K2-32

K2-32
Observation data
Epoch J2000      Equinox J2000
Constellation Ophiuchus[1]
Right ascension 16h 49m 42.2602s[2]
Declination −19° 32′ 34.151″[2]
Apparent magnitude (V) 12.31±0.02[3]
Characteristics
Spectral type G9V[4]
Apparent magnitude (J) 10.404±0.024[5]
Apparent magnitude (H) 9.993±0.025[5]
Apparent magnitude (K) 9.821±0.019[5]
Variable type Planetary transit variable[6]
Astrometry
Radial velocity (Rv)−1.82±0.14[7] km/s
Proper motion (μ) RA: −16.662(18)[2] mas/yr
Dec.: −53.564(13)[2] mas/yr
Parallax (π)6.3939 ± 0.0153 mas[2]
Distance510 ± 1 ly
(156.4 ± 0.4 pc)
Details[3]
Mass0.856±0.028 M☉
Radius0.845+0.044
−0.035 R☉
Surface gravity (log g)4.49±0.05 cgs
Temperature5275±60 K
Metallicity [Fe/H]−0.02±0.04 dex
Rotational velocity (v sin i)0.7 km/s
Age7.9±4.5 Gyr
Other designations
Gaia DR2 4130539180358512768, EPIC 205071984, 2MASS J16494226-1932340[8]
Database references
SIMBADdata

K2-32 is a G9-type main sequence star slightly smaller and less massive than the sun.[4] Four confirmed transiting exoplanets are known to orbit this star.[9] A study of atmospheric escape from the planet K2-32b caused by high-energy stellar irradiation indicates that the star has always been a very slow rotator.[10]

  1. ^ Cite error: The named reference Roman1987 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Gaia EDR3 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Petigura2017 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Dai2016 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Skrutskie2006 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Sinukoff2016 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Vanderburg2016 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Heller2019 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Kubyshkina2019 was invoked but never defined (see the help page).