Imaginary Picture of GJ 433 b
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Exoplanet Name : GJ 433 b
Alternate Name :
Radius (Rjup / Re): 0.1384 (Rjup) 1.5513 (Rearth)
Mass (Mjup / Me): 0.0167 (Mjup) 5.3000 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0600 (AU) 0.0600 (AU Est.)
Eccentricity : 0.0500
Orbital Period(Yrs) 0.0202
Orbital Period(Observed/Estimated) 7.37 (Days Obs.) 7.75 (Days Est.)
Star Radiation at Atmospheric Boundary: 11763.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 464.8 (K)
Blackbody T 0.3(K) 436.5 (K)
Blackbody T 0.7(K) 353.2 (K)
Tidally Locked Blackbody T 0.1(K) 552.8 (K)
Tidally Locked Blackbody T 0.3(K) 519.1 (K)
Size Class: super-Earth-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 : GJ 433
Alternate Name :
Star Distance(LY) : 29.5
Stellar Radius(Rsun) : 0.5 (Rsun Estimated)
Stellar Mass(Msun) : 0.5 (Msun Measured) 0.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3600 (K)
Spectral type : M1.5
Metalicity : -0.2
Absolute Magnitude: 10.0
Apparent Magnitude: 9.8
Right Ascension(RA) 173.8623
Declination (DEC) -32.5400
Hubble Space Telescope Guide Star Catalog (GSC) ID 0
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GJ+433+&submit=SIMBAD+search
Open Exoplanet Database Link 0
GJ 433 b
GJ 433 b

  • GJ 433 b is an exoplanet orbiting the star GJ 433, located about 29.5 light-years ( 9.0 pc) away from Solar System. Its discovery was publicly announced on 2009.
  • The host star GJ 433 has apparent magnitude of 9.8, with absolute magnitude of 10.0.
  • It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3600 with its spectral types of M1.5
  • In this planetary system, the extrasolar planet GJ 433 b orbits around the star GJ 433 every 7.4 days with its orbital distance of 0.06 AU ( 8975872.2 km)
  • (Projected orbit of GJ 433 b around its host star GJ 433)


  • The Star GJ 433 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.127 AU ( 19044401.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.176 AU ( 26324340.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.268 AU ( 40112468.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.395 AU ( 59027254.7 km)
  • Radiation at Planetary Boundary of GJ 433 b : 11763.07 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 433)



  • Kopparapu Recent Venus for Star GJ 433 distance : 0.144 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 433 distance : 0.182 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 433 distance : 0.176 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 433 distance : 0.193 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 433 distance : 0.352 AU
  • Kopparapu Outer Boundary for Early Mars for Star GJ 433 distance : 0.371 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 433)



  • Original Kopparapu Recent Venus for Star GJ 433 distance : 0.142 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 433 distance : 0.188 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 433 distance : 0.188 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 433 distance : 0.358 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 433 distance : 0.372 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 433)



    (Position in Stellar Map of star GJ 433 and its Exoplanet GJ 433 b)



    (Zoomed position in Stellar Map of star GJ 433 and its Exoplanet GJ 433 b (zoom level 3))