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HAT-P-26

HAT-P-26 / Guahayona
Observation data
Epoch J2000      Equinox J2000
Constellation Virgo
Right ascension 14h 12m 37.53311s[1]
Declination +04° 03′ 36.1166″[1]
Apparent magnitude (V) 11.76[2]
Characteristics
Evolutionary stage Main sequence
Spectral type K1V[3]
Astrometry
Radial velocity (Rv)14.10±0.39[1] km/s
Proper motion (μ) RA: 37.735 mas/yr[1]
Dec.: -142.816 mas/yr[1]
Parallax (π)6.9985 ± 0.0204 mas[1]
Distance466 ± 1 ly
(142.9 ± 0.4 pc)
Details[3]
Mass0.816±0.033 M☉
Radius0.788+0.098
−0.043 R☉
Luminosity0.38+0.16
−0.06 L☉
Surface gravity (log g)4.56±0.06 cgs
Temperature5079±88 K
Metallicity−0.04±0.08
Rotational velocity (v sin i)1.8±0.5 km/s
Age9.0+3.0
−4.9 Gyr
Other designations
Guahayona, Gaia DR2 3668036348641580288, TYC 320-1027-1, GSC 0320-01027, 2MASS J14123753+0403359[2]
Database references
SIMBADdata

HAT-P-26 is a K-type main-sequence star located about 466 light-years (143 parsecs) away in the constellation of Virgo. A survey in 2015 did not find any stellar companions in orbit around it,[4] although a red dwarf companion with a temperature 4000+100
−350 K is suspected on wide orbit.[5]

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference simbad was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Hartman2010 was invoked but never defined (see the help page).
  4. ^ Wöllert, Maria; Brandner, Wolfgang; Bergfors, Carolina; Henning, Thomas (2015), "A Lucky Imaging search for stellar companions to transiting planet host stars", Astronomy & Astrophysics, 575: A23, arXiv:1507.01938, Bibcode:2015A&A...575A..23W, doi:10.1051/0004-6361/201424091, S2CID 119250579
  5. ^ Piskorz, Danielle; Knutson, Heather A.; Ngo, Henry; Muirhead, Philip S.; Batygin, Konstantin; Crepp, Justin R.; Hinkley, Sasha; Morton, Timothy D. (2015), "Friends of Hot Jupiters. III. An Infrared Spectroscopic Search for Low-Mass Stellar Companions", The Astrophysical Journal, 814 (2): 148, arXiv:1510.08062, Bibcode:2015ApJ...814..148P, doi:10.1088/0004-637X/814/2/148, S2CID 11525988

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