Kepler-84

Kepler-84
Observation data
Epoch J2000      Equinox J2000
Constellation Cygnus
Right ascension 01h 37m 40.87964s[1]
Declination +12° 04′ 42.1742″[1]
Characteristics
Spectral type G3[2]
Astrometry
Proper motion (μ) RA: −0.150 mas/yr
Dec.: −2.872 mas/yr
Parallax (π)0.6929 ± 0.7043 mas
Details
Mass1[2] M☉
Radius1.2 R☉
Temperature5,755[3] K
Metallicity [Fe/H]+0.09 ± 0.04[2] dex
Age4.9[4] Gyr
Other designations
Kepler-84, KOI-1589, Gaia DR2 2073776859551124992, KIC 5301750, 2MASS J19530049+4029458[1]
Database references
SIMBADdata
ARICNSdata

Kepler-84 is a Sun-like star 4,700 light-years from the Sun. It is a G-type star. The stellar radius measurement has a large uncertainty of 48% as in 2017, complicating the modelling of the star.[5] The Kepler-84 star has two suspected stellar companions. Four red dwarfs are few arcseconds away and at least one is probably gravitationally bound to Kepler-84.[6] Another (which is a background star with a probability 0.5%) is a yellow star of mass 0.855M☉ on projected separations of 0.18±0.05″ or 0.26″ (213.6 AU).[7]

  1. ^ a b c Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference usq-edu was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference cern was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference arxiv was invoked but never defined (see the help page).
  5. ^ Ramos, X. S.; Charalambous, C.; Benítez-Llambay, P.; Beaugé, C. (2017), "Planetary migration and the origin of the 2:1 and 3:2 (near)-resonant population of close-in exoplanets", Astronomy & Astrophysics, 602: A101, arXiv:1704.06459, Bibcode:2017A&A...602A.101R, doi:10.1051/0004-6361/201629642, S2CID 119369796
  6. ^ Hirsch, Lea A.; Ciardi, David R.; Howard, Andrew W.; Everett, Mark E.; Furlan, Elise; Saylors, Mindy; Horch, Elliott P.; Howell, Steve B.; Teske, Johanna; Marcy, Geoffrey W. (2017), "ASSESSING THE EFFECT OF STELLAR COMPANIONS FROM HIGH-RESOLUTION IMAGING OF Kepler OBJECTS OF INTEREST", The Astronomical Journal, 153 (3): 117, arXiv:1701.06577, Bibcode:2017AJ....153..117H, doi:10.3847/1538-3881/153/3/117, S2CID 39321033
  7. ^ Kraus, Adam L.; Ireland, Michael J.; Huber, Daniel; Mann, Andrew W.; Dupuy, Trent J. (2016), "The Impact of Stellar Multiplicity on Planetary Systems. I. The Ruinous Influence of Close Binary Companions", The Astronomical Journal, 152 (1): 8, arXiv:1604.05744, Bibcode:2016AJ....152....8K, doi:10.3847/0004-6256/152/1/8, S2CID 119110229