Imaginary Picture of TOI-5398 b

Display orbital revolution of TOI-5398 b around the hoststar TOI-5398
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Exoplanet Name : TOI-5398 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.0080 (Rjup) 11.2987 (Rearth)
Mass (Mjup / Me): 0.1847 (Mjup) 58.7231 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0980 (AU) 0.0980 (AU Est.)
Eccentricity : 0.1300
Orbital Period(Yrs) 0.0290
Orbital Period(Observed/Estimated) 10.59 (Days Obs.) 10.62 (Days Est.)
Surface Gravity (G Earth) 0.4600
Star Radiation at Atmospheric Boundary: 16790.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 508.1 (K)
Blackbody T 0.3(K) 477.1 (K)
Blackbody T 0.7(K) 386.0 (K)
Tidally Locked Blackbody T 0.1(K) 604.2 (K)
Tidally Locked Blackbody T 0.3(K) 567.4 (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-5398
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (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: 25.0
Apparent Magnitude: 22.0
Right Ascension(RA) 161.8792
Declination (DEC) 36.3294
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-5398 b
TOI-5398 b

  • TOI-5398 b is an exoplanet orbiting the star TOI-5398. Its discovery was publicly announced on 2022.
  • The host star TOI-5398 has apparent magnitude of 22.0, with absolute magnitude of 25.0.
  • It is 1.1 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 3300 with its spectral types of M9
  • In this planetary system, the extrasolar planet TOI-5398 b orbits around the star TOI-5398 every 10.6 days with its orbital distance of 0.10 AU ( 14660591.3 km)
  • (Projected orbit of TOI-5398 b around its host star TOI-5398)


  • The Star TOI-5398 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.248 AU ( 37163307.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.343 AU ( 51369403.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.523 AU ( 78275602.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.770 AU ( 115185978.6 km)
  • Radiation at Planetary Boundary of TOI-5398 b : 16790.56 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-5398)



  • Kopparapu Recent Venus for Star TOI-5398 distance : 0.281 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-5398 distance : 0.356 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-5398 distance : 0.344 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-5398 distance : 0.378 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-5398 distance : 0.699 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-5398 distance : 0.738 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-5398)



  • Original Kopparapu Recent Venus for Star TOI-5398 distance : 0.280 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-5398 distance : 0.369 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-5398 distance : 0.370 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-5398 distance : 0.711 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-5398 distance : 0.739 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-5398)



    (Position in Stellar Map of star TOI-5398 and its Exoplanet TOI-5398 b)



    (Zoomed position in Stellar Map of star TOI-5398 and its Exoplanet TOI-5398 b (zoom level 3))

    (Synthetic Spectrum of star TOI-5398*)
    *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