Imaginary Picture of OGLE-2018-BLG-1544 b

Display orbital revolution of OGLE-2018-BLG-1544 b around the hoststar OGLE-2018-BLG-1544
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Exoplanet Name : OGLE-2018-BLG-1544 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 11.2000 (Mjup) 3560.9056 (Mearth)
Semi Major Axis / Orbital Distance Calculated 6.2100 (AU) 6.2100 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 7178.47 (Days Est.)
Surface Gravity (G Earth) 34.3889
Star Radiation at Atmospheric Boundary: 1.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 46.3 (K)
Blackbody T 0.3(K) 43.5 (K)
Blackbody T 0.7(K) 35.2 (K)
Tidally Locked Blackbody T 0.1(K) 55.1 (K)
Tidally Locked Blackbody T 0.3(K) 51.7 (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-2018-BLG-1544
Alternate Name :
Star Distance(LY) : 20547.8
Stellar Radius(Rsun) : 0.6 (Rsun Estimated)
Stellar Mass(Msun) : 0.6 (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: 8.0
Apparent Magnitude: 22.0
Right Ascension(RA) 269.1292
Declination (DEC) -30.4028
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-2018-BLG-1544 b
OGLE-2018-BLG-1544 b

  • OGLE-2018-BLG-1544 b is an exoplanet orbiting the star OGLE-2018-BLG-1544, located about 20547.8 light-years (6300.0 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star OGLE-2018-BLG-1544 has apparent magnitude of 22.0, with absolute magnitude of 8.0.
  • It is 0.6 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 OGLE-2018-BLG-1544 b around its host star OGLE-2018-BLG-1544)


  • The Star OGLE-2018-BLG-1544 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.131 AU ( 19564667.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.181 AU ( 27043483.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.275 AU ( 41208284.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.405 AU ( 60639795.4 km)
  • Radiation at Planetary Boundary of OGLE-2018-BLG-1544 b : 1.16 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star OGLE-2018-BLG-1544)



  • Kopparapu Recent Venus for Star OGLE-2018-BLG-1544 distance : 0.148 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star OGLE-2018-BLG-1544 distance : 0.187 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star OGLE-2018-BLG-1544 distance : 0.181 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star OGLE-2018-BLG-1544 distance : 0.199 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star OGLE-2018-BLG-1544 distance : 0.368 AU
  • Kopparapu Outer Boundary for Early Mars for Star OGLE-2018-BLG-1544 distance : 0.389 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star OGLE-2018-BLG-1544)



  • Original Kopparapu Recent Venus for Star OGLE-2018-BLG-1544 distance : 0.147 AU
  • Original Kopparapu Runaway Greenhouse for Star OGLE-2018-BLG-1544 distance : 0.194 AU
  • Original Kopparapu Moist Greenhouse for Star OGLE-2018-BLG-1544 distance : 0.195 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star OGLE-2018-BLG-1544 distance : 0.374 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star OGLE-2018-BLG-1544 distance : 0.389 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star OGLE-2018-BLG-1544)



    (Position in Stellar Map of star OGLE-2018-BLG-1544 and its Exoplanet OGLE-2018-BLG-1544 b)



    (Zoomed position in Stellar Map of star OGLE-2018-BLG-1544 and its Exoplanet OGLE-2018-BLG-1544 b (zoom level 3))

    (Synthetic Spectrum of star OGLE-2018-BLG-1544*)
    *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