luminosity	37.61 L☉
Temperature	5028 K K
Metallicity [Fe/H]	-0.02 dex
Other designations
	HD 26967, HIP 19747, HR 1326, IRAS 04123-4225, SAO 216710.

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

^ ^a ^b ^c ^d ^e ^f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
^ ^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.{{cite journal}}: CS1 maint: unflagged free DOI (link)
^ ^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:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.{{cite journal}}: CS1 maint: unflagged free DOI (link)
^ "Alpha Horologii". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 17 March 2016.

This giant-star-related article is a stub. You can help Wikipedia by expanding it.

[aaa474_2_653-1] ^ ^a ^b ^c ^d ^e ^f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.

[Liu_2007-2] 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.{{cite journal}}: CS1 maint: unflagged free DOI (link)

[Mcdonald-3] 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:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.{{cite journal}}: CS1 maint: unflagged free DOI (link)

[SIMBAD-4] "Alpha Horologii". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 17 March 2016.

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Observation data Epoch J2000 Equinox J2000
Constellation	Horologium
Right ascension	04^h 14^m 00.11445^s^[1]
Declination	−42° 17′ 39.7232″ ^[1]
Apparent magnitude (V)	+3.86
Characteristics
Spectral type	K2 III
Astrometry

Radial velocity (R_v)	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 mas^[1]
Distance	115.0 ± 0.5 ly (35.3 ± 0.1 pc)
Absolute bolometric magnitude (M_bol)	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, IRAS 04123-4225, SAO 216710.^[4]