Imaginary Picture of Kepler-87 c
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Exoplanet Name : Kepler-87 c
Alternate Name :
Radius (Rjup / Re): 0.5490 (Rjup) 6.1537 (Rearth)
Mass (Mjup / Me): 0.0201 (Mjup) 6.3906 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.6640 (AU) 0.6640 (AU Est.)
Eccentricity : 0.0390
Orbital Period(Yrs) 0.5266
Orbital Period(Observed/Estimated) 192.36 (Days Obs.) 188.43 (Days Est.)
Star Radiation at Atmospheric Boundary: 9060.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 435.4 (K)
Blackbody T 0.3(K) 408.9 (K)
Blackbody T 0.7(K) 330.9 (K)
Tidally Locked Blackbody T 0.1(K) 517.8 (K)
Tidally Locked Blackbody T 0.3(K) 486.3 (K)
Size Class: sub-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 : KOI-1574
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 1.8 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 7.5 (GY)
Temperature : 5600 (K)
Spectral type : G6
Metalicity : -0.2
Absolute Magnitude: 25.0
Apparent Magnitude: 15.0
Right Ascension(RA) 297.9167
Declination (DEC) 46.9650
Hubble Space Telescope Guide Star Catalog (GSC) ID 0
Discovered by
Discovery Paper - Authors "Aviv Ofir, Stefan Dreizler, Mathias Zechmeister, Tim-Oliver Husser"
Discovery Paper - Title An Independent Planet Search In The Kepler Dataset. II. An extremely low-density super-Earth mass planet around Kepler-87
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK 0
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-87%20c/
Kepler-87 c
Kepler-87 c

  • Kepler-87 c is an exoplanet orbiting the star KOI-1574. Its discovery was publicly announced on 2012.
  • The host star KOI-1574 has apparent magnitude of 15.0, with absolute magnitude of 25.0.
  • It is 1.1 times more massive and 1.8 times bigger compared with our Sun. The surface temperature is 5600 with its spectral types of G6
  • In this planetary system, the extrasolar planet Kepler-87 c orbits around the star KOI-1574 every 192.4 days with its orbital distance of 0.66 AU ( 99332986.1 km)
  • (Projected orbit of Kepler-87 c around its host star KOI-1574)


  • The Star KOI-1574 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.236 AU ( 184971813.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.709 AU ( 255679385.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.604 AU ( 389598801.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.832 AU ( 573311703.3 km)
  • Radiation at Planetary Boundary of Kepler-87 c : 9060.74 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star KOI-1574)



  • Kopparapu Recent Venus for Star KOI-1574 distance : 1.295 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star KOI-1574 distance : 1.640 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star KOI-1574 distance : 1.584 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star KOI-1574 distance : 1.737 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star KOI-1574 distance : 2.911 AU
  • Kopparapu Outer Boundary for Early Mars for Star KOI-1574 distance : 3.070 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star KOI-1574)



  • Original Kopparapu Recent Venus for Star KOI-1574 distance : 1.292 AU
  • Original Kopparapu Runaway Greenhouse for Star KOI-1574 distance : 1.686 AU
  • Original Kopparapu Moist Greenhouse for Star KOI-1574 distance : 1.710 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star KOI-1574 distance : 2.961 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star KOI-1574 distance : 3.080 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star KOI-1574)



    (Position in Stellar Map of star KOI-1574 and its Exoplanet Kepler-87 c)



    (Zoomed position in Stellar Map of star KOI-1574 and its Exoplanet Kepler-87 c (zoom level 3))