Imaginary Picture of BD-08 2823 c

Display orbital revolution of BD-08 2823 c around the hoststar BD-08 2823
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Exoplanet Name : BD-08 2823 c
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.3300 (Mjup) 104.9195 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.6800 (AU) 0.6800 (AU Est.)
Eccentricity : 0.1900
Orbital Period(Yrs) 0.6505
Orbital Period(Observed/Estimated) 237.60 (Days Obs.) 238.09 (Days Est.)
Surface Gravity (G Earth) 1.0132
Star Radiation at Atmospheric Boundary: 548.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 216.0 (K)
Blackbody T 0.3(K) 202.8 (K)
Blackbody T 0.7(K) 164.1 (K)
Tidally Locked Blackbody T 0.1(K) 256.8 (K)
Tidally Locked Blackbody T 0.3(K) 241.2 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : BD-08 2823
Alternate Name :
Star Distance(LY) : 134.3
Stellar Radius(Rsun) : 0.6 (Rsun Estimated)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 4.5 (GY)
Temperature : 4746 (K)
Spectral type : K3V
UV portion[%]: 2.3
Visible portion[%]: 34.8
IR portion[%]: 62.9
Metalicity : -0.1
Absolute Magnitude: 6.8
Apparent Magnitude: 9.9
Right Ascension(RA) 150.2000
Declination (DEC) -9.5167
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "H_brard,.; Udry,.; Lourto,.; Robichon,.; Naef,.; Ehrenreich,.; Benz,.; Bouchy,.; Lecavelierestangs,.; Lovis,.; Mayor,.; Moutou,.; Pepe,.; Queloz,.; Santos,..; S_gransan,."
Discovery Paper - Title The HARPS search for southern extra-solar planets. XX. Planets around the active star BD -08¥¹¡£_823
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/BD-082823%20c/
BD-08 2823 c
BD-08 2823 c

  • BD-08 2823 c is an exoplanet orbiting the star BD-08 2823, located about 134.3 light-years (41.2 pc) away from Solar System. Its discovery was publicly announced on 2009.
  • The host star BD-08 2823 has apparent magnitude of 9.9, with absolute magnitude of 6.8.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 4746 with its spectral types of K3V
  • In this planetary system, the extrasolar planet BD-08 2823 c orbits around the star BD-08 2823 every 237.6 days with its orbital distance of 0.68 AU ( 101726552.1 km)
  • (Projected orbit of BD-08 2823 c around its host star BD-08 2823)


  • The Star BD-08 2823 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.311 AU ( 46591890.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.431 AU ( 64402168.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.656 AU ( 98134653.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.965 AU ( 144409440.9 km)
  • Radiation at Planetary Boundary of BD-08 2823 c : 548.14 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star BD-08 2823)



  • Kopparapu Recent Venus for Star BD-08 2823 distance : 0.341 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star BD-08 2823 distance : 0.431 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star BD-08 2823 distance : 0.417 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star BD-08 2823 distance : 0.457 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star BD-08 2823 distance : 0.790 AU
  • Kopparapu Outer Boundary for Early Mars for Star BD-08 2823 distance : 0.834 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star BD-08 2823)



  • Original Kopparapu Recent Venus for Star BD-08 2823 distance : 0.337 AU
  • Original Kopparapu Runaway Greenhouse for Star BD-08 2823 distance : 0.445 AU
  • Original Kopparapu Moist Greenhouse for Star BD-08 2823 distance : 0.445 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star BD-08 2823 distance : 0.803 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star BD-08 2823 distance : 0.835 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star BD-08 2823)



    (Position in Stellar Map of star BD-08 2823 and its Exoplanet BD-08 2823 c)



    (Zoomed position in Stellar Map of star BD-08 2823 and its Exoplanet BD-08 2823 c (zoom level 3))

    (Synthetic Spectrum of star BD-08 2823*)
    *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