HR 6875
Appearance
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Corona Australis |
Right ascension | 18h 24m 18.24148s[1] |
Declination | −44° 06′ 36.9008″[1] |
Apparent magnitude (V) | 5.24[2] |
Characteristics | |
Spectral type | B3 V[3] |
B−V color index | −0.163±0.004[2] |
Astrometry | |
Radial velocity (Rv) | +0.00±7.40[2] km/s |
Proper motion (μ) | RA: −2.949[1] mas/yr Dec.: −23.107[1] mas/yr |
Parallax (π) | 5.9327 ± 0.2341 mas[1] |
Distance | 550 ± 20 ly (169 ± 7 pc) |
Absolute magnitude (MV) | −0.63[2] |
Details | |
Mass | 6.2±0.1[4] M☉ |
Radius | 3.9[5] R☉ |
Luminosity (bolometric) | 1,098[6] L☉ |
Temperature | 20,350[6] K |
Age | 900±700[4] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HR 6875, previously known as Sigma Telescopii, is a single[8] star in the constellation Corona Australis. Its apparent magnitude is 5.24.
References
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051.
- ^ a b c d Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
- ^ Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
- ^ a b Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv:1007.4883, Bibcode:2011MNRAS.410..190T, doi:10.1111/j.1365-2966.2010.17434.x.
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: CS1 maint: unflagged free DOI (link) - ^ Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (2) (Third ed.): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451.
- ^ a b Hohle, M. M.; et al. (April 2010), "Masses and luminosities of O- and B-type stars and red supergiants", Astronomische Nachrichten, 331 (4): 349, arXiv:1003.2335, Bibcode:2010AN....331..349H, doi:10.1002/asna.200911355.
- ^ "HD 168905". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-07-14.
- ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x.
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: CS1 maint: unflagged free DOI (link)