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].

HD 16175
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[1] mas
Distance195.6 ± 0.8 ly
(60.0 ± 0.2 pc)
Absolute magnitude (MV)3.40[4]
Details
Mass1.34 ± 0.01[5] M☉
Radius1.66 ± 0.04[5] R☉
Luminosity3.3 ± 0.01[5] L☉
Surface gravity (log g)4.12 ± 0.03[5] cgs
Temperature6048 ± 35[5] K
Age3.2 ± 0.2[5] Gyr
Other designations
BD+41°496, HIP 12191, SAO 38170
Database references
SIMBADdata

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]

The HD 16175 planetary system[8]
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
  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. "Approved names". NameExoworlds. Retrieved 2020-01-02.
  7. "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
  8. Díaz, R. F.; et al. (2016). "The SOPHIE search for northern extrasolar planets. XI. Three new companions and an orbit update: Giant planets in the habitable zone". Astronomy and Astrophysics. 591. A146. arXiv:1604.07610. Bibcode:2016A&A...591A.146D. doi:10.1051/0004-6361/201628331.


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