HD 175167
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Pavo |
Right ascension | 19h 00m 00.83454s[1] |
Declination | –69° 56′ 39.2705″[1] |
Apparent magnitude (V) | 8.01[2] |
Characteristics | |
Spectral type | G5IV/V[3] |
Apparent magnitude (B) | 8.761[2] |
Apparent magnitude (J) | 6.713±0.019[2] |
Apparent magnitude (H) | 6.381±0.018[2] |
Apparent magnitude (K) | 6.288±0.018[2] |
B−V color index | 0.751±0.002[2] |
Astrometry | |
Radial velocity (Rv) | 4.81±0.13[1] km/s |
Proper motion (μ) | RA: −7.044[1] mas/yr Dec.: −191.511[1] mas/yr |
Parallax (π) | 14.0386 ± 0.0332[1] mas |
Distance | 232.3 ± 0.5 ly (71.2 ± 0.2 pc) |
Absolute magnitude (MV) | 3.88[2] |
Details | |
Mass | 1.17±0.09[4] M☉ |
Radius | 1.75±0.04[5] R☉ |
Luminosity | 2.857[1] L☉ |
Surface gravity (log g) | 4.09±0.09[4] cgs |
Temperature | 5,635±28[4] K |
Metallicity [Fe/H] | +0.28±0.02[4] dex |
Rotational velocity (v sin i) | 2.6[6] km/s |
Other designations | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
Extrasolar Planets Encyclopaedia | data |
HD 175167 is a star with an exoplanet companion in the southern constellation of Pavo. It is too faint to be visible with the naked eye at an apparent visual magnitude of 8.01.[2] The system is located at a distance of 232 light years from the Sun based on parallax measurements, and it is drifting further away with a radial velocity of 5 km/s.[1] It shows a high proper motion, traversing the celestial sphere at an angular rate of 0.190 arcsec yr−1.[8]
This yellow-hued star has a stellar classification of G5IV/V,[3] which, together with the star's absolute magnitude of 3.88,[2] is consistent with a star that is in the early stages of evolving off the main sequence.[9] It has a high metallicity and is spinning with a projected rotational velocity of 2.6 km/s.[6] The star has 1.2[4] times the mass of the Sun and 1.75[5] times the Sun's girth. It is radiating 2.9[1] times the Sun's luminosity from its photosphere at an effective temperature of 5,635 K.[4]
A Jovian planetary companion was discovered in 2010 by a team of the Magellan Planet Search Program, led by Pamela Arriagada. Designated HD 175167 b, their Doppler velocity data (taken over a five year period) indicates the planet has an orbital period of 3.5 years at a distance of 2.40 AU (359 Gm) from the host star with an eccentricity (ovalness) of 0.54.[9] Since the inclination of the orbital plane is unknown, it is only possible to deduce a lower bound on the planet's mass. It is at least 7.8 times as massive as Jupiter.[9] In a 2013 paper, Robert A. Wittenmyer and colleagues reviewed the data of this and many other systems with one or two planets for possible additional planets, but were unable to find any evidence of any.[10]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥7.8 ± 3.5 MJ | 2.40 ± 0.05 | 1,290 ± 22 | 0.54 ± 0.09 | — | — |
See also[]
References[]
- ^ a b c d e f g h i 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 c d e f g h i 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. S2CID 119257644.
- ^ a b Houk, Nancy; Cowley, A. P. (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan. Bibcode:1978mcts.book.....H.
- ^ a b c d e f Santos, N. C.; et al. (August 2013). "SWEET-Cat: A catalogue of parameters for Stars With ExoplanETs. I. New atmospheric parameters and masses for 48 stars with planets". Astronomy & Astrophysics. 556: 11. arXiv:1307.0354. Bibcode:2013A&A...556A.150S. doi:10.1051/0004-6361/201321286. S2CID 55237847. A150.
- ^ a b Stassun, Keivan G.; et al. (2016). "Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes". The Astronomical Journal. 153 (3): 136. arXiv:1609.04389. Bibcode:2017AJ....153..136S. doi:10.3847/1538-3881/aa5df3. S2CID 119219062.
- ^ a b Jenkins, J. S.; et al. (July 2011). "Chromospheric activities and kinematics for solar type dwarfs and subgiants: analysis of the activity distribution and the AVR". Astronomy & Astrophysics. 531: 15. arXiv:1103.0584. Bibcode:2011A&A...531A...8J. doi:10.1051/0004-6361/201016333. S2CID 55800969. A8.
- ^ "HD 175167". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-10-11.
- ^ Luyten, W. J. (June 1995). "VizieR Online Data Catalog: NLTT Catalogue (Luyten, 1979)". VizieR Online Data Catalog. Bibcode:1995yCat.1098....0L.
- ^ a b c d Arriagada, Pamela; et al. (2010). "Five Long-period Extrasolar Planets in Eccentric orbits from the Magellan Planet Search Program". The Astrophysical Journal. 711 (2): 1229–35. arXiv:1001.4093. Bibcode:2010ApJ...711.1229A. doi:10.1088/0004-637X/711/2/1229. S2CID 118682009.
- ^ Wittenmyer, Robert A.; Wang, Songhu; Horner, Jonathan; Tinney, C. G.; Butler, R. P.; Jones, H. R. A.; O'Toole, S. J.; Bailey, J.; Carter, B. D.; Salter, G. S.; Wright, D.; Zhou, Ji-Lin (2013). "Forever alone? Testing single eccentric planetary systems for multiple companions". The Astrophysical Journal Supplement Series. 208 (1): 2. arXiv:1307.0894. Bibcode:2013ApJS..208....2W. doi:10.1088/0067-0049/208/1/2. S2CID 14109907.
Coordinates: 19h 00m 00.84s, −69° 56′ 39.3″
- G-type main-sequence stars
- G-type subgiants
- Planetary systems with one confirmed planet
- Pavo (constellation)
- Durchmusterung objects
- Henry Draper Catalogue objects
- Hipparcos objects