HD 98219

HD 98219 / Hunahpú
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Crater
Right ascension 11h 17m 47.5531s[1]
Declination –23° 58′ 31.4952″[1]
Apparent magnitude (V) +8.05[2]
Characteristics
Spectral type K0III/IV[3]
Astrometry
Radial velocity (Rv)-10.30[1] km/s
Proper motion (μ) RA: −130.770±0.068[1] mas/yr
Dec.: −16.887±0.050[1] mas/yr
Parallax (π)8.7662 ± 0.0489 mas[1]
Distance372 ± 2 ly
(114.1 ± 0.6 pc)
Absolute magnitude (MV)+2.6[4]
Details
Mass1.41[2] M☉
Radius4.6[2] R☉
Luminosity8.284[1] L☉
Surface gravity (log g)3.36[2] cgs
Temperature4,925[2] K
Age4[4] Gyr
Database references
SIMBADdata

HD 98219, also named Hunahpú, is a subgiant star in the constellation Crater. It has a confirmed exoplanet. At around 4 billion years old, it is a star around 1.3 times as massive as the Sun that has cooled and expanded to 4.5 times the Sun's diameter, brightening to be around 11 times as luminous.[4] The International Astronomical Union (IAU) gave the opportunity to Honduras to name the star Hunahpú as part of NameExoWorlds. Hunahpú was one of the twin gods who became the Sun in K'iche' (Quiché) Mayan mythology.[5]

  1. ^ a b c d e f g Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Luhn2019 was invoked but never defined (see the help page).
  3. ^ Houk, N.; Smith-Moore, M. (1988). Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. Volume 4, Declinations -26°.0 to -12°.0. Bibcode:1988mcts.book.....H.
  4. ^ a b c Cite error: The named reference Johnson2011 was invoked but never defined (see the help page).
  5. ^ "Name ExoWorlds Honduras". NameExoWorlds. IAU. Retrieved 21 December 2019.