Imaginary Picture of CoRoT-4 b

Display orbital revolution of CoRoT-4 b around the hoststar CoRoT-4
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Exoplanet Name : CoRoT-4 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.1900 (Rjup) 13.3387 (Rearth)
Mass (Mjup / Me): 0.7200 (Mjup) 228.9154 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0900 (AU) 0.0900 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0252
Orbital Period(Observed/Estimated) 9.20 (Days Obs.) 9.40 (Days Est.)
Surface Gravity (G Earth) 1.2866
Star Radiation at Atmospheric Boundary: 293953.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1039.2 (K)
Blackbody T 0.3(K) 975.9 (K)
Blackbody T 0.7(K) 789.6 (K)
Tidally Locked Blackbody T 0.1(K) 1235.9 (K)
Tidally Locked Blackbody T 0.3(K) 1160.6 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : CoRoT-4
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 1.0 (GY)
Temperature : 6190 (K)
Spectral type : F8V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.1
Absolute Magnitude: 25.0
Apparent Magnitude: 13.7
Right Ascension(RA) 102.1946
Declination (DEC) -0.6728
Hubble Space Telescope Guide Star Catalog (GSC) ID 04800-02187
Discovered by
Discovery Paper - Authors "S. Aigrain,. Collier Cameron et al."
Discovery Paper - Title Transiting exoplanets from the CoRoT space mission IV: CoRoT-Exo-4b: A transiting planet in a 9.2 day synchronous orbit
Discovery Paper - Journal "A&A 488, L43-L46 (2008) DOI: 10.1051/0004-6361:200810246"
Discovery Paper - URL https://www.aanda.org/articles/aa/pdf/forth/aa10246-08.pdf
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=CoRoT-4+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/CoRoT-4%20b/
CoRoT-4 b
CoRoT-4 b

  • CoRoT-4 b is an exoplanet orbiting the star CoRoT-4. Its discovery was publicly announced on 2008.
  • The host star CoRoT-4 has apparent magnitude of 13.7, with absolute magnitude of 25.0.
  • It is 1.1 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 6190 with its spectral types of F8V
  • In this planetary system, the extrasolar planet CoRoT-4 b orbits around the star CoRoT-4 every 9.2 days with its orbital distance of 0.09 AU ( 13463808.4 km)
  • (Projected orbit of CoRoT-4 b around its host star CoRoT-4)


  • The Star CoRoT-4 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.955 AU ( 142802973.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.319 AU ( 197391028.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.011 AU ( 300780244.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.959 AU ( 442611306.4 km)
  • Radiation at Planetary Boundary of CoRoT-4 b : 293953.12 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star CoRoT-4)



  • Kopparapu Recent Venus for Star CoRoT-4 distance : 0.965 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star CoRoT-4 distance : 1.222 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star CoRoT-4 distance : 1.180 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star CoRoT-4 distance : 1.293 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star CoRoT-4 distance : 2.137 AU
  • Kopparapu Outer Boundary for Early Mars for Star CoRoT-4 distance : 2.254 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star CoRoT-4)



  • Original Kopparapu Recent Venus for Star CoRoT-4 distance : 0.975 AU
  • Original Kopparapu Runaway Greenhouse for Star CoRoT-4 distance : 1.254 AU
  • Original Kopparapu Moist Greenhouse for Star CoRoT-4 distance : 1.290 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star CoRoT-4 distance : 2.176 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star CoRoT-4 distance : 2.263 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star CoRoT-4)



    (Position in Stellar Map of star CoRoT-4 and its Exoplanet CoRoT-4 b)



    (Zoomed position in Stellar Map of star CoRoT-4 and its Exoplanet CoRoT-4 b (zoom level 3))

    (Synthetic Spectrum of star CoRoT-4*)
    *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