Imaginary Picture of 2M 0746+20 b

Display orbital revolution of 2M 0746+20 b around the hoststar 2M 0746+20
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Exoplanet Name : 2M 0746+20 b
Alternate Name :
Radius (Rjup / Re): 0.9700 (Rjup) 10.8727 (Rearth)
Mass (Mjup / Me): 12.2100 (Mjup) 3882.0230 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.8970 (AU) 2.8970 (AU Est.)
Eccentricity : 0.4870
Orbital Period(Yrs) 12.7033
Orbital Period(Observed/Estimated) 4640.00 (Days Obs.) 6367.49 (Days Est.)
Star Radiation at Atmospheric Boundary: 0.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 18.2 (K)
Blackbody T 0.3(K) 17.0 (K)
Blackbody T 0.7(K) 13.8 (K)
Tidally Locked Blackbody T 0.1(K) 21.6 (K)
Tidally Locked Blackbody T 0.3(K) 20.3 (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 : 2M 0746+20
Alternate Name :
Star Distance(LY) : 39.8
Stellar Radius(Rsun) : 0.1 (Rsun Measured)
Stellar Mass(Msun) : 0.1 (Msun Measured) 0.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 2205 (K)
Spectral type : L0
Metalicity : 0.0
Absolute Magnitude: 21.6
Apparent Magnitude: 22.0
Right Ascension(RA) 116.6792
Declination (DEC) 20.0089
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
2M 0746+20 b
2M 0746+20 b

  • 2M 0746+20 b is an exoplanet orbiting the star 2M 0746+20, located about 39.8 light-years (12.2 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star 2M 0746+20 has apparent magnitude of 22.0, with absolute magnitude of 21.6.
  • It is 0.1 times more massive and 0.1 times bigger compared with our Sun. The surface temperature is 2205 with its spectral types of L0
  • In this planetary system, the extrasolar planet 2M 0746+20 b orbits around the star 2M 0746+20 every 4640.0 days with its orbital distance of 2.90 AU ( 433385031.4 km)
  • (Projected orbit of 2M 0746+20 b around its host star 2M 0746+20)


  • The Star 2M 0746+20 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.009 AU ( 1402378.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.013 AU ( 1938453.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.020 AU ( 2953774.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.029 AU ( 4346608.8 km)
  • Radiation at Planetary Boundary of 2M 0746+20 b : 0.03 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 2M 0746+20)



  • Kopparapu Recent Venus for Star 2M 0746+20 distance : 0.011 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star 2M 0746+20 distance : 0.014 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 2M 0746+20 distance : 0.013 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star 2M 0746+20 distance : 0.015 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star 2M 0746+20 distance : 0.028 AU
  • Kopparapu Outer Boundary for Early Mars for Star 2M 0746+20 distance : 0.030 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star 2M 0746+20)



  • Original Kopparapu Recent Venus for Star 2M 0746+20 distance : 0.011 AU
  • Original Kopparapu Runaway Greenhouse for Star 2M 0746+20 distance : 0.014 AU
  • Original Kopparapu Moist Greenhouse for Star 2M 0746+20 distance : 0.014 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 2M 0746+20 distance : 0.029 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star 2M 0746+20 distance : 0.030 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star 2M 0746+20)



    (Position in Stellar Map of star 2M 0746+20 and its Exoplanet 2M 0746+20 b)



    (Zoomed position in Stellar Map of star 2M 0746+20 and its Exoplanet 2M 0746+20 b (zoom level 3))