K2-19

K2-19
Observation data
Epoch J2000      Equinox J2000
Constellation Virgo[1]
Right ascension 11h 39m 50.4803s[2]
Declination +00° 36′ 12.875″[2]
Apparent magnitude (V) 13.002±0.009[3]
Characteristics
Spectral type K0 V[4] or G9V[5]
Apparent magnitude (J) 11.596±0.024[6]
Apparent magnitude (H) 11.208±0.022[6]
Apparent magnitude (K) 11.161±0.026[6]
Apparent magnitude (B) 13.798±0.020[3]
Variable type Planetary transit variable[7]
Astrometry
Radial velocity (Rv)−7.2296±0.0080[8] km/s
Proper motion (μ) RA: −18.673(22)[2] mas/yr
Dec.: 4.571(15)[2] mas/yr
Parallax (π)3.3410 ± 0.0196 mas[2]
Distance976 ± 6 ly
(299 ± 2 pc)
Details[4]
Mass0.918±0.064 M☉
Radius0.881±0.111 R☉
Surface gravity (log g)4.50±0.10 cgs
Temperature5250±70 K
Metallicity [Fe/H]0.10±0.05 dex
Rotation20.54±0.30 d
Rotational velocity (v sin i)3.00±0.50 km/s
Age≥8[9] Gyr
Other designations
UCAC4 454-050261, Gaia DR3 3798833775141351552, EPIC 201505350, 2MASS J11395048+0036129[10]
Database references
SIMBADdata

K2-19 is an early K-type[4] or late G-type main sequence star[5] that is magnetically active, and has a light curve that exhibits variations in brightness of ~1%.[5] It is located approximately 976 light-years away in the constellation Virgo. Three confirmed transiting exoplanets are known to orbit this star.

  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 APASS DR9 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Nespral2017 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Sinukoff2016 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Skrutskie2006 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Armstrong2015 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Barros2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Narita2015 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).