Imaginary Picture of Kepler-778 b

Display orbital revolution of Kepler-778 b around the hoststar Kepler-778
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Exoplanet Name : Kepler-778 b
Alternate Name : "2MASS J19095458+4414150 b, K01142.01, KIC 8288947 b, KOI-1142 b, KOI-1142.01"
Status : Confirmed
Radius (Rjup / Re): 0.1500 (Rjup) 1.6813 (Rearth)
Mass (Mjup / Me): 0.0135 (Mjup) 4.2774 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0441 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0103
Orbital Period(Observed/Estimated) 3.76 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.5131
Star Radiation at Atmospheric Boundary: 312756.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1055.5 (K)
Blackbody T 0.3(K) 991.2 (K)
Blackbody T 0.7(K) 802.0 (K)
Tidally Locked Blackbody T 0.1(K) 1255.2 (K)
Tidally Locked Blackbody T 0.3(K) 1178.7 (K)
Size Class: super-Earth-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-778
Alternate Name : "2MASS J19095458+4414150, KIC 8288947, KOI-1142"
Star Distance(LY) : 3062.7
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 5.2 (GY)
Temperature : 5315 (K)
Spectral type : K1
UV portion[%]: 3.9
Visible portion[%]: 38.5
IR portion[%]: 57.6
Metalicity : -0.1
Absolute Magnitude: 4.5
Apparent Magnitude: 14.4
Right Ascension(RA) 287.4774
Declination (DEC) 44.2375
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 664 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-778%20b/
Kepler-778 b
Kepler-778 b

  • Kepler-778 b is an exoplanet orbiting the star Kepler-778, located about 3062.7 light-years (939.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-778 has apparent magnitude of 14.4, with absolute magnitude of 4.5.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5315 with its spectral types of K1
  • In this planetary system, the extrasolar planet Kepler-778 b orbits around the star Kepler-778 every 3.8 days with its orbital distance of 0.04 AU ( 6594131.6 km)
  • (Projected orbit of Kepler-778 b around its host star Kepler-778)


  • The Star Kepler-778 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.482 AU ( 72142446.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.667 AU ( 99719714.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.016 AU ( 151950777.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.495 AU ( 223602224.9 km)
  • Radiation at Planetary Boundary of Kepler-778 b : 312756.20 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-778)



  • Kopparapu Recent Venus for Star Kepler-778 distance : 0.513 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-778 distance : 0.650 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-778 distance : 0.628 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-778 distance : 0.689 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-778 distance : 1.164 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-778 distance : 1.228 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-778)



  • Original Kopparapu Recent Venus for Star Kepler-778 distance : 0.510 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-778 distance : 0.669 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-778 distance : 0.675 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-778 distance : 1.184 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-778 distance : 1.232 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-778)



    (Position in Stellar Map of star Kepler-778 and its Exoplanet Kepler-778 b)



    (Zoomed position in Stellar Map of star Kepler-778 and its Exoplanet Kepler-778 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-778*)
    *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