HD 114386
HD 114386 is a 9th magnitude star located approximately 91 light years away in the constellation of Centaurus. It is an orange dwarf, and rather dim compared to the Sun. It can be seen with a telescope or good binoculars.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 13h 10m 39.8240s[1] |
| Declination | −35° 03′ 17.215″[1] |
| Apparent magnitude (V) | 8.73[2] |
| Characteristics | |
| Spectral type | K3V[2] |
| B−V color index | 0.982[2] |
| Astrometry | |
| Radial velocity (Rv) | 33.350 ± 0.0004[3] km/s |
| Proper motion (μ) | RA: −137.097[1] mas/yr Dec.: −324.880[1] mas/yr |
| Parallax (π) | 35.7823 ± 0.0515 mas[1] |
| Distance | 91.2 ± 0.1 ly (27.95 ± 0.04 pc) |
| Absolute magnitude (MV) | 6.49[2] |
| Details | |
| Mass | 0.60 ± 0.09[4] M☉ |
| Radius | 0.76 ± 0.02[4] R☉ |
| Luminosity | 0.29[2] L☉ |
| Surface gravity (log g) | 4.45 ± 0.06[4] cgs |
| Temperature | 4836 ± 18[4] K |
| Metallicity [Fe/H] | −0.05[4] dex |
| Rotational velocity (v sin i) | 1.0[2] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Extrasolar Planets Encyclopaedia | data |
In 2004, the Geneva Extrasolar Planet Search Team announced the discovery of an extrasolar planet orbiting the star.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.37 MJ | 1.65 [6] | 445 | 0.12 | — | — |
| c | 1.19 MJ | 1.83 | 1046 | 0.06 | — | — |
References
- 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.
- Mayor, M.; et al. (2004). "The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE". Astronomy and Astrophysics. 415 (1): 391–402. arXiv:astro-ph/0310316. Bibcode:2004A&A...415..391M. doi:10.1051/0004-6361:20034250. S2CID 5233877.
- Soubiran, C.; Jasniewicz, G.; Chemin, L.; Zurbach, C.; Brouillet, N.; Panuzzo, P.; Sartoretti, P.; Katz, D.; Le Campion, J. -F.; Marchal, O.; Hestroffer, D.; Thévenin, F.; Crifo, F.; Udry, S.; Cropper, M.; Seabroke, G.; Viala, Y.; Benson, K.; Blomme, R.; Jean-Antoine, A.; Huckle, H.; Smith, M.; Baker, S. G.; Damerdji, Y.; Dolding, C.; Frémat, Y.; Gosset, E.; Guerrier, A.; Guy, L. P.; et al. (2018). "Gaia Data Release 2. The catalogue of radial velocity standard stars". Astronomy and Astrophysics. 616: A7. arXiv:1804.09370. Bibcode:2018A&A...616A...7S. doi:10.1051/0004-6361/201832795. S2CID 52952408.
- Stassun, Keivan G.; Collins, Karen A.; Gaudi, B. Scott (2017). "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.
- "HD 114386". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-06-25.
- "Confirmed Planets". Archived from the original on 12 December 2012.
External links
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