Imaginary Picture of OGLE-2012-BLG-0838 b
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Exoplanet Name : OGLE-2012-BLG-0838 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.2500 (Mjup) 79.4845 (Mearth)
Semi Major Axis / Orbital Distance Calculated 4.2000 (AU) 4.2000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 4278.26 (Days Est.)
Star Radiation at Atmospheric Boundary: 2.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 53.3 (K)
Blackbody T 0.3(K) 50.0 (K)
Blackbody T 0.7(K) 40.5 (K)
Tidally Locked Blackbody T 0.1(K) 63.3 (K)
Tidally Locked Blackbody T 0.3(K) 59.5 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Microlensing
Mass Detection : Microlensing
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : OGLE-2012-BLG-0838
Alternate Name :
Star Distance(LY) : 21591.5
Stellar Radius(Rsun) : 0.5 (Rsun Estimated)
Stellar Mass(Msun) : 0.5 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3300 (K)
Spectral type : M9
Metalicity : 0.0
Absolute Magnitude: 7.9
Apparent Magnitude: 22.0
Right Ascension(RA) 273.0042
Declination (DEC) -25.7117
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
OGLE-2012-BLG-0838 b
OGLE-2012-BLG-0838 b

  • OGLE-2012-BLG-0838 b is an exoplanet orbiting the star OGLE-2012-BLG-0838, located about 21591.5 light-years (6620.0 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star OGLE-2012-BLG-0838 has apparent magnitude of 22.0, with absolute magnitude of 7.9.
  • It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3300 with its spectral types of M9
  • (Projected orbit of OGLE-2012-BLG-0838 b around its host star OGLE-2012-BLG-0838)


  • The Star OGLE-2012-BLG-0838 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.117 AU ( 17506310.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.162 AU ( 24198295.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.246 AU ( 36872847.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.363 AU ( 54260009.8 km)
  • Radiation at Planetary Boundary of OGLE-2012-BLG-0838 b : 2.03 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star OGLE-2012-BLG-0838)



  • Kopparapu Recent Venus for Star OGLE-2012-BLG-0838 distance : 0.133 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star OGLE-2012-BLG-0838 distance : 0.168 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star OGLE-2012-BLG-0838 distance : 0.162 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star OGLE-2012-BLG-0838 distance : 0.178 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star OGLE-2012-BLG-0838 distance : 0.329 AU
  • Kopparapu Outer Boundary for Early Mars for Star OGLE-2012-BLG-0838 distance : 0.348 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star OGLE-2012-BLG-0838)



  • Original Kopparapu Recent Venus for Star OGLE-2012-BLG-0838 distance : 0.132 AU
  • Original Kopparapu Runaway Greenhouse for Star OGLE-2012-BLG-0838 distance : 0.174 AU
  • Original Kopparapu Moist Greenhouse for Star OGLE-2012-BLG-0838 distance : 0.174 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star OGLE-2012-BLG-0838 distance : 0.335 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star OGLE-2012-BLG-0838 distance : 0.348 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star OGLE-2012-BLG-0838)



    (Position in Stellar Map of star OGLE-2012-BLG-0838 and its Exoplanet OGLE-2012-BLG-0838 b)



    (Zoomed position in Stellar Map of star OGLE-2012-BLG-0838 and its Exoplanet OGLE-2012-BLG-0838 b (zoom level 3))