Imaginary Picture of Kepler-129 d

Display orbital revolution of Kepler-129 d around the hoststar Kepler-129
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Exoplanet Name : Kepler-129 d
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 6.3380 (Mjup) 2015.0910 (Mearth)
Semi Major Axis / Orbital Distance Calculated 3.2611 (AU) 3.2611 (AU Est.)
Eccentricity : 0.0615
Orbital Period(Yrs) 5.2992
Orbital Period(Observed/Estimated) 1935.57 (Days Obs.) 1980.14 (Days Est.)
Surface Gravity (G Earth) 19.4604
Star Radiation at Atmospheric Boundary: 343.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 192.2 (K)
Blackbody T 0.3(K) 180.5 (K)
Blackbody T 0.7(K) 146.0 (K)
Tidally Locked Blackbody T 0.1(K) 228.5 (K)
Tidally Locked Blackbody T 0.3(K) 214.6 (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-129
Alternate Name : "2MASS J19011470+4750549, KIC 10586004, KOI-275, WISE J190114.69+475054.6"
Star Distance(LY) : 1349.2
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5770 (K)
Spectral type : G3
UV portion[%]: 7.8
Visible portion[%]: 44.7
IR portion[%]: 47.5
Metalicity : 0.0
Absolute Magnitude: 2.5
Apparent Magnitude: 10.6
Right Ascension(RA) 285.3113
Declination (DEC) 47.8486
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
Kepler-129 d
Kepler-129 d

  • Kepler-129 d is an exoplanet orbiting the star Kepler-129, located about 1349.2 light-years (413.7 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star Kepler-129 has apparent magnitude of 10.6, with absolute magnitude of 2.5.
  • It is 1.2 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 5770 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-129 d orbits around the star Kepler-129 every 1935.6 days with its orbital distance of 3.26 AU ( 487853616.1 km)
  • (Projected orbit of Kepler-129 d around its host star Kepler-129)


  • The Star Kepler-129 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.183 AU ( 176951230.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.635 AU ( 244592843.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.491 AU ( 372705364.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.666 AU ( 548452271.7 km)
  • Radiation at Planetary Boundary of Kepler-129 d : 343.77 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-129)



  • Kopparapu Recent Venus for Star Kepler-129 distance : 1.227 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-129 distance : 1.553 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-129 distance : 1.500 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-129 distance : 1.645 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-129 distance : 2.743 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-129 distance : 2.894 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-129)



  • Original Kopparapu Recent Venus for Star Kepler-129 distance : 1.228 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-129 distance : 1.596 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-129 distance : 1.625 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-129 distance : 2.792 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-129 distance : 2.903 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-129)



    (Position in Stellar Map of star Kepler-129 and its Exoplanet Kepler-129 d)



    (Zoomed position in Stellar Map of star Kepler-129 and its Exoplanet Kepler-129 d (zoom level 3))

    (Synthetic Spectrum of star Kepler-129*)
    *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