Summary
HD 96167 is a double star system with an exoplanetary companion in the southern constellation of Crater. The apparent visual magnitude of this system is 8.09,[2] which is too faint to be readily visible to the naked eye. It is located at a distance of approximately 279 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +12 km/s.[1]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Crater |
| Right ascension | 11h 05m 15.0688s[1] |
| Declination | –10° 17′ 28.6947″[1] |
| Apparent magnitude (V) | 8.09[2] |
| Characteristics | |
| Spectral type | G5V[3] + M4[4] |
| B−V color index | 0.731±0.017[2] |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | +12.05±0.19[1] km/s |
| Proper motion (μ) | RA: −50.494±0.081[1] mas/yr Dec.: −9.496±0.072[1] mas/yr |
| Parallax (π) | 11.6947 ± 0.0565 mas[1] |
| Distance | 279 ± 1 ly (85.5 ± 0.4 pc) |
| Absolute magnitude (MV) | 3.41[2] |
| Position (relative to HD 96167 A)[4] | |
| Component | HD 96167 B |
| Epoch of observation | 2013 |
| Angular distance | 5.873±0.018″ |
| Position angle | 297.06±0.10° |
| Projected separation | 506 AU |
| Details[5] | |
| HD 96167 A | |
| Mass | 1.16±0.05 M☉ |
| Radius | 1.73±0.18 R☉ |
| Luminosity | 3.39+1.18 −0.88 L☉ |
| Surface gravity (log g) | 4.15±0.06 cgs |
| Temperature | 5,749±25 K |
| Metallicity [Fe/H] | 0.35±0.05 dex |
| Rotational velocity (v sin i) | 1.03±0.36 km/s |
| Age | 5.62±0.83 Gyr |
| HD 96167 B | |
| Mass | 0.23[4] M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
The primary component, designated HD 96167 A, is an ordinary G-type main-sequence star with a stellar classification of G5V.[3] It has also been classified as a subgiant star,[7] suggesting it is somewhat more evolved having exhausted the hydrogen at its core. The star has an absolute magnitude of 3.41,[2] placing it about a magnitude above the main sequence.[7] It is metal rich and is around six billion years old.[5] This star is larger, brighter and more massive than the Sun.
A faint co-moving stellar companion, component HD 96167 B, was detected in 2014 at a projected separation 506 AU from the primary. The existence of additional stellar companions was ruled out at projected distances from 51 to 740 astronomical units.[4]
In 2009 it was found that primary star HD 96167 A is orbited by a Jovian planet on an eccentric orbit.[7]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥0.71±0.18 MJ | 1.332±0.092 | 498.1±0.81 | 0.681±0.033 | — | — |
See also edit
References edit
- ^ a b c d e f g 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 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, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
- ^ a b c d Mugrauer, M.; Ginski, C. (12 May 2015). "High-contrast imaging search for stellar and substellar companions of exoplanet host stars". Monthly Notices of the Royal Astronomical Society. 450 (3): 3127–3136. Bibcode:2015MNRAS.450.3127M. doi:10.1093/mnras/stv771. hdl:1887/49340. Retrieved 19 June 2020.
- ^ a b Jofré, E.; et al. (2015). "Stellar parameters and chemical abundances of 223 evolved stars with and without planets". Astronomy & Astrophysics. 574: A50. arXiv:1410.6422. Bibcode:2015A&A...574A..50J. doi:10.1051/0004-6361/201424474. S2CID 53666931.
- ^ "HD 96167". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-09-21.
- ^ a b c 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.
- ^ Ment, Kristo; et al. (2018). "Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810". The Astronomical Journal. 156 (5). 213. arXiv:1809.01228. Bibcode:2018AJ....156..213M. doi:10.3847/1538-3881/aae1f5. S2CID 119243619.