HD 82886
HD 82886 is an evolved subgiant star[3] in the constellation Leo Minor. With an apparent magnitude 7.63,[6] it is too faint to be seen with the unaided eye.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Leo Minor |
| Right ascension | 09h 35m 45.1840s[1] |
| Declination | +34° 46′ 50.673″[1] |
| Apparent magnitude (V) | 7.63[2] |
| Characteristics | |
| Spectral type | G0 |
| Astrometry | |
| Radial velocity (Rv) | 12.73[1] km/s |
| Proper motion (μ) | RA: 16.359[1] mas/yr Dec.: -35.369[1] mas/yr |
| Parallax (π) | 7.8422 ± 0.0684 mas[1] |
| Distance | 416 ± 4 ly (128 ± 1 pc) |
| Absolute magnitude (MV) | +2.3[3] |
| Details | |
| Mass | 2.53[4] M☉ |
| Radius | 5.26[4] R☉ |
| Luminosity | 11.9[5] L☉ |
| Surface gravity (log g) | 3.40[4] cgs |
| Temperature | 4,953[4] K |
| Metallicity [Fe/H] | -0.31[4] dex |
| Age | 3.4[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Extrasolar Planets Encyclopaedia | data |
Planetary system
A planet 1.3 times the mass of Jupiter and orbiting at an approximate distance of 1.65 astronomical units (AU) every 705 days was discovered in 2011.[3]
HD 82886, and its planet HD 82886b, were chosen as part of the 2019 NameExoWorlds campaign organised by the International Astronomical Union, which assigned each country a star and planet to be named. HD 82886 was assigned to Albania. The winning proposal named the star Illyrian after the ancient people of the Balkans region (including Albania), and the planet Arber after the medieval term for the inhabitants of Albania.[7]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b (Arber) | ≥1.3±0.1 MJ | 1.65±0.06 | 705±34 | <0.27 | — | — |
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. Gaia DR2 record for this source at VizieR.
- 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 and Astrophysics. 355: L27. Bibcode:2000A&A...355L..27H.
- Johnson, John Asher; Clanton, Christian; Howard, Andrew W.; Bowler, Brendan P.; Henry, Gregory W.; Marcy, Geoffrey W.; Crepp, Justin R.; Endl, Michael; Cochran, William D.; MacQueen, Phillip J.; Wright, Jason T.; Isaacson, Howard (2011). "Retired a Stars and Their Companions. Vii. 18 New Jovian Planets". The Astrophysical Journal Supplement Series. 197 (2): 26. arXiv:1108.4205. Bibcode:2011ApJS..197...26J. doi:10.1088/0067-0049/197/2/26. S2CID 15088371.
- 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.
- Bonfanti, A.; Ortolani, S.; Piotto, G.; Nascimbeni, V. (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. S2CID 54555839.
- "HD 82886". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-05-31.
- "Albania". NameExoworlds. Retrieved 2019-12-18.
- HD 82886 b on exoplanet.eu
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