Imaginary Picture of HD 75784 c

Display orbital revolution of HD 75784 c around the hoststar HD 75784
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Exoplanet Name : HD 75784 c
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 5.6000 (Mjup) 1780.4528 (Mearth)
Semi Major Axis / Orbital Distance Calculated 6.5000 (AU) 6.5000 (AU Est.)
Eccentricity : 0.3600
Orbital Period(Yrs) 13.7984
Orbital Period(Observed/Estimated) 5040.00 (Days Obs.) 5097.42 (Days Est.)
Surface Gravity (G Earth) 17.1944
Star Radiation at Atmospheric Boundary: 184.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 164.5 (K)
Blackbody T 0.3(K) 154.5 (K)
Blackbody T 0.7(K) 125.0 (K)
Tidally Locked Blackbody T 0.1(K) 195.7 (K)
Tidally Locked Blackbody T 0.3(K) 183.8 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 75784
Alternate Name :
Star Distance(LY) : 224.1
Stellar Radius(Rsun) : 3.3 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.4 (Msun Estimated)
Star Age : 4.0 (GY)
Temperature : 4917 (K)
Spectral type : K3 IV
UV portion[%]: 2.8
Visible portion[%]: 36.3
IR portion[%]: 60.9
Metalicity : 0.2
Absolute Magnitude: 3.7
Apparent Magnitude: 7.8
Right Ascension(RA) 133.0998
Declination (DEC) 13.2334
Hubble Space Telescope Guide Star Catalog (GSC) ID 00817-01748
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+75784+&submit=SIMBAD+search
Open Exoplanet Database Link
HD 75784 c
HD 75784 c

  • HD 75784 c is an exoplanet orbiting the star HD 75784, located about 224.1 light-years (68.7 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star HD 75784 has apparent magnitude of 7.8, with absolute magnitude of 3.7.
  • It is 1.4 times more massive and 3.3 times bigger compared with our Sun. The surface temperature is 4917 with its spectral types of K3 IV
  • In this planetary system, the extrasolar planet HD 75784 c orbits around the star HD 75784 every 5040.0 days with its orbital distance of 6.50 AU ( 972386159.5 km)
  • (Projected orbit of HD 75784 c around its host star HD 75784)


  • The Star HD 75784 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.728 AU ( 258566626.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.389 AU ( 357406649.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.640 AU ( 544608639.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.357 AU ( 801415470.5 km)
  • Radiation at Planetary Boundary of HD 75784 c : 184.76 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 75784)



  • Kopparapu Recent Venus for Star HD 75784 distance : 1.877 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 75784 distance : 2.376 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 75784 distance : 2.295 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 75784 distance : 2.519 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 75784 distance : 4.322 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 75784 distance : 4.559 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 75784)



  • Original Kopparapu Recent Venus for Star HD 75784 distance : 1.856 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 75784 distance : 2.450 AU
  • Original Kopparapu Moist Greenhouse for Star HD 75784 distance : 2.456 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 75784 distance : 4.394 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 75784 distance : 4.570 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 75784)



    (Position in Stellar Map of star HD 75784 and its Exoplanet HD 75784 c)



    (Zoomed position in Stellar Map of star HD 75784 and its Exoplanet HD 75784 c (zoom level 3))

    (Synthetic Spectrum of star HD 75784*)
    *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