Imaginary Picture of Kepler-88 d

Display orbital revolution of Kepler-88 d around the hoststar KOI-142
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Exoplanet Name : Kepler-88 d
Alternate Name : "2MASS J19243554+4040098 d, KIC 5446285 d, KOI-142 d, TIC 122712595 d, WISE J192435.54+404009.8 d"
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 3.0500 (Mjup) 969.7109 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.4640 (AU) 2.4640 (AU Est.)
Eccentricity : 0.4100
Orbital Period(Yrs) 3.8411
Orbital Period(Observed/Estimated) 1403.00 (Days Obs.) 1419.82 (Days Est.)
Surface Gravity (G Earth) 9.3648
Star Radiation at Atmospheric Boundary: 146.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 155.2 (K)
Blackbody T 0.3(K) 145.7 (K)
Blackbody T 0.7(K) 117.9 (K)
Tidally Locked Blackbody T 0.1(K) 184.5 (K)
Tidally Locked Blackbody T 0.3(K) 173.3 (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 : KOI-142
Alternate Name : "KOI-142, 2MASS J19243554+4040098, KIC 5446285, Kepler-88, TIC 122712595, WISE J192435.54+404009.8"
Star Distance(LY) : 1242.7
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 2.5 (GY)
Temperature : 5466 (K)
Spectral type : G6 V
UV portion[%]: 6.7
Visible portion[%]: 43.0
IR portion[%]: 50.3
Metalicity : 0.3
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 KOI-142, located about 1242.7 light-years (381.0 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star KOI-142 has apparent magnitude of 13.5, with absolute magnitude of 5.6.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5466 with its spectral types of G6 V
  • In this planetary system, the extrasolar planet Kepler-88 d orbits around the star KOI-142 every 1403.0 days with its orbital distance of 2.46 AU ( 368609153.4 km)
  • (Projected orbit of Kepler-88 d around its host star KOI-142)


  • The Star KOI-142 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.583 AU ( 87144478.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.805 AU ( 120456443.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.227 AU ( 183548962.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.806 AU ( 270100339.1 km)
  • Radiation at Planetary Boundary of Kepler-88 d : 146.05 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star KOI-142)



  • Kopparapu Recent Venus for Star KOI-142 distance : 0.615 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star KOI-142 distance : 0.779 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star KOI-142 distance : 0.752 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star KOI-142 distance : 0.825 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star KOI-142 distance : 1.388 AU
  • Kopparapu Outer Boundary for Early Mars for Star KOI-142 distance : 1.464 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star KOI-142)



  • Original Kopparapu Recent Venus for Star KOI-142 distance : 0.612 AU
  • Original Kopparapu Runaway Greenhouse for Star KOI-142 distance : 0.801 AU
  • Original Kopparapu Moist Greenhouse for Star KOI-142 distance : 0.810 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star KOI-142 distance : 1.412 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star KOI-142 distance : 1.468 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star KOI-142)



    (Position in Stellar Map of star KOI-142 and its Exoplanet Kepler-88 d)



    (Zoomed position in Stellar Map of star KOI-142 and its Exoplanet Kepler-88 d (zoom level 3))

    (Synthetic Spectrum of star KOI-142*)
    *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