Imaginary Picture of Kepler-978 b

Display orbital revolution of Kepler-978 b around the hoststar Kepler-978
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Exoplanet Name : Kepler-978 b
Alternate Name : "2MASS J19065057+4302364 b, K01848.01, KIC 7430034 b, KOI-1848 b, KOI-1848.01, WISE J190650.55+430236.2 b"
Status : Confirmed
Radius (Rjup / Re): 0.2670 (Rjup) 2.9928 (Rearth)
Mass (Mjup / Me): 0.0230 (Mjup) 7.3125 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.2703 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1359
Orbital Period(Observed/Estimated) 49.62 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.8164
Star Radiation at Atmospheric Boundary: 29252.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 583.7 (K)
Blackbody T 0.3(K) 548.1 (K)
Blackbody T 0.7(K) 443.5 (K)
Tidally Locked Blackbody T 0.1(K) 694.1 (K)
Tidally Locked Blackbody T 0.3(K) 651.9 (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-978
Alternate Name : "2MASS J19065057+4302364, KIC 7430034, KOI-1848, WISE J190650.55+430236.2"
Star Distance(LY) : 1873.8
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 3.6 (GY)
Temperature : 5938 (K)
Spectral type : G0
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.0
Absolute Magnitude: 3.6
Apparent Magnitude: 12.4
Right Ascension(RA) 286.7107
Declination (DEC) 43.0435
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 784 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-978&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-978%20b/
Kepler-978 b
Kepler-978 b

  • Kepler-978 b is an exoplanet orbiting the star Kepler-978, located about 1873.8 light-years (574.5 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-978 has apparent magnitude of 12.4, with absolute magnitude of 3.6.
  • It is 1.1 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5938 with its spectral types of G0
  • In this planetary system, the extrasolar planet Kepler-978 b orbits around the star Kepler-978 every 49.6 days with its orbital distance of 0.27 AU ( 40436812.3 km)
  • (Projected orbit of Kepler-978 b around its host star Kepler-978)


  • The Star Kepler-978 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.904 AU ( 135297633.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.250 AU ( 187016687.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.905 AU ( 284972044.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.803 AU ( 419348847.9 km)
  • Radiation at Planetary Boundary of Kepler-978 b : 29252.70 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-978)



  • Kopparapu Recent Venus for Star Kepler-978 distance : 0.928 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-978 distance : 1.176 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-978 distance : 1.135 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-978 distance : 1.245 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-978 distance : 2.068 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-978 distance : 2.181 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-978)



  • Original Kopparapu Recent Venus for Star Kepler-978 distance : 0.933 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-978 distance : 1.207 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-978 distance : 1.234 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-978 distance : 2.104 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-978 distance : 2.188 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-978)



    (Position in Stellar Map of star Kepler-978 and its Exoplanet Kepler-978 b)



    (Zoomed position in Stellar Map of star Kepler-978 and its Exoplanet Kepler-978 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-978*)
    *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