Imaginary Picture of Kepler-812 b

Display orbital revolution of Kepler-812 b around the hoststar Kepler-812
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Exoplanet Name : Kepler-812 b
Alternate Name : "2MASS J19152526+4812307 b, K01309.01, KIC 10854768 b, KOI-1309 b, KOI-1309.01, WISE J191525.26+481230.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.3170 (Rjup) 3.5533 (Rearth)
Mass (Mjup / Me): 0.0270 (Mjup) 8.5782 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1036 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0277
Orbital Period(Observed/Estimated) 10.12 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.6794
Star Radiation at Atmospheric Boundary: 562878.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1222.5 (K)
Blackbody T 0.3(K) 1148.0 (K)
Blackbody T 0.7(K) 928.9 (K)
Tidally Locked Blackbody T 0.1(K) 1453.8 (K)
Tidally Locked Blackbody T 0.3(K) 1365.3 (K)
Size Class: 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-812
Alternate Name : "2MASS J19152526+4812307, KIC 10854768, KOI-1309, WISE J191525.26+481230.6"
Star Distance(LY) : 4835.7
Stellar Radius(Rsun) : 1.8 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.5 (Msun Estimated)
Star Age : 1.7 (GY)
Temperature : 6312 (K)
Spectral type : F4
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.0
Absolute Magnitude: 2.2
Apparent Magnitude: 13.0
Right Ascension(RA) 288.8553
Declination (DEC) 48.2085
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton, Stephen T. Bryson, Jeffrey L. Coughlin, Jason F. Rowe, Ganesh Ravichandran, Erik A. Petigura, Michael R. Haas, and Natalie M. Batalha"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 684 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-812&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-812%20b/
Kepler-812 b
Kepler-812 b

  • Kepler-812 b is an exoplanet orbiting the star Kepler-812, located about 4835.7 light-years (1482.6 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-812 has apparent magnitude of 13.0, with absolute magnitude of 2.2.
  • It is 1.4 times more massive and 1.8 times bigger compared with our Sun. The surface temperature is 6312 with its spectral types of F4
  • In this planetary system, the extrasolar planet Kepler-812 b orbits around the star Kepler-812 every 10.1 days with its orbital distance of 0.10 AU ( 15501027.8 km)
  • (Projected orbit of Kepler-812 b around its host star Kepler-812)


  • The Star Kepler-812 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.521 AU ( 227508693.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.102 AU ( 314476469.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.203 AU ( 479192546.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.714 AU ( 705152824.5 km)
  • Radiation at Planetary Boundary of Kepler-812 b : 562878.18 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-812)



  • Kopparapu Recent Venus for Star Kepler-812 distance : 1.526 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-812 distance : 1.933 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-812 distance : 1.866 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-812 distance : 2.045 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-812 distance : 3.372 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-812 distance : 3.557 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-812)



  • Original Kopparapu Recent Venus for Star Kepler-812 distance : 1.546 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-812 distance : 1.982 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-812 distance : 2.045 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-812 distance : 3.433 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-812 distance : 3.570 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-812)



    (Position in Stellar Map of star Kepler-812 and its Exoplanet Kepler-812 b)



    (Zoomed position in Stellar Map of star Kepler-812 and its Exoplanet Kepler-812 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-812*)
    *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