Imaginary Picture of SDSS J080531+481233 B
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Exoplanet Name : SDSS J080531+481233 B
Alternate Name : "2M0805+48, SDSS J080531 B, SDSS 080531 B"
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 66.2800 (Mjup) 21072.9306 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.8200 (AU) 0.8200 (AU Est.)
Eccentricity : 0.4230
Orbital Period(Yrs) 2.0271
Orbital Period(Observed/Estimated) 740.43 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 40.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 112.7 (K)
Blackbody T 0.3(K) 105.8 (K)
Blackbody T 0.7(K) 85.6 (K)
Tidally Locked Blackbody T 0.1(K) 134.0 (K)
Tidally Locked Blackbody T 0.3(K) 125.9 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Astrometry
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name :
Alternate Name :
Star Distance(LY) : 69.7
Stellar Radius(Rsun) : 0.4 (Rsun Estimated)
Stellar Mass(Msun) : 0.0 (Msun Measured) 0.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3300 (K)
Spectral type : M9
Metalicity : 0.0
Absolute Magnitude: 20.4
Apparent Magnitude: 22.0
Right Ascension(RA) 121.3827
Declination (DEC) 48.2091
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
SDSS J080531+481233 B
SDSS J080531+481233 B

  • SDSS J080531+481233 B is an exoplanet orbiting the star , located about 69.7 light-years (21.4 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star has apparent magnitude of 22.0, with absolute magnitude of 20.4.
  • In this planetary system, the extrasolar planet SDSS J080531+481233 B orbits around the star every 740.4 days with its orbital distance of 0.82 AU ( 122670254.0 km)
  • (Projected orbit of SDSS J080531+481233 B around its host star )


  • The Star 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.102 AU ( 15301294.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.141 AU ( 21150388.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.215 AU ( 32228511.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.317 AU ( 47425666.0 km)
  • Radiation at Planetary Boundary of SDSS J080531+481233 B : 40.66 W/m2

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



  • Kopparapu Recent Venus for Star distance : 0.116 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star distance : 0.147 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star distance : 0.142 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star distance : 0.156 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star distance : 0.288 AU
  • Kopparapu Outer Boundary for Early Mars for Star distance : 0.304 AU

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



  • Original Kopparapu Recent Venus for Star distance : 0.115 AU
  • Original Kopparapu Runaway Greenhouse for Star distance : 0.152 AU
  • Original Kopparapu Moist Greenhouse for Star distance : 0.152 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star distance : 0.293 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star distance : 0.304 AU

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



    (Position in Stellar Map of star and its Exoplanet SDSS J080531+481233 B)



    (Zoomed position in Stellar Map of star and its Exoplanet SDSS J080531+481233 B (zoom level 3))