Imaginary Picture of Kepler-27 d

Display orbital revolution of Kepler-27 d around the hoststar Kepler-27
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Exoplanet Name : Kepler-27 d
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.4500 (Rjup) 5.0441 (Rearth)
Mass (Mjup / Me): 0.0250 (Mjup) 7.9485 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.3124
Star Radiation at Atmospheric Boundary: 0.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 0.0 (K)
Blackbody T 0.3(K) 0.0 (K)
Blackbody T 0.7(K) 0.0 (K)
Tidally Locked Blackbody T 0.1(K) 0.0 (K)
Tidally Locked Blackbody T 0.3(K) 0.0 (K)
Size Class: Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-27
Alternate Name : "2MASS J19285682+4105091, KIC 5792202, KOI-841, WISE J192856.85+410509.3"
Star Distance(LY) : 3506.5
Stellar Radius(Rsun) : 0.6 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5400 (K)
Spectral type : G7
UV portion[%]: 6.4
Visible portion[%]: 42.4
IR portion[%]: 51.2
Metalicity : 0.4
Absolute Magnitude: 4.3
Apparent Magnitude: 14.5
Right Ascension(RA) 292.2368
Declination (DEC) 41.0859
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.cds.unistra.fr/simbad/sim-basic?Ident=Kepler-27&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-27 d
Kepler-27 d

  • Kepler-27 d is an exoplanet orbiting the star Kepler-27, located about 3506.5 light-years (1075.1 pc) away from Solar System. Its discovery was publicly announced on 2023.
  • The host star Kepler-27 has apparent magnitude of 14.5, with absolute magnitude of 4.3.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 5400 with its spectral types of G7
  • (Projected orbit of Kepler-27 d around its host star Kepler-27)


  • The Star Kepler-27 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.373 AU ( 55756774.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.515 AU ( 77070433.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.785 AU ( 117438285.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.155 AU ( 172815581.3 km)
  • Radiation at Planetary Boundary of Kepler-27 d : 0.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-27)



  • Kopparapu Recent Venus for Star Kepler-27 distance : 0.395 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-27 distance : 0.500 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-27 distance : 0.483 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-27 distance : 0.530 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-27 distance : 0.893 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-27 distance : 0.942 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-27)



  • Original Kopparapu Recent Venus for Star Kepler-27 distance : 0.393 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-27 distance : 0.515 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-27 distance : 0.520 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-27 distance : 0.908 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-27 distance : 0.945 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-27)



    (Position in Stellar Map of star Kepler-27 and its Exoplanet Kepler-27 d)



    (Zoomed position in Stellar Map of star Kepler-27 and its Exoplanet Kepler-27 d (zoom level 3))

    (Synthetic Spectrum of star Kepler-27*)
    *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