HD 231701
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Sagitta |
Right ascension | 19h 32m 04.1609s[1] |
Declination | +16° 28′ 27.443″[1] |
Apparent magnitude (V) | 9.093[2] |
Characteristics | |
Spectral type | F8 V[2] |
B−V color index | 0.539[2] |
Astrometry | |
Radial velocity (Rv) | ±0.22 −63.48[2] km/s |
Proper motion (μ) | RA: ±0.054 +63.470[1] mas/yr Dec.: ±0.055 15.475[1] mas/yr |
Parallax (π) | 9.09 ± 0.29[1] mas |
Distance | 360 ± 10 ly (110 ± 4 pc) |
Absolute magnitude (MV) | 3.64[2] |
Details[3] | |
Mass | ±0.08 1.15 M☉ |
Radius | ±0.1 2.6[4] R☉ |
Luminosity | 3.06[2] L☉ |
Surface gravity (log g) | ±0.03 4.37 cgs |
Temperature | ±27 6,224 K |
Metallicity [Fe/H] | ±0.02 0.04 dex |
Rotational velocity (v sin i) | 4.26[5] km/s |
Age | 1.35[5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 231701 is a yellow-white dwarf star approximately 360 light years away in the constellation of Sagitta. It is a 9th magnitude star, meaning the star is not visible to the naked eye, but powerful binoculars or a small telescope is needed to view the star. It is an F-type main-sequence star, a type of hydrogen-fusing star that is hotter, more massive, and brighter than our Sun.
Planetary system
In 2007, the N2K Consortium used the radial velocity technique to discover a Jupiter-like planet orbiting at 0.55 AU around the star.[7]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | >1.08 MJ | 0.55 | 142 ± 2.8 | 0.19 ± 0.05 | — | — |
See also
References
- 1 2 3 4 5 Gaia Collaboration; et al. (November 2016), "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties", Astronomy & Astrophysics, 595: 23, arXiv:1609.04172, Bibcode:2016A&A...595A...2G, doi:10.1051/0004-6361/201629512, A2.
- 1 2 3 4 5 6 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.
- ↑ Santos, N. C.; et al. (2013). "SWEET-Cat: A catalogue of parameters for Stars With ExoplanETs". Astronomy and Astrophysics. 556. A150. arXiv:1307.0354. Bibcode:2013A&A...556A.150S. doi:10.1051/0004-6361/201321286.
- ↑ Bonfanti, A.; et al. (2015), "Revising the ages of planet-hosting stars", Astronomy & Astrophysics, 575 (A18): 17, arXiv:1411.4302, Bibcode:2015A&A...575A..18B, doi:10.1051/0004-6361/201424951.
- 1 2 Delgado Mena, E.; et al. (April 2015), "Li abundances in F stars: planets, rotation, and Galactic evolution", Astronomy & Astrophysics, 576: 24, arXiv:1412.4618, Bibcode:2015A&A...576A..69D, doi:10.1051/0004-6361/201425433, A69.
- ↑ "HD 231701 -- Star". SIMBAD Astronomical Database. Centre de données astronomiques de Strasbourg. Retrieved 2014-10-16.
- 1 2 Fischer, Debra A.; et al. (2007). "Five Intermediate-Period Planets from the N2K Sample". The Astrophysical Journal. 669 (2): 1336–1344. arXiv:0704.1191. Bibcode:2007ApJ...669.1336F. doi:10.1086/521869.
External links
- "HD 231701". The Extrasolar Planets Encyclopedia.
Coordinates:
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