Imaginary Picture of KMT-2019-BLG-0253 b

Display orbital revolution of KMT-2019-BLG-0253 b around the hoststar KMT-2019-BLG-0253
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Exoplanet Name : KMT-2019-BLG-0253 b
Alternate Name :
Radius (Rjup / Re): 0.1590 (Rjup) 1.7825 (Rearth)
Mass (Mjup / Me): 0.0289 (Mjup) 9.1884 (Mearth)
Semi Major Axis / Orbital Distance Calculated 3.1000 (AU) 3.1000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 2382.78 (Days Est.)
Surface Gravity (G Earth) 2.8918
Star Radiation at Atmospheric Boundary: 5.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 68.8 (K)
Blackbody T 0.3(K) 64.6 (K)
Blackbody T 0.7(K) 52.3 (K)
Tidally Locked Blackbody T 0.1(K) 81.8 (K)
Tidally Locked Blackbody T 0.3(K) 76.8 (K)
Size Class: super-Earth-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 : KMT-2019-BLG-0253
Alternate Name :
Star Distance(LY) : 15981.6
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: 8.5
Apparent Magnitude: 22.0
Right Ascension(RA) 267.8833
Declination (DEC) -29.5656
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-0253 b
KMT-2019-BLG-0253 b

  • KMT-2019-BLG-0253 b is an exoplanet orbiting the star KMT-2019-BLG-0253, located about 15981.6 light-years (4900.0 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star KMT-2019-BLG-0253 has apparent magnitude of 22.0, with absolute magnitude of 8.5.
  • 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-0253 b around its host star KMT-2019-BLG-0253)


  • The Star KMT-2019-BLG-0253 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.144 AU ( 21543072.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.199 AU ( 29778156.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.303 AU ( 45375320.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.446 AU ( 66771771.6 km)
  • Radiation at Planetary Boundary of KMT-2019-BLG-0253 b : 5.64 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star KMT-2019-BLG-0253)



  • Kopparapu Recent Venus for Star KMT-2019-BLG-0253 distance : 0.163 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star KMT-2019-BLG-0253 distance : 0.206 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star KMT-2019-BLG-0253 distance : 0.199 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star KMT-2019-BLG-0253 distance : 0.219 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star KMT-2019-BLG-0253 distance : 0.405 AU
  • Kopparapu Outer Boundary for Early Mars for Star KMT-2019-BLG-0253 distance : 0.428 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star KMT-2019-BLG-0253)



  • Original Kopparapu Recent Venus for Star KMT-2019-BLG-0253 distance : 0.162 AU
  • Original Kopparapu Runaway Greenhouse for Star KMT-2019-BLG-0253 distance : 0.214 AU
  • Original Kopparapu Moist Greenhouse for Star KMT-2019-BLG-0253 distance : 0.214 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star KMT-2019-BLG-0253 distance : 0.412 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star KMT-2019-BLG-0253 distance : 0.428 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star KMT-2019-BLG-0253)



    (Position in Stellar Map of star KMT-2019-BLG-0253 and its Exoplanet KMT-2019-BLG-0253 b)



    (Zoomed position in Stellar Map of star KMT-2019-BLG-0253 and its Exoplanet KMT-2019-BLG-0253 b (zoom level 3))

    (Synthetic Spectrum of star KMT-2019-BLG-0253*)
    *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