Imaginary Picture of HD 13808 c

Display orbital revolution of HD 13808 c around the hoststar HD 13808
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Exoplanet Name : HD 13808 c
Alternate Name :
Radius (Rjup / Re): 0.2028 (Rjup) 2.2728 (Rearth)
Mass (Mjup / Me): 0.0360 (Mjup) 11.4458 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2476 (AU) 0.2476 (AU Est.)
Eccentricity : 0.4300
Orbital Period(Yrs) 0.1474
Orbital Period(Observed/Estimated) 53.83 (Days Obs.) 65.64 (Days Est.)
Star Radiation at Atmospheric Boundary: 6465.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 400.2 (K)
Blackbody T 0.3(K) 375.8 (K)
Blackbody T 0.7(K) 304.1 (K)
Tidally Locked Blackbody T 0.1(K) 475.9 (K)
Tidally Locked Blackbody T 0.3(K) 447.0 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 13808
Alternate Name :
Star Distance(LY) : 92.4
Stellar Radius(Rsun) : 0.7 (Rsun Estimated)
Stellar Mass(Msun) : 0.5 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4960 (K)
Spectral type : K2V
Metalicity : 0.0
Absolute Magnitude: 6.1
Apparent Magnitude: 8.4
Right Ascension(RA) 33.1792
Declination (DEC) -53.7439
Hubble Space Telescope Guide Star Catalog (GSC) ID 08483-00536http://www.openexoplanetcatalogue.com/planet/HD%2http://www.openexoplanetcatalogue.com/planet/HD%2013808%20c/
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+13808+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2013808%20c/
HD 13808 c
HD 13808 c

  • HD 13808 c is an exoplanet orbiting the star HD 13808, located about 92.4 light-years (28.3 pc) away from Solar System. Its discovery was publicly announced on 2011.
  • The host star HD 13808 has apparent magnitude of 8.4, with absolute magnitude of 6.1.
  • It is 0.5 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4960 with its spectral types of K2V
  • In this planetary system, the extrasolar planet HD 13808 c orbits around the star HD 13808 every 53.8 days with its orbital distance of 0.25 AU ( 37040432.8 km)
  • (Projected orbit of HD 13808 c around its host star HD 13808)


  • The Star HD 13808 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.389 AU ( 58265595.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.538 AU ( 80538279.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.820 AU ( 122722514.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.207 AU ( 180591555.7 km)
  • Radiation at Planetary Boundary of HD 13808 c : 6465.64 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 13808)



  • Kopparapu Recent Venus for Star HD 13808 distance : 0.422 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 13808 distance : 0.534 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 13808 distance : 0.516 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 13808 distance : 0.567 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 13808 distance : 0.970 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 13808 distance : 1.023 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 13808)



  • Original Kopparapu Recent Venus for Star HD 13808 distance : 0.418 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 13808 distance : 0.551 AU
  • Original Kopparapu Moist Greenhouse for Star HD 13808 distance : 0.552 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 13808 distance : 0.986 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 13808 distance : 1.026 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 13808)



    (Position in Stellar Map of star HD 13808 and its Exoplanet HD 13808 c)



    (Zoomed position in Stellar Map of star HD 13808 and its Exoplanet HD 13808 c (zoom level 3))