Imaginary Picture of HD 140901 c

Display orbital revolution of HD 140901 c around the hoststar HD 140901
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Exoplanet Name : HD 140901 c
Alternate Name : HIP 77358 c
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 6.2840 (Mjup) 1997.9224 (Mearth)
Semi Major Axis / Orbital Distance Calculated 7.4210 (AU) 7.4210 (AU Est.)
Eccentricity : 0.6000
Orbital Period(Yrs) 20.3075
Orbital Period(Observed/Estimated) 7417.50 (Days Obs.) 7421.07 (Days Est.)
Surface Gravity (G Earth) 19.2946
Star Radiation at Atmospheric Boundary: 20.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 94.6 (K)
Blackbody T 0.3(K) 88.9 (K)
Blackbody T 0.7(K) 71.9 (K)
Tidally Locked Blackbody T 0.1(K) 112.5 (K)
Tidally Locked Blackbody T 0.3(K) 105.7 (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 : HD 140901
Alternate Name : HIP 77358
Star Distance(LY) : 49.7
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5587 (K)
Spectral type : G6
UV portion[%]: 7.2
Visible portion[%]: 43.8
IR portion[%]: 49.0
Metalicity : 0.1
Absolute Magnitude: 5.1
Apparent Magnitude: 6.0
Right Ascension(RA) 236.8708
Declination (DEC) -37.9172
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
HD 140901 c
HD 140901 c

  • HD 140901 c is an exoplanet orbiting the star HD 140901, located about 49.7 light-years (15.3 pc) away from Solar System.
  • The host star HD 140901 has apparent magnitude of 6.0, with absolute magnitude of 5.1.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5587 with its spectral types of G6
  • In this planetary system, the extrasolar planet HD 140901 c orbits around the star HD 140901 every 7417.5 days with its orbital distance of 7.42 AU ( 1110165798.5 km)
  • (Projected orbit of HD 140901 c around its host star HD 140901)


  • The Star HD 140901 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.653 AU ( 97620891.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.902 AU ( 134937583.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.374 AU ( 205615015.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.023 AU ( 302571502.2 km)
  • Radiation at Planetary Boundary of HD 140901 c : 20.20 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 140901)



  • Kopparapu Recent Venus for Star HD 140901 distance : 0.684 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 140901 distance : 0.866 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 140901 distance : 0.837 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 140901 distance : 0.917 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 140901 distance : 1.538 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 140901 distance : 1.622 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 140901)



  • Original Kopparapu Recent Venus for Star HD 140901 distance : 0.682 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 140901 distance : 0.891 AU
  • Original Kopparapu Moist Greenhouse for Star HD 140901 distance : 0.903 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 140901 distance : 1.565 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 140901 distance : 1.627 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 140901)



    (Position in Stellar Map of star HD 140901 and its Exoplanet HD 140901 c)



    (Zoomed position in Stellar Map of star HD 140901 and its Exoplanet HD 140901 c (zoom level 3))

    (Synthetic Spectrum of star HD 140901*)
    *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