Imaginary Picture of Kepler-1970 b

Display orbital revolution of Kepler-1970 b around the hoststar KIC 8121913
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Exoplanet Name : Kepler-1970 b
Alternate Name : KIC 8121913 b
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.1000 (Mjup) 667.6698 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0491 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0090
Orbital Period(Observed/Estimated) 3.29 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 6.4479
Star Radiation at Atmospheric Boundary: 3231043.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1892.2 (K)
Blackbody T 0.3(K) 1777.0 (K)
Blackbody T 0.7(K) 1437.8 (K)
Tidally Locked Blackbody T 0.1(K) 2250.3 (K)
Tidally Locked Blackbody T 0.3(K) 2113.2 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Default
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : KIC 8121913
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 2.2 (Rsun Measured)
Stellar Mass(Msun) : 1.5 (Msun Measured) 1.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5975 (K)
Spectral type : G1
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.3
Absolute Magnitude: 25.0
Apparent Magnitude: 22.0
Right Ascension(RA) 298.9678
Declination (DEC) 43.9094
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=KIC+8121913&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1970 b
Kepler-1970 b

  • Kepler-1970 b is an exoplanet orbiting the star KIC 8121913. Its discovery was publicly announced on 2021.
  • The host star KIC 8121913 has apparent magnitude of 22.0, with absolute magnitude of 25.0.
  • It is 1.5 times more massive and 2.2 times bigger compared with our Sun. The surface temperature is 5975 with its spectral types of G1
  • In this planetary system, the extrasolar planet Kepler-1970 b orbits around the star KIC 8121913 every 3.3 days with its orbital distance of 0.05 AU ( 7347184.4 km)
  • (Projected orbit of Kepler-1970 b around its host star KIC 8121913)


  • The Star KIC 8121913 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.727 AU ( 258358440.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.387 AU ( 357118882.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.638 AU ( 544170146.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.353 AU ( 800770208.8 km)
  • Radiation at Planetary Boundary of Kepler-1970 b : 3231043.79 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star KIC 8121913)



  • Kopparapu Recent Venus for Star KIC 8121913 distance : 1.769 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star KIC 8121913 distance : 2.240 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star KIC 8121913 distance : 2.163 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star KIC 8121913 distance : 2.371 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star KIC 8121913 distance : 3.936 AU
  • Kopparapu Outer Boundary for Early Mars for Star KIC 8121913 distance : 4.151 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star KIC 8121913)



  • Original Kopparapu Recent Venus for Star KIC 8121913 distance : 1.778 AU
  • Original Kopparapu Runaway Greenhouse for Star KIC 8121913 distance : 2.300 AU
  • Original Kopparapu Moist Greenhouse for Star KIC 8121913 distance : 2.353 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star KIC 8121913 distance : 4.006 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star KIC 8121913 distance : 4.166 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star KIC 8121913)



    (Position in Stellar Map of star KIC 8121913 and its Exoplanet Kepler-1970 b)



    (Zoomed position in Stellar Map of star KIC 8121913 and its Exoplanet Kepler-1970 b (zoom level 3))

    (Synthetic Spectrum of star KIC 8121913*)
    *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