Imaginary Picture of HD 43197 c

Display orbital revolution of HD 43197 c around the hoststar HD 43197
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Exoplanet Name : HD 43197 c
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 7.8680 (Mjup) 2501.5362 (Mearth)
Semi Major Axis / Orbital Distance Calculated 8.5400 (AU) 8.5400 (AU Est.)
Eccentricity : 0.1490
Orbital Period(Yrs) 25.4504
Orbital Period(Observed/Estimated) 9296.00 (Days Obs.) 9303.39 (Days Est.)
Surface Gravity (G Earth) 24.1582
Star Radiation at Atmospheric Boundary: 15.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 88.5 (K)
Blackbody T 0.3(K) 83.1 (K)
Blackbody T 0.7(K) 67.3 (K)
Tidally Locked Blackbody T 0.1(K) 105.3 (K)
Tidally Locked Blackbody T 0.3(K) 98.9 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : "Radial Velocity, Astrometry"
Mass Detection : Astrometry
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 43197
Alternate Name :
Star Distance(LY) : 179.1
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5508 (K)
Spectral type : G8V
UV portion[%]: 6.9
Visible portion[%]: 43.3
IR portion[%]: 49.8
Metalicity : 0.4
Absolute Magnitude: 5.3
Apparent Magnitude: 8.9
Right Ascension(RA) 93.4000
Declination (DEC) -29.8972
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 43197 c
HD 43197 c

  • HD 43197 c is an exoplanet orbiting the star HD 43197, located about 179.1 light-years (54.9 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star HD 43197 has apparent magnitude of 8.9, with absolute magnitude of 5.3.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5508 with its spectral types of G8V
  • In this planetary system, the extrasolar planet HD 43197 c orbits around the star HD 43197 every 9296.0 days with its orbital distance of 8.54 AU ( 1277565815.8 km)
  • (Projected orbit of HD 43197 c around its host star HD 43197)


  • The Star HD 43197 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.657 AU ( 98320929.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.908 AU ( 135905218.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.384 AU ( 207089477.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.037 AU ( 304741238.7 km)
  • Radiation at Planetary Boundary of HD 43197 c : 15.48 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 43197)



  • Kopparapu Recent Venus for Star HD 43197 distance : 0.692 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 43197 distance : 0.876 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 43197 distance : 0.846 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 43197 distance : 0.928 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 43197 distance : 1.560 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 43197 distance : 1.645 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 43197)



  • Original Kopparapu Recent Venus for Star HD 43197 distance : 0.690 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 43197 distance : 0.901 AU
  • Original Kopparapu Moist Greenhouse for Star HD 43197 distance : 0.912 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 43197 distance : 1.587 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 43197 distance : 1.650 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 43197)



    (Position in Stellar Map of star HD 43197 and its Exoplanet HD 43197 c)



    (Zoomed position in Stellar Map of star HD 43197 and its Exoplanet HD 43197 c (zoom level 3))

    (Synthetic Spectrum of star HD 43197*)
    *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