HD 82886 is an evolved giant star in the constellation Leo Minor. With an apparent magnitude 7.63,[6] it is too faint to be seen with the unaided eye.

HD 82886
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[1] mas
Distance416 ± 4 ly
(128 ± 1 pc)
Absolute magnitude (MV)+2.3[3]
Details
Mass2.53[4] M
Radius5.26[4] R
Luminosity11.9[5] L
Surface gravity (log g)3.40[4] cgs
Temperature4,953[4] K
Metallicity [Fe/H]-0.31[4] dex
Age3.4[5] Gyr
Other designations
Illyrian, BD+35°2026, HD 82886, HIP 47087, SAO 61587
Database references
SIMBADdata
Extrasolar Planets
Encyclopaedia
data

Planetary systemEdit

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]

The HD 82886 planetary system[8]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
HD 82886 b ≥1.3±0.1 MJ 1.65±0.06 705±34 <0.27

ReferencesEdit

  1. ^ a b c d e f 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.
  2. ^ 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.
  3. ^ a b 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.
  4. ^ a b c d e 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.
  5. ^ a b 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.
  6. ^ SIMBAD HD 82886.
  7. ^ "Albania". NameExoworlds. Retrieved 2019-12-18.
  8. ^ HD 82886 b on exoplanet.eu