Imaginary Picture of DE CVn b

Display orbital revolution of DE CVn b around the hoststar DE CVn
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Exoplanet Name : DE CVn b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 11.0000 (Mjup) 3497.3180 (Mearth)
Semi Major Axis / Orbital Distance Calculated 5.7500 (AU) 5.7500 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 11.2197
Orbital Period(Observed/Estimated) 4098.10 (Days Obs.) 4524.35 (Days Est.)
Surface Gravity (G Earth) 33.7748
Star Radiation at Atmospheric Boundary: 41.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 113.2 (K)
Blackbody T 0.3(K) 106.3 (K)
Blackbody T 0.7(K) 86.0 (K)
Tidally Locked Blackbody T 0.1(K) 134.6 (K)
Tidally Locked Blackbody T 0.3(K) 126.4 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : TTV
Mass Detection : TTV
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : DE CVn
Alternate Name :
Star Distance(LY) : 99.6
Stellar Radius(Rsun) : 1.1 (Rsun Estimated)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5500 (K)
Spectral type : DA+M3V
UV portion[%]: 6.9
Visible portion[%]: 43.2
IR portion[%]: 49.9
Metalicity : 0.0
Absolute Magnitude: 10.6
Apparent Magnitude: 13.0
Right Ascension(RA) 201.7220
Declination (DEC) 45.5464
Hubble Space Telescope Guide Star Catalog (GSC) ID 03460-00780
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=DE+CVn+&submit=SIMBAD+search
Open Exoplanet Database Link
DE CVn b
DE CVn b

  • DE CVn b is an exoplanet orbiting the star DE CVn, located about 99.6 light-years (30.5 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star DE CVn has apparent magnitude of 13.0, with absolute magnitude of 10.6.
  • It is 1.2 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5500 with its spectral types of DA+M3V
  • In this planetary system, the extrasolar planet DE CVn b orbits around the star DE CVn every 4098.1 days with its orbital distance of 5.75 AU ( 860187756.5 km)
  • (Projected orbit of DE CVn b around its host star DE CVn)


  • The Star DE CVn 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.723 AU ( 108196493.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.000 AU ( 149555829.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.523 AU ( 227889987.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.242 AU ( 335350100.1 km)
  • Radiation at Planetary Boundary of DE CVn b : 41.34 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star DE CVn)



  • Kopparapu Recent Venus for Star DE CVn distance : 0.762 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star DE CVn distance : 0.965 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star DE CVn distance : 0.932 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star DE CVn distance : 1.022 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star DE CVn distance : 1.718 AU
  • Kopparapu Outer Boundary for Early Mars for Star DE CVn distance : 1.812 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star DE CVn)



  • Original Kopparapu Recent Venus for Star DE CVn distance : 0.759 AU
  • Original Kopparapu Runaway Greenhouse for Star DE CVn distance : 0.992 AU
  • Original Kopparapu Moist Greenhouse for Star DE CVn distance : 1.004 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star DE CVn distance : 1.747 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star DE CVn distance : 1.817 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star DE CVn)



    (Position in Stellar Map of star DE CVn and its Exoplanet DE CVn b)



    (Zoomed position in Stellar Map of star DE CVn and its Exoplanet DE CVn b (zoom level 3))

    (Synthetic Spectrum of star DE CVn*)
    *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