Imaginary Picture of CHXR 73 b
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Exoplanet Name : CHXR 73 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 12.0000 (Mjup) 3815.2560 (Mearth)
Semi Major Axis / Orbital Distance Calculated 200.0000 (AU) 200.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 1746229.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 0.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 7.0 (K)
Blackbody T 0.3(K) 6.5 (K)
Blackbody T 0.7(K) 5.3 (K)
Tidally Locked Blackbody T 0.1(K) 8.3 (K)
Tidally Locked Blackbody T 0.3(K) 7.8 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Imaging
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : CHXR 73
Alternate Name :
Star Distance(LY) : 549.9
Stellar Radius(Rsun) : 0.4 (Rsun Estimated)
Stellar Mass(Msun) : 0.3 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3500 (K)
Spectral type : M3.25
Metalicity : 0.0
Absolute Magnitude: 5.2
Apparent Magnitude: 11.3
Right Ascension(RA) 166.6199
Declination (DEC) -77.6258
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Luhman,..; Wilson,..; Brandner,.; Skrutskie,..; Nelson,..; Smith,..; Peterson,..; Cushing,..; Young,."
Discovery Paper - Title Discovery of a Young Substellar Companion in Chamaeleon
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=CHXR+73+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/CHXR%2073%20b/
CHXR 73 b
CHXR 73 b

  • CHXR 73 b is an exoplanet orbiting the star CHXR 73, located about 549.9 light-years (168.6 pc) away from Solar System. Its discovery was publicly announced on 2006.
  • The host star CHXR 73 has apparent magnitude of 11.3, with absolute magnitude of 5.2.
  • It is 0.3 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3500 with its spectral types of M3.25
  • (Projected orbit of CHXR 73 b around its host star CHXR 73)


  • The Star CHXR 73 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.095 AU ( 14242745.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.132 AU ( 19687195.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.201 AU ( 29998929.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.295 AU ( 44144739.2 km)
  • Radiation at Planetary Boundary of CHXR 73 b : 0.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star CHXR 73)



  • Kopparapu Recent Venus for Star CHXR 73 distance : 0.108 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star CHXR 73 distance : 0.136 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star CHXR 73 distance : 0.131 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star CHXR 73 distance : 0.145 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star CHXR 73 distance : 0.265 AU
  • Kopparapu Outer Boundary for Early Mars for Star CHXR 73 distance : 0.279 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star CHXR 73)



  • Original Kopparapu Recent Venus for Star CHXR 73 distance : 0.107 AU
  • Original Kopparapu Runaway Greenhouse for Star CHXR 73 distance : 0.141 AU
  • Original Kopparapu Moist Greenhouse for Star CHXR 73 distance : 0.141 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star CHXR 73 distance : 0.269 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star CHXR 73 distance : 0.280 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star CHXR 73)



    (Position in Stellar Map of star CHXR 73 and its Exoplanet CHXR 73 b)



    (Zoomed position in Stellar Map of star CHXR 73 and its Exoplanet CHXR 73 b (zoom level 3))