Astronomy:HD 141846
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Short description: Star in the constellation Apus
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Apus |
| Right ascension | 15h 59m 55.13299s[1] |
| Declination | −78° 01′ 38.1884″[1] |
| Apparent magnitude (V) | 6.393[2] (6.92 + 7.53)[3] |
| Characteristics | |
| Spectral type | F3IV[4] |
| B−V color index | 0.38[5] |
| Astrometry | |
| Proper motion (μ) | RA: −1.99±0.63[1] mas/yr Dec.: −72.24±0.81[1] mas/yr |
| Parallax (π) | 11.37 ± 0.61[1] mas |
| Distance | 290 ± 20 ly (88 ± 5 pc) |
| Absolute magnitude (MV) | 1.67[2] |
| Details | |
| primary | |
| Radius | 1.66 R☉ |
| Luminosity | 16.8[6] L☉ |
| Temperature | 6,637[6] K |
| Metallicity [Fe/H] | −0.18[2] dex |
| Age | 1.3[2] Gyr |
| secondary | |
| Mass | 0.78[7] M☉ |
| Radius | 1.66[7] R☉ |
| Luminosity | 5.2[7] L☉ |
| Surface gravity (log g) | 3.89[7] cgs |
| Temperature | 6,760[7] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 141846 is a double star in the southern constellation of Apus. As of 1996, the pair have an angular separation of 0.7″ along a position angle of 332°.[3]
References
- ↑ 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, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
- ↑ 2.0 2.1 2.2 2.3 Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics 501 (3): 941–947, doi:10.1051/0004-6361/200811191, Bibcode: 2009A&A...501..941H.
- ↑ 3.0 3.1 Mason, B. D. et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal 122 (6): 3466–3471, doi:10.1086/323920, Bibcode: 2001AJ....122.3466M, http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/wds, retrieved 2015-07-22.
- ↑ Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode: 1978mcts.book.....H.
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T. et al. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27–L30. doi:10.1888/0333750888/2862. Bibcode: 2000A&A...355L..27H.
- ↑ 6.0 6.1 McDonald, I. et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society 427 (1): 343–57, doi:10.1111/j.1365-2966.2012.21873.x, Bibcode: 2012MNRAS.427..343M.
- ↑ 7.0 7.1 7.2 7.3 7.4 Stassun, Keivan G. et al. (September 2018), "The TESS Input Catalog and Candidate Target List", The Astronomical Journal 156 (3): 102, doi:10.3847/1538-3881/aad050, ISSN 0004-6256, Bibcode: 2018AJ....156..102S.
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