Imaginary Picture of TOI-244 b

Display orbital revolution of TOI-244 b around the hoststar GJ 1018
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Exoplanet Name : TOI-244 b
Alternate Name : GJ 1018 b
Status : Confirmed
Radius (Rjup / Re): 0.1356 (Rjup) 1.5199 (Rearth)
Mass (Mjup / Me): 0.0084 (Mjup) 2.6802 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0559 (AU) 0.0559 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0203
Orbital Period(Observed/Estimated) 7.40 (Days Obs.) 7.39 (Days Est.)
Surface Gravity (G Earth) 1.1602
Star Radiation at Atmospheric Boundary: 9985.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 446.2 (K)
Blackbody T 0.3(K) 419.0 (K)
Blackbody T 0.7(K) 339.0 (K)
Tidally Locked Blackbody T 0.1(K) 530.6 (K)
Tidally Locked Blackbody T 0.3(K) 498.3 (K)
Size Class: super-Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Theoretical
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : GJ 1018
Alternate Name : TOI-244
Star Distance(LY) : 72.0
Stellar Radius(Rsun) : 0.4 (Rsun Measured)
Stellar Mass(Msun) : 0.4 (Msun Measured) 0.4 (Msun Estimated)
Star Age : 7.0 (GY)
Temperature : 3433 (K)
Spectral type : M2
UV portion[%]: 0.2
Visible portion[%]: 11.0
IR portion[%]: 88.8
Metalicity : -0.4
Absolute Magnitude: 11.0
Apparent Magnitude: 12.7
Right Ascension(RA) 10.5708
Declination (DEC) -36.7181
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
TOI-244 b
TOI-244 b

  • TOI-244 b is an exoplanet orbiting the star GJ 1018, located about 72.0 light-years (22.1 pc) away from Solar System. Its discovery was publicly announced on 2023.
  • The host star GJ 1018 has apparent magnitude of 12.7, with absolute magnitude of 11.0.
  • It is 0.4 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3433 with its spectral types of M2
  • In this planetary system, the extrasolar planet TOI-244 b orbits around the star GJ 1018 every 7.4 days with its orbital distance of 0.06 AU ( 8362521.0 km)
  • (Projected orbit of TOI-244 b around its host star GJ 1018)


  • The Star GJ 1018 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.109 AU ( 16347430.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.151 AU ( 22596420.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.230 AU ( 34431944.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.339 AU ( 50668114.3 km)
  • Radiation at Planetary Boundary of TOI-244 b : 9985.37 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 1018)



  • Kopparapu Recent Venus for Star GJ 1018 distance : 0.124 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 1018 distance : 0.156 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 1018 distance : 0.151 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 1018 distance : 0.166 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 1018 distance : 0.305 AU
  • Kopparapu Outer Boundary for Early Mars for Star GJ 1018 distance : 0.322 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 1018)



  • Original Kopparapu Recent Venus for Star GJ 1018 distance : 0.123 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 1018 distance : 0.162 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 1018 distance : 0.162 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 1018 distance : 0.310 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 1018 distance : 0.323 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 1018)



    (Position in Stellar Map of star GJ 1018 and its Exoplanet TOI-244 b)



    (Zoomed position in Stellar Map of star GJ 1018 and its Exoplanet TOI-244 b (zoom level 3))

    (Synthetic Spectrum of star GJ 1018*)
    *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