Imaginary Picture of Kepler-88 d
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Exoplanet Name : Kepler-88 d
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.8880 (Mjup) 918.2049 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.4640 (AU) 2.4640 (AU Est.)
Eccentricity : 0.4320
Orbital Period(Yrs) 3.9178
Orbital Period(Observed/Estimated) 1431.00 (Days Obs.) 1397.42 (Days Est.)
Star Radiation at Atmospheric Boundary: 172.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 161.7 (K)
Blackbody T 0.3(K) 151.9 (K)
Blackbody T 0.7(K) 122.9 (K)
Tidally Locked Blackbody T 0.1(K) 192.3 (K)
Tidally Locked Blackbody T 0.3(K) 180.6 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-88
Alternate Name : KOI-142
Star Distance(LY) : 1242.7
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 2.5 (GY)
Temperature : 5513 (K)
Spectral type : B
Metalicity : 0.4
Absolute Magnitude: 5.6
Apparent Magnitude: 13.5
Right Ascension(RA) 291.1481
Declination (DEC) 40.6694
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-88+&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-88 d
Kepler-88 d

  • Kepler-88 d is an exoplanet orbiting the star Kepler-88, located about 1242.7 light-years (381.0 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star Kepler-88 has apparent magnitude of 13.5, with absolute magnitude of 5.6.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5513 with its spectral types of B
  • In this planetary system, the extrasolar planet Kepler-88 d orbits around the star Kepler-88 every 1431.0 days with its orbital distance of 2.46 AU ( 368609153.4 km)
  • (Projected orbit of Kepler-88 d around its host star Kepler-88)


  • The Star Kepler-88 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.633 AU ( 94658035.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.875 AU ( 130842141.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.333 AU ( 199374468.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.961 AU ( 293388264.4 km)
  • Radiation at Planetary Boundary of Kepler-88 d : 172.31 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-88)



  • Kopparapu Recent Venus for Star Kepler-88 distance : 0.666 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-88 distance : 0.844 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-88 distance : 0.815 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-88 distance : 0.893 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-88 distance : 1.501 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-88 distance : 1.583 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-88)



  • Original Kopparapu Recent Venus for Star Kepler-88 distance : 0.664 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-88 distance : 0.868 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-88 distance : 0.878 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-88 distance : 1.527 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-88 distance : 1.588 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-88)



    (Position in Stellar Map of star Kepler-88 and its Exoplanet Kepler-88 d)



    (Zoomed position in Stellar Map of star Kepler-88 and its Exoplanet Kepler-88 d (zoom level 3))