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 | |
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
- 1 2 3 4 5 6 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. - 1 2 3 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.
- 1 2 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.
- ↑ "Alpha Horologii". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 17 March 2016.
This article is issued from Wikipedia - version of the 5/19/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.