Imaginary Picture of HD 117618 c

Display orbital revolution of HD 117618 c around the hoststar HD 117618
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Exoplanet Name : HD 117618 c
Alternate Name :
Status : Retracted
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.2000 (Mjup) 63.5876 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.9300 (AU) 0.9300 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.8706
Orbital Period(Observed/Estimated) 318.00 (Days Obs.) 319.68 (Days Est.)
Surface Gravity (G Earth) 0.6141
Star Radiation at Atmospheric Boundary: 2369.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 311.4 (K)
Blackbody T 0.3(K) 292.4 (K)
Blackbody T 0.7(K) 236.6 (K)
Tidally Locked Blackbody T 0.1(K) 370.3 (K)
Tidally Locked Blackbody T 0.3(K) 347.8 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 117618
Alternate Name :
Star Distance(LY) : 123.8
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 3.9 (GY)
Temperature : 5861 (K)
Spectral type : G2V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 4.3
Apparent Magnitude: 7.2
Right Ascension(RA) 203.1065
Declination (DEC) -47.2711
Hubble Space Telescope Guide Star Catalog (GSC) ID 08265-02722
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+117618+&submit=SIMBAD+search
Open Exoplanet Database Link 0
HD 117618 c
HD 117618 c

  • HD 117618 c is an exoplanet orbiting the star HD 117618, located about 123.8 light-years (38.0 pc) away from Solar System. Its discovery was publicly announced on 2013.
  • The host star HD 117618 has apparent magnitude of 7.2, with absolute magnitude of 4.3.
  • It is 1.1 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5861 with its spectral types of G2V
  • In this planetary system, the extrasolar planet HD 117618 c orbits around the star HD 117618 every 318.0 days with its orbital distance of 0.93 AU ( 139126019.8 km)
  • (Projected orbit of HD 117618 c around its host star HD 117618)


  • The Star HD 117618 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.886 AU ( 132479450.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.224 AU ( 183121221.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.865 AU ( 279036216.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.745 AU ( 410614015.9 km)
  • Radiation at Planetary Boundary of HD 117618 c : 2369.30 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 117618)



  • Kopparapu Recent Venus for Star HD 117618 distance : 0.913 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 117618 distance : 1.157 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 117618 distance : 1.117 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 117618 distance : 1.225 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 117618 distance : 2.038 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 117618 distance : 2.149 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 117618)



  • Original Kopparapu Recent Venus for Star HD 117618 distance : 0.916 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 117618 distance : 1.188 AU
  • Original Kopparapu Moist Greenhouse for Star HD 117618 distance : 1.212 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 117618 distance : 2.074 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 117618 distance : 2.157 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 117618)



    (Position in Stellar Map of star HD 117618 and its Exoplanet HD 117618 c)



    (Zoomed position in Stellar Map of star HD 117618 and its Exoplanet HD 117618 c (zoom level 3))

    (Synthetic Spectrum of star HD 117618*)
    *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