Imaginary Picture of Kepler-212 c

Display orbital revolution of Kepler-212 c around the hoststar Kepler-212
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Exoplanet Name : Kepler-212 c
Alternate Name : "2MASS J19102900+4308300 c, K00679.01, KIC 7515212 c, KOI-679 c, KOI-679.01, WISE J191029.00+430829.9 c"
Status : Confirmed
Radius (Rjup / Re): 0.2440 (Rjup) 2.7350 (Rearth)
Mass (Mjup / Me): 0.0212 (Mjup) 6.7249 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2070 (AU) 0.2070 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0871
Orbital Period(Observed/Estimated) 31.81 (Days Obs.) 31.94 (Days Est.)
Surface Gravity (G Earth) 0.8990
Star Radiation at Atmospheric Boundary: 74028.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 736.2 (K)
Blackbody T 0.3(K) 691.4 (K)
Blackbody T 0.7(K) 559.4 (K)
Tidally Locked Blackbody T 0.1(K) 875.5 (K)
Tidally Locked Blackbody T 0.3(K) 822.2 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-212
Alternate Name : "2MASS J19102900+4308300, KIC 7515212, KOI-679, WISE J191029.00+430829.9"
Star Distance(LY) : 2240.4
Stellar Radius(Rsun) : 1.5 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5880 (K)
Spectral type : G2
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.0
Absolute Magnitude: 2.7
Apparent Magnitude: 11.9
Right Ascension(RA) 287.6208
Declination (DEC) 43.1417
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-212+b&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-212%20c/
Kepler-212 c
Kepler-212 c

  • Kepler-212 c is an exoplanet orbiting the star Kepler-212, located about 2240.4 light-years (686.9 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-212 has apparent magnitude of 11.9, with absolute magnitude of 2.7.
  • It is 1.2 times more massive and 1.5 times bigger compared with our Sun. The surface temperature is 5880 with its spectral types of G2
  • In this planetary system, the extrasolar planet Kepler-212 c orbits around the star Kepler-212 every 31.8 days with its orbital distance of 0.21 AU ( 30966759.2 km)
  • (Projected orbit of Kepler-212 c around its host star Kepler-212)


  • The Star Kepler-212 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.102 AU ( 164825893.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.523 AU ( 227832458.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.321 AU ( 347166247.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.415 AU ( 510870341.1 km)
  • Radiation at Planetary Boundary of Kepler-212 c : 74028.47 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-212)



  • Kopparapu Recent Venus for Star Kepler-212 distance : 1.135 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-212 distance : 1.437 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-212 distance : 1.388 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-212 distance : 1.522 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-212 distance : 2.531 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-212 distance : 2.670 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-212)



  • Original Kopparapu Recent Venus for Star Kepler-212 distance : 1.139 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-212 distance : 1.476 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-212 distance : 1.507 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-212 distance : 2.576 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-212 distance : 2.679 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-212)



    (Position in Stellar Map of star Kepler-212 and its Exoplanet Kepler-212 c)



    (Zoomed position in Stellar Map of star Kepler-212 and its Exoplanet Kepler-212 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-212*)
    *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