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]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| 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 mas[1] |
| 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 |
References
edit- ^ a b c d e van Leeuwen, F. (November 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, S2CID 18759600.
- ^ a b c d 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, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 118577511.
- ^ a b Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466–3471, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22.
- ^ Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 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. Bibcode:2000A&A...355L..27H. doi:10.1888/0333750888/2862.
- ^ a b McDonald, I.; et al. (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, S2CID 118665352.
- ^ a b c d e Stassun, Keivan G.; et al. (September 2018), "The TESS Input Catalog and Candidate Target List", The Astronomical Journal, 156 (3): 102, arXiv:1706.00495, Bibcode:2018AJ....156..102S, doi:10.3847/1538-3881/aad050, ISSN 0004-6256.
External links
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