Imaginary Picture of Kepler-987 b

Display orbital revolution of Kepler-987 b around the hoststar Kepler-987
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Exoplanet Name : Kepler-987 b
Alternate Name : "2MASS J19173865+4607510 b, K01866.01, KIC 9520838 b, KOI-1866 b, KOI-1866.01, WISE J191738.65+460751.0 b"
Status : Confirmed
Radius (Rjup / Re): 0.2910 (Rjup) 3.2618 (Rearth)
Mass (Mjup / Me): 0.0249 (Mjup) 7.9219 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.4320 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.2883
Orbital Period(Observed/Estimated) 105.30 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.7446
Star Radiation at Atmospheric Boundary: 5070.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 376.6 (K)
Blackbody T 0.3(K) 353.7 (K)
Blackbody T 0.7(K) 286.2 (K)
Tidally Locked Blackbody T 0.1(K) 447.9 (K)
Tidally Locked Blackbody T 0.3(K) 420.6 (K)
Size Class: 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-987
Alternate Name : "2MASS J19173865+4607510, KIC 9520838, KOI-1866, WISE J191738.65+460751.0"
Star Distance(LY) : 2980.8
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 2.5 (GY)
Temperature : 5531 (K)
Spectral type : G5
UV portion[%]: 7.0
Visible portion[%]: 43.4
IR portion[%]: 49.5
Metalicity : 0.0
Absolute Magnitude: 4.0
Apparent Magnitude: 13.8
Right Ascension(RA) 289.4111
Declination (DEC) 46.1308
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 793 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-987&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-987%20b/
Kepler-987 b
Kepler-987 b

  • Kepler-987 b is an exoplanet orbiting the star Kepler-987, located about 2980.8 light-years (913.9 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-987 has apparent magnitude of 13.8, with absolute magnitude of 4.0.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5531 with its spectral types of G5
  • In this planetary system, the extrasolar planet Kepler-987 b orbits around the star Kepler-987 every 105.3 days with its orbital distance of 0.43 AU ( 64627477.0 km)
  • (Projected orbit of Kepler-987 b around its host star Kepler-987)


  • The Star Kepler-987 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.602 AU ( 90022543.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.832 AU ( 124434680.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.267 AU ( 189610915.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.865 AU ( 279020768.6 km)
  • Radiation at Planetary Boundary of Kepler-987 b : 5070.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-987)



  • Kopparapu Recent Venus for Star Kepler-987 distance : 0.633 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-987 distance : 0.801 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-987 distance : 0.774 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-987 distance : 0.849 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-987 distance : 1.425 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-987 distance : 1.503 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-987)



  • Original Kopparapu Recent Venus for Star Kepler-987 distance : 0.631 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-987 distance : 0.824 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-987 distance : 0.835 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-987 distance : 1.450 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-987 distance : 1.508 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-987)



    (Position in Stellar Map of star Kepler-987 and its Exoplanet Kepler-987 b)



    (Zoomed position in Stellar Map of star Kepler-987 and its Exoplanet Kepler-987 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-987*)
    *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