Imaginary Picture of 1RXS J235133.3+312720 b
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Exoplanet Name : 1RXS J235133.3+312720 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 32.0000 (Mjup) 10174.0160 (Mearth)
Semi Major Axis / Orbital Distance Calculated 120.0000 (AU) 120.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 715740.90 (Days Est.)
Star Radiation at Atmospheric Boundary: 0.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 10.2 (K)
Blackbody T 0.3(K) 9.5 (K)
Blackbody T 0.7(K) 7.7 (K)
Tidally Locked Blackbody T 0.1(K) 12.1 (K)
Tidally Locked Blackbody T 0.3(K) 11.3 (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 : 1RXS J235133.3+312720
Alternate Name : 2MASS J23513366+3127229
Star Distance(LY) : 140.5
Stellar Radius(Rsun) : 0.4 (Rsun Estimated)
Stellar Mass(Msun) : 0.5 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 100.0 (GY)
Temperature : 3600 (K)
Spectral type : M2V
Metalicity : 0.0
Absolute Magnitude: 10.4
Apparent Magnitude: 13.6
Right Ascension(RA) 357.8903
Declination (DEC) 31.4564
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=1RXS+J235133.3%2B312720+&submit=SIMBAD+search
Open Exoplanet Database Link
1RXS J235133.3+312720 b
1RXS J235133.3+312720 b

  • 1RXS J235133.3+312720 b is an exoplanet orbiting the star 1RXS J235133.3+312720, located about 140.5 light-years (43.1 pc) away from Solar System. Its discovery was publicly announced on 2012.
  • The host star 1RXS J235133.3+312720 has apparent magnitude of 13.6, with absolute magnitude of 10.4.
  • It is 0.5 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3600 with its spectral types of M2V
  • (Projected orbit of 1RXS J235133.3+312720 b around its host star 1RXS J235133.3+312720)


  • The Star 1RXS J235133.3+312720 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.122 AU ( 18193276.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.168 AU ( 25147862.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.256 AU ( 38319777.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.377 AU ( 56389231.0 km)
  • Radiation at Planetary Boundary of 1RXS J235133.3+312720 b : 0.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 1RXS J235133.3+312720)



  • Kopparapu Recent Venus for Star 1RXS J235133.3+312720 distance : 0.137 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star 1RXS J235133.3+312720 distance : 0.174 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 1RXS J235133.3+312720 distance : 0.168 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star 1RXS J235133.3+312720 distance : 0.184 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star 1RXS J235133.3+312720 distance : 0.336 AU
  • Kopparapu Outer Boundary for Early Mars for Star 1RXS J235133.3+312720 distance : 0.355 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star 1RXS J235133.3+312720)



  • Original Kopparapu Recent Venus for Star 1RXS J235133.3+312720 distance : 0.136 AU
  • Original Kopparapu Runaway Greenhouse for Star 1RXS J235133.3+312720 distance : 0.180 AU
  • Original Kopparapu Moist Greenhouse for Star 1RXS J235133.3+312720 distance : 0.180 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 1RXS J235133.3+312720 distance : 0.342 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star 1RXS J235133.3+312720 distance : 0.355 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star 1RXS J235133.3+312720)



    (Position in Stellar Map of star 1RXS J235133.3+312720 and its Exoplanet 1RXS J235133.3+312720 b)



    (Zoomed position in Stellar Map of star 1RXS J235133.3+312720 and its Exoplanet 1RXS J235133.3+312720 b (zoom level 3))