Imaginary Picture of K2-19 b

Display orbital revolution of K2-19 b around the hoststar K2-19
/
Exoplanet Name : K2-19 b
Alternate Name : "2MASS J11395048+0036129 b, EPIC 201505350 b, EPIC 201505350.02, WISE J113950.46+003612.9 b"
Radius (Rjup / Re): 0.6910 (Rjup) 7.7454 (Rearth)
Mass (Mjup / Me): 0.1019 (Mjup) 32.3979 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0740 (AU) 0.0740 (AU Est.)
Eccentricity : 0.2000
Orbital Period(Yrs) 0.0217
Orbital Period(Observed/Estimated) 7.92 (Days Obs.) 7.62 (Days Est.)
Surface Gravity (G Earth) 0.5400
Star Radiation at Atmospheric Boundary: 143991.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 869.4 (K)
Blackbody T 0.3(K) 816.5 (K)
Blackbody T 0.7(K) 660.6 (K)
Tidally Locked Blackbody T 0.1(K) 1033.9 (K)
Tidally Locked Blackbody T 0.3(K) 971.0 (K)
Size Class: sub-Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Spectrum
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : K2-19
Alternate Name : "EPIC 201505350, 2MASS J11395048+0036129, WISE J113950.46+003612.9"
Star Distance(LY) : 952.8
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 8.0 (GY)
Temperature : 5430 (K)
Spectral type : G9 V
UV portion[%]: 6.5
Visible portion[%]: 42.7
IR portion[%]: 50.8
Metalicity : 0.1
Absolute Magnitude: 5.5
Apparent Magnitude: 12.8
Right Ascension(RA) 174.9603
Declination (DEC) 0.6036
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "David J. Armstrong, Alexandre Santerne, Dimitri Veras, Susana C. C. Barros, Olivier Demangeon, Jorge Lillo-Box, James McCormac, Hugh P. Osborn, Maria Tsantaki, Jos_-Manuel Almenara, David Barrado, Isabelle Boisse, Aldo S. Bonomo, Fran_ois Bouchy, David J. A. Brown, Giovanni Bruno, Javiera Rey Cerda, Bastien Courcol, Magali Deleuil, Rodrigo F. D_az, Amanda P. Doyle, Guillaume H_brard, James Kirk, Kristine W. F. Lam, Don L. Pollacco, Arvind Rajpurohit, Jessica Spake, Simon R. Walker"
Discovery Paper - Title One of the closest exoplanet pairs to the 3:2 Mean Motion Resonance: K2-19b & c
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=K2-19+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/EPIC%20201505350%20b/
K2-19 b
K2-19 b

  • K2-19 b is an exoplanet orbiting the star K2-19, located about 952.8 light-years (292.1 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star K2-19 has apparent magnitude of 12.8, with absolute magnitude of 5.5.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5430 with its spectral types of G9 V
  • In this planetary system, the extrasolar planet K2-19 b orbits around the star K2-19 every 7.9 days with its orbital distance of 0.07 AU ( 11070242.4 km)
  • (Projected orbit of K2-19 b around its host star K2-19)


  • The Star K2-19 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.549 AU ( 82178124.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.759 AU ( 113591643.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.157 AU ( 173088526.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.703 AU ( 254707349.0 km)
  • Radiation at Planetary Boundary of K2-19 b : 143991.74 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-19)



  • Kopparapu Recent Venus for Star K2-19 distance : 0.581 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-19 distance : 0.736 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-19 distance : 0.711 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-19 distance : 0.779 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-19 distance : 1.313 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-19 distance : 1.385 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-19)



  • Original Kopparapu Recent Venus for Star K2-19 distance : 0.578 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-19 distance : 0.757 AU
  • Original Kopparapu Moist Greenhouse for Star K2-19 distance : 0.765 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-19 distance : 1.335 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-19 distance : 1.389 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-19)



    (Position in Stellar Map of star K2-19 and its Exoplanet K2-19 b)



    (Zoomed position in Stellar Map of star K2-19 and its Exoplanet K2-19 b (zoom level 3))

    (Synthetic Spectrum of star K2-19*)
    *Yamashiki YA et al. 2019 ApJ 881 114
    MUSCLES Paper I - France et al. 2016 ApJ 820 89
    MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
    MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102