HD 141846
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Apus[1] |
| Right ascension | 15h 59m 55.13299s[2] |
| Declination | −78° 01′ 38.1884″[2] |
| Apparent magnitude (V) | 6.393[3] (6.92 + 7.53)[4] |
| Characteristics | |
| Spectral type | F3IV[5] (F3IV + F5[6]) |
| B−V color index | 0.38[7] |
| Astrometry | |
| Proper motion (μ) | RA: −1.99±0.63[2] mas/yr Dec.: −72.24±0.81[2] mas/yr |
| Parallax (π) | 11.37±0.61 mas[2] |
| Distance | 290 ± 20 ly (88 ± 5 pc) |
| Absolute magnitude (MV) | 1.67[3] |
| Details | |
| primary | |
| Radius | 1.66[citation needed] R☉ |
| Temperature | 6,637[8] K |
| Metallicity [Fe/H] | −0.18[3] dex |
| Age | 1.3[3] Gyr |
| secondary | |
| Mass | 0.78[9] M☉ |
| Radius | 1.66[9] R☉ |
| Luminosity | 5.2[9] L☉ |
| Surface gravity (log g) | 3.89[9] cgs |
| Temperature | 6,760[9] K |
| Other designations | |
| CD−77°764, HD 141846, HIP 78360, SAO 257341 | |
| 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°.[4]
References
[edit]- ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
- 1 2 3 4 5 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.
- 1 2 3 4 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.
- 1 2 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.
- ↑ Kharchenko, N. V. (2001). "All-sky compiled catalogue of 2.5 million stars". Kinematika I Fizika Nebesnykh Tel. 17 (5): 409. Bibcode:2001KFNT...17..409K.
- ↑ 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.
- ↑ 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.
- 1 2 3 4 5 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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