Imaginary Picture of Kepler-708 b

Display orbital revolution of Kepler-708 b around the hoststar Kepler-708
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Exoplanet Name : Kepler-708 b
Alternate Name : "2MASS J19351595+4212449 b, K00863.01, KIC 6784235 b, KOI-863 b, KOI-863.01, WISE J193515.94+421245.0 b"
Radius (Rjup / Re): 0.2610 (Rjup) 2.9255 (Rearth)
Mass (Mjup / Me): 0.0225 (Mjup) 7.1596 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0418 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0087
Orbital Period(Observed/Estimated) 3.17 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.8365
Star Radiation at Atmospheric Boundary: 973476.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1401.9 (K)
Blackbody T 0.3(K) 1316.6 (K)
Blackbody T 0.7(K) 1065.2 (K)
Tidally Locked Blackbody T 0.1(K) 1667.2 (K)
Tidally Locked Blackbody T 0.3(K) 1565.7 (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-708
Alternate Name : "2MASS J19351595+4212449, KIC 6784235, KOI-863, WISE J193515.94+421245.0"
Star Distance(LY) : 4555.7
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 4.4 (GY)
Temperature : 5896 (K)
Spectral type : G4
UV portion[%]: 7.6
Visible portion[%]: 44.4
IR portion[%]: 48.0
Metalicity : 0.0
Absolute Magnitude: 3.6
Apparent Magnitude: 14.3
Right Ascension(RA) 293.8165
Declination (DEC) 42.2125
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 602 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-708%20b/
Kepler-708 b
Kepler-708 b

  • Kepler-708 b is an exoplanet orbiting the star Kepler-708, located about 4555.7 light-years (1396.8 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-708 has apparent magnitude of 14.3, with absolute magnitude of 3.6.
  • It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5896 with its spectral types of G4
  • In this planetary system, the extrasolar planet Kepler-708 b orbits around the star Kepler-708 every 3.2 days with its orbital distance of 0.04 AU ( 6251286.6 km)
  • (Projected orbit of Kepler-708 b around its host star Kepler-708)


  • The Star Kepler-708 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.807 AU ( 120659781.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.115 AU ( 166783349.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.699 AU ( 254140915.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.500 AU ( 373979490.7 km)
  • Radiation at Planetary Boundary of Kepler-708 b : 973476.90 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-708)



  • Kopparapu Recent Venus for Star Kepler-708 distance : 0.830 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-708 distance : 1.051 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-708 distance : 1.015 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-708 distance : 1.113 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-708 distance : 1.851 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-708 distance : 1.952 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-708)



  • Original Kopparapu Recent Venus for Star Kepler-708 distance : 0.833 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-708 distance : 1.080 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-708 distance : 1.102 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-708 distance : 1.883 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-708 distance : 1.958 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-708)



    (Position in Stellar Map of star Kepler-708 and its Exoplanet Kepler-708 b)



    (Zoomed position in Stellar Map of star Kepler-708 and its Exoplanet Kepler-708 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-708*)
    *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