Wikipedia
HD 16175
HD 16175 is a 7th magnitude G-type star with temperature about 6000 K located approximately 196 light-years away[1] in the Andromeda constellation. This star is only visible through binoculars or better equipment; it is also 3.3 times more luminous, is 1.34 times more massive, and has a radius 1.66 times bigger than our local star.[5]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 02h 37m 01.9112s[1] |
| Declination | +42° 03′ 45.4696″[1] |
| Apparent magnitude (V) | 7.28[2] |
| Characteristics | |
| Spectral type | F8 IV[3] |
| B−V color index | 0.64[2] |
| Astrometry | |
| Proper motion (μ) | RA: −38.835±0.085[1] mas/yr Dec.: −41.306±0.081[1] mas/yr |
| Parallax (π) | 16.6775 ± 0.0684 mas[1] |
| Distance | 195.6 ± 0.8 ly (60.0 ± 0.2 pc) |
| Absolute magnitude (MV) | 3.40[4] |
| Details | |
| Mass | 1.34 ± 0.01[5] M☉ |
| Radius | 1.66 ± 0.04[5] R☉ |
| Luminosity | 3.3 ± 0.01[5] L☉ |
| Surface gravity (log g) | 4.12 ± 0.03[5] cgs |
| Temperature | 6048 ± 35[5] K |
| Age | 3.2 ± 0.2[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
The star HD 16175 is named Buna. The name was selected in the NameExoWorlds campaign by Ethiopia, during the 100th anniversary of the IAU. Buna is the commonly used word for coffee in Ethiopia.[6][7]
Planetary system
The extrasolar planet HD 16175 b was published in the June 2009 issue of the Publications of the Astronomical Society of the Pacific.[4]
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >4.77±0.37 MJ | 2.148±0.076 | 995.4±2.8 | 0.637±0.020 | — | — |
See also
References
- ^ a b c d e f 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. Gaia DR2 record for this source at VizieR.
- ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy & Astrophysics, 355: L27–L30, Bibcode:2000A&A...355L..27H.
- ^ Van Belle, Gerard T.; von Braun, Kaspar (2009). "Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars". The Astrophysical Journal. 694 (2): 1085–1098. arXiv:0901.1206. Bibcode:2009ApJ...694.1085V. doi:10.1088/0004-637X/694/2/1085. S2CID 18370219.
- ^ a b Peek, John Asher; et al. (2009). "Old, rich, and eccentric: two jovian planets orbiting evolved metal-rich stars". Publications of the Astronomical Society of the Pacific. 121 (880): 613–620. arXiv:0904.2786. Bibcode:2009PASP..121..613P. doi:10.1086/599862. S2CID 12042779.
- ^ a b c d e f g Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951. S2CID 54555839.
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
- ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
- ^ Díaz, Rodrigo F.; Rey, Javiera; Demangeon, Olivier D. S.; Hébrard, Guillaume; Boisse, Isabelle; Arnold, Luc; Astudillo-Defru, Nicola; Beuzit, Jean-Luc; Bonfils, Xavier; Borgniet, Simon; Bouchy, François; Bourrier, Vincent; Courcol, Bastien; Deleuil, Magali; Delfosse, Xavier; Ehrenreich, David; Forveille, Thierry; Lagrange, Anne-Marie; Mayor, Michel; Moutou, Claire; Pepe, Francesco; Queloz, Didier; Santerne, Alexandre; Santos, Nuno C.; Sahlmann, Johannes; Ségransan, Damien; Udry, Stéphane; Wilson, Paul A. (2016). "The SOPHIE search for northern extrasolar planets XI. Three new companions and an orbit update: Giant planets in the habitable zone". Astronomy & Astrophysics. 591: A146. arXiv:1604.07610. Bibcode:2016A&A...591A.146D. doi:10.1051/0004-6361/201628331. S2CID 3282336.
External links
- "Notes for star HD 16175". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-24.