Imaginary Picture of Kepler-660 b

Display orbital revolution of Kepler-660 b around the hoststar Kepler-660
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Exoplanet Name : Kepler-660 b
Alternate Name : "2MASS J19123318+4743280 b, K00746.01, KIC 10526549 b, KOI-746 b, KOI-746.01, WISE J191233.18+474328.3 b"
Status : Confirmed
Radius (Rjup / Re): 0.2290 (Rjup) 2.5669 (Rearth)
Mass (Mjup / Me): 0.0199 (Mjup) 6.3395 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0785 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0254
Orbital Period(Observed/Estimated) 9.27 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.9622
Star Radiation at Atmospheric Boundary: 56376.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 687.7 (K)
Blackbody T 0.3(K) 645.8 (K)
Blackbody T 0.7(K) 522.6 (K)
Tidally Locked Blackbody T 0.1(K) 817.9 (K)
Tidally Locked Blackbody T 0.3(K) 768.0 (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-660
Alternate Name : "2MASS J19123318+4743280, KIC 10526549, KOI-746, WISE J191233.18+474328.3"
Star Distance(LY) : 1853.8
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 4.6 (GY)
Temperature : 4848 (K)
Spectral type : K3
UV portion[%]: 2.4
Visible portion[%]: 35.3
IR portion[%]: 62.3
Metalicity : -0.1
Absolute Magnitude: 4.9
Apparent Magnitude: 13.7
Right Ascension(RA) 288.1383
Declination (DEC) 47.7245
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 566 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-660%20b/
Kepler-660 b
Kepler-660 b

  • Kepler-660 b is an exoplanet orbiting the star Kepler-660, located about 1853.8 light-years (568.4 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-660 has apparent magnitude of 13.7, with absolute magnitude of 4.9.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4848 with its spectral types of K3
  • In this planetary system, the extrasolar planet Kepler-660 b orbits around the star Kepler-660 every 9.3 days with its orbital distance of 0.08 AU ( 11741331.8 km)
  • (Projected orbit of Kepler-660 b around its host star Kepler-660)


  • The Star Kepler-660 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.365 AU ( 54537642.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.504 AU ( 75385273.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.768 AU ( 114870474.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.130 AU ( 169036935.2 km)
  • Radiation at Planetary Boundary of Kepler-660 b : 56376.41 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-660)



  • Kopparapu Recent Venus for Star Kepler-660 distance : 0.397 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-660 distance : 0.503 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-660 distance : 0.486 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-660 distance : 0.533 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-660 distance : 0.917 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-660 distance : 0.967 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-660)



  • Original Kopparapu Recent Venus for Star Kepler-660 distance : 0.392 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-660 distance : 0.518 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-660 distance : 0.519 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-660 distance : 0.932 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-660 distance : 0.970 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-660)



    (Position in Stellar Map of star Kepler-660 and its Exoplanet Kepler-660 b)



    (Zoomed position in Stellar Map of star Kepler-660 and its Exoplanet Kepler-660 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-660*)
    *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