Imaginary Picture of Kepler-77 b
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Exoplanet Name : Kepler-77 b
Alternate Name :
Radius (Rjup / Re): 0.9600 (Rjup) 10.7606 (Rearth)
Mass (Mjup / Me): 0.4300 (Mjup) 136.7133 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0450 (AU) 0.0450 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0098
Orbital Period(Observed/Estimated) 3.58 (Days Obs.) 3.58 (Days Est.)
Star Radiation at Atmospheric Boundary: 591233.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1237.6 (K)
Blackbody T 0.3(K) 1162.2 (K)
Blackbody T 0.7(K) 940.4 (K)
Tidally Locked Blackbody T 0.1(K) 1471.8 (K)
Tidally Locked Blackbody T 0.3(K) 1382.1 (K)
Size Class: Jupiter-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-77
Alternate Name :
Star Distance(LY) : 2084.6
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 7.5 (GY)
Temperature : 5596 (K)
Spectral type : G5V
Metalicity : 0.2
Absolute Magnitude: 6.0
Apparent Magnitude: 15.0
Right Ascension(RA) 289.6080
Declination (DEC) 44.3454
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "A. Santerne, C. Moutou, M. Tsantaki, F. Bouchy, G. H_brard, V. Adibekyan, J.-M. Almenara, L. Amard, S. C. C. Barros, I. Boisse, A. S. Bonomo, G. Bruno, B. Courcol, M. Deleuil, O. Demangeon, R. F. D_az, T. Guillot, M. Havel, G. Montagnier, A. S. Rajpurohit, J. Rey, N. C. Santos"
Discovery Paper - Title SOPHIE velocimetry of Kepler transit candidates XVII. The physical properties of giant exoplanets within 400 days of period
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-77+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-77%20b/
Kepler-77 b
Kepler-77 b

  • Kepler-77 b is an exoplanet orbiting the star Kepler-77, located about 2084.6 light-years (639.1 pc) away from Solar System. Its discovery was publicly announced on 2013.
  • The host star Kepler-77 has apparent magnitude of 15.0, with absolute magnitude of 6.0.
  • It is 0.9 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5596 with its spectral types of G5V
  • In this planetary system, the extrasolar planet Kepler-77 b orbits around the star Kepler-77 every 3.6 days with its orbital distance of 0.05 AU ( 6733400.2 km)
  • (Projected orbit of Kepler-77 b around its host star Kepler-77)


  • The Star Kepler-77 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.677 AU ( 101284751.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.936 AU ( 140001995.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.426 AU ( 213332057.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.098 AU ( 313927468.7 km)
  • Radiation at Planetary Boundary of Kepler-77 b : 591233.03 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-77)



  • Kopparapu Recent Venus for Star Kepler-77 distance : 0.709 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-77 distance : 0.898 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-77 distance : 0.868 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-77 distance : 0.951 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-77 distance : 1.594 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-77 distance : 1.682 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-77)



  • Original Kopparapu Recent Venus for Star Kepler-77 distance : 0.708 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-77 distance : 0.924 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-77 distance : 0.937 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-77 distance : 1.622 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-77 distance : 1.687 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-77)



    (Position in Stellar Map of star Kepler-77 and its Exoplanet Kepler-77 b)



    (Zoomed position in Stellar Map of star Kepler-77 and its Exoplanet Kepler-77 b (zoom level 3))