Imaginary Picture of KMT-2019-BLG-1806 b

Display orbital revolution of KMT-2019-BLG-1806 b around the hoststar KMT-2019-BLG-1806
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Exoplanet Name : KMT-2019-BLG-1806 b
Alternate Name : OGLE-2019-BLG-1250 b
Status : Confirmed
Radius (Rjup / Re): 0.1340 (Rjup) 1.5020 (Rearth)
Mass (Mjup / Me): 0.0147 (Mjup) 4.6705 (Mearth)
Semi Major Axis / Orbital Distance Calculated 3.0200 (AU) 3.0200 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 2228.36 (Days Est.)
Surface Gravity (G Earth) 2.0702
Star Radiation at Atmospheric Boundary: 6.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 71.3 (K)
Blackbody T 0.3(K) 66.9 (K)
Blackbody T 0.7(K) 54.1 (K)
Tidally Locked Blackbody T 0.1(K) 84.7 (K)
Tidally Locked Blackbody T 0.3(K) 79.6 (K)
Size Class: super-Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Microlensing
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : KMT-2019-BLG-1806
Alternate Name : OGLE-2019-BLG-1250
Star Distance(LY) : 21656.8
Stellar Radius(Rsun) : 0.6 (Rsun Estimated)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3300 (K)
Spectral type : M9
UV portion[%]: 0.2
Visible portion[%]: 11.2
IR portion[%]: 88.6
Metalicity : 0.0
Absolute Magnitude: 7.9
Apparent Magnitude: 22.0
Right Ascension(RA) 270.5375
Declination (DEC) -29.4150
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
KMT-2019-BLG-1806 b
KMT-2019-BLG-1806 b

  • KMT-2019-BLG-1806 b is an exoplanet orbiting the star KMT-2019-BLG-1806, located about 21656.8 light-years (6640.0 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star KMT-2019-BLG-1806 has apparent magnitude of 22.0, with absolute magnitude of 7.9.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3300 with its spectral types of M9
  • (Projected orbit of KMT-2019-BLG-1806 b around its host star KMT-2019-BLG-1806)


  • The Star KMT-2019-BLG-1806 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.151 AU ( 22525930.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.208 AU ( 31136723.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.317 AU ( 47445475.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.467 AU ( 69818095.6 km)
  • Radiation at Planetary Boundary of KMT-2019-BLG-1806 b : 6.50 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star KMT-2019-BLG-1806)



  • Kopparapu Recent Venus for Star KMT-2019-BLG-1806 distance : 0.171 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star KMT-2019-BLG-1806 distance : 0.216 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star KMT-2019-BLG-1806 distance : 0.208 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star KMT-2019-BLG-1806 distance : 0.229 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star KMT-2019-BLG-1806 distance : 0.424 AU
  • Kopparapu Outer Boundary for Early Mars for Star KMT-2019-BLG-1806 distance : 0.447 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star KMT-2019-BLG-1806)



  • Original Kopparapu Recent Venus for Star KMT-2019-BLG-1806 distance : 0.169 AU
  • Original Kopparapu Runaway Greenhouse for Star KMT-2019-BLG-1806 distance : 0.224 AU
  • Original Kopparapu Moist Greenhouse for Star KMT-2019-BLG-1806 distance : 0.224 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star KMT-2019-BLG-1806 distance : 0.431 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star KMT-2019-BLG-1806 distance : 0.448 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star KMT-2019-BLG-1806)



    (Position in Stellar Map of star KMT-2019-BLG-1806 and its Exoplanet KMT-2019-BLG-1806 b)



    (Zoomed position in Stellar Map of star KMT-2019-BLG-1806 and its Exoplanet KMT-2019-BLG-1806 b (zoom level 3))

    (Synthetic Spectrum of star KMT-2019-BLG-1806*)
    *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