Imaginary Picture of TOI-2338 b

Display orbital revolution of TOI-2338 b around the hoststar TOI-2338
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Exoplanet Name : TOI-2338 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.0000 (Rjup) 11.2090 (Rearth)
Mass (Mjup / Me): 5.9800 (Mjup) 1901.2692 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1580 (AU) 0.1580 (AU Est.)
Eccentricity : 0.6760
Orbital Period(Yrs) 0.0620
Orbital Period(Observed/Estimated) 22.65 (Days Obs.) 23.05 (Days Est.)
Surface Gravity (G Earth) 15.1325
Star Radiation at Atmospheric Boundary: 52543.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 675.7 (K)
Blackbody T 0.3(K) 634.6 (K)
Blackbody T 0.7(K) 513.4 (K)
Tidally Locked Blackbody T 0.1(K) 803.6 (K)
Tidally Locked Blackbody T 0.3(K) 754.6 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : TOI-2338
Alternate Name :
Star Distance(LY) : 1030.7
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 7.0 (GY)
Temperature : 5581 (K)
Spectral type : G6
UV portion[%]: 7.2
Visible portion[%]: 43.8
IR portion[%]: 49.0
Metalicity : 0.2
Absolute Magnitude: 5.0
Apparent Magnitude: 12.5
Right Ascension(RA) 81.3458
Declination (DEC) -34.6683
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-2338 b
TOI-2338 b

  • TOI-2338 b is an exoplanet orbiting the star TOI-2338, located about 1030.7 light-years (316.0 pc) away from Solar System. Its discovery was publicly announced on 2023.
  • The host star TOI-2338 has apparent magnitude of 12.5, with absolute magnitude of 5.0.
  • It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5581 with its spectral types of G6
  • In this planetary system, the extrasolar planet TOI-2338 b orbits around the star TOI-2338 every 22.7 days with its orbital distance of 0.16 AU ( 23636463.6 km)
  • (Projected orbit of TOI-2338 b around its host star TOI-2338)


  • The Star TOI-2338 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.709 AU ( 105991602.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.979 AU ( 146508093.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.492 AU ( 223245911.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.196 AU ( 328516138.6 km)
  • Radiation at Planetary Boundary of TOI-2338 b : 52543.30 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-2338)



  • Kopparapu Recent Venus for Star TOI-2338 distance : 0.743 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-2338 distance : 0.941 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-2338 distance : 0.909 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-2338 distance : 0.996 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2338 distance : 1.671 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-2338 distance : 1.762 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-2338)



  • Original Kopparapu Recent Venus for Star TOI-2338 distance : 0.741 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-2338 distance : 0.967 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-2338 distance : 0.981 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2338 distance : 1.700 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-2338 distance : 1.768 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-2338)



    (Position in Stellar Map of star TOI-2338 and its Exoplanet TOI-2338 b)



    (Zoomed position in Stellar Map of star TOI-2338 and its Exoplanet TOI-2338 b (zoom level 3))

    (Synthetic Spectrum of star TOI-2338*)
    *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