Imaginary Picture of 2M 2236+4751 b

Display orbital revolution of 2M 2236+4751 b around the hoststar 2M 2236+4751
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Exoplanet Name : 2M 2236+4751 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 12.5000 (Mjup) 3974.2250 (Mearth)
Semi Major Axis / Orbital Distance Calculated 230.0000 (AU) 230.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 1644774.46 (Days Est.)
Surface Gravity (G Earth) 38.3804
Star Radiation at Atmospheric Boundary: 0.0 (W/m2)
Measured Temperature (K) 1050.0 (K)
Blackbody T 0.1(K) 9.1 (K)
Blackbody T 0.3(K) 8.5 (K)
Blackbody T 0.7(K) 6.9 (K)
Tidally Locked Blackbody T 0.1(K) 10.8 (K)
Tidally Locked Blackbody T 0.3(K) 10.2 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Imaging
Mass Detection : Spectrum
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : 2M 2236+4751
Alternate Name :
Star Distance(LY) : 205.5
Stellar Radius(Rsun) : 0.5 (Rsun Estimated)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.1 (GY)
Temperature : 4000 (K)
Spectral type : K7
UV portion[%]: 0.7
Visible portion[%]: 23.8
IR portion[%]: 75.5
Metalicity : 0.0
Absolute Magnitude: 8.5
Apparent Magnitude: 12.5
Right Ascension(RA) 339.1042
Declination (DEC) 47.8619
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link
2M 2236+4751 b
2M 2236+4751 b

  • 2M 2236+4751 b is an exoplanet orbiting the star 2M 2236+4751, located about 205.5 light-years (63.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star 2M 2236+4751 has apparent magnitude of 12.5, with absolute magnitude of 8.5.
  • It is 0.6 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 4000 with its spectral types of K7
  • (Projected orbit of 2M 2236+4751 b around its host star 2M 2236+4751)


  • The Star 2M 2236+4751 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.187 AU ( 27989095.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.259 AU ( 38688244.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.394 AU ( 58952323.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.580 AU ( 86750926.0 km)
  • Radiation at Planetary Boundary of 2M 2236+4751 b : 0.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 2M 2236+4751)



  • Kopparapu Recent Venus for Star 2M 2236+4751 distance : 0.210 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star 2M 2236+4751 distance : 0.265 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 2M 2236+4751 distance : 0.256 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star 2M 2236+4751 distance : 0.282 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star 2M 2236+4751 distance : 0.503 AU
  • Kopparapu Outer Boundary for Early Mars for Star 2M 2236+4751 distance : 0.531 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star 2M 2236+4751)



  • Original Kopparapu Recent Venus for Star 2M 2236+4751 distance : 0.207 AU
  • Original Kopparapu Runaway Greenhouse for Star 2M 2236+4751 distance : 0.274 AU
  • Original Kopparapu Moist Greenhouse for Star 2M 2236+4751 distance : 0.274 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 2M 2236+4751 distance : 0.512 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star 2M 2236+4751 distance : 0.532 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star 2M 2236+4751)



    (Position in Stellar Map of star 2M 2236+4751 and its Exoplanet 2M 2236+4751 b)



    (Zoomed position in Stellar Map of star 2M 2236+4751 and its Exoplanet 2M 2236+4751 b (zoom level 3))

    (Synthetic Spectrum of star 2M 2236+4751*)
    *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