HAT-P-19

HAT-P-19
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 00h 38m 04.0136s[1]
Declination +34° 42′ 41.554″[1]
Apparent magnitude (V) 12.901[2]
Characteristics
Spectral type K1V
Astrometry
Radial velocity (Rv)−20.27 km/s
Proper motion (μ) RA: −26.745(11) mas/yr[1]
Dec.: −32.568(10) mas/yr[1]
Parallax (π)4.9567 ± 0.0137 mas[1]
Distance658 ± 2 ly
(201.7 ± 0.6 pc)
Details[3]
Mass0.863+0.029
−0.025 M☉
Radius0.851±0.013 R☉
Luminosity0.37+0.08
−0.06[4] L☉
Surface gravity (log g)4.514+0.019
−0.017 cgs
Temperature5049+42
−65 K
Metallicity0.283+0.081
−0.079
Rotation14.66±0.03 d[4]
Rotational velocity (v sin i)0.7±0.5[4] km/s
Age8.8±5.2[4] Gyr
Other designations
Gaia DR2 3654266795168165128, 2MASS J00380401+3442416[5]
Database references
SIMBADdata

HAT-P-19 is a K-type main-sequence star about 658 light-years away. The star is old yet metal enriched, having amount of heavy elements 250% of solar abundance.[4] The survey in 2012 have failed to find any stellar companions to HAT-P-19.[6]

  1. ^ a b c d Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Hartman2010 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Wang2021 was invoked but never defined (see the help page).
  4. ^ a b c d e Everett, Mark E.; Howell, Steve B.; Silva, David R.; Szkody, Paula (2013), "Spectroscopy of Faint Kepler Mission Exoplanet Candidate Host Stars", The Astrophysical Journal, 771 (2): 107, arXiv:1305.0578, Bibcode:2013ApJ...771..107E, doi:10.1088/0004-637X/771/2/107, S2CID 119270620
  5. ^ Cite error: The named reference simbad was invoked but never defined (see the help page).
  6. ^ Ginski, C.; Mugrauer, M.; Seeliger, M.; Eisenbeiss, T. (2012), "A lucky imaging multiplicity study of exoplanet host stars", Monthly Notices of the Royal Astronomical Society, 421 (3): 2498–2509, arXiv:1202.4586, Bibcode:2012MNRAS.421.2498G, doi:10.1111/j.1365-2966.2012.20485.x, S2CID 118573795