Imaginary Picture of TOI-2373 b

Display orbital revolution of TOI-2373 b around the hoststar TOI-2373
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Exoplanet Name : TOI-2373 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9300 (Rjup) 10.4244 (Rearth)
Mass (Mjup / Me): 9.3000 (Mjup) 2956.8234 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1120 (AU) 0.1120 (AU Est.)
Eccentricity : 0.1120
Orbital Period(Yrs) 0.0365
Orbital Period(Observed/Estimated) 13.34 (Days Obs.) 13.42 (Days Est.)
Surface Gravity (G Earth) 27.2098
Star Radiation at Atmospheric Boundary: 120630.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 831.8 (K)
Blackbody T 0.3(K) 781.1 (K)
Blackbody T 0.7(K) 632.0 (K)
Tidally Locked Blackbody T 0.1(K) 989.2 (K)
Tidally Locked Blackbody T 0.3(K) 928.9 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : "Primary Transit, Radial Velocity"
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : TOI-2373
Alternate Name :
Star Distance(LY) : 1660.1
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 5.9 (GY)
Temperature : 5651 (K)
Spectral type : G5
UV portion[%]: 7.4
Visible portion[%]: 44.2
IR portion[%]: 48.4
Metalicity : 0.3
Absolute Magnitude: 4.7
Apparent Magnitude: 13.2
Right Ascension(RA) 61.6875
Declination (DEC) -16.7558
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.cds.unistra.fr/simbad/sim-basic?Ident=TOI-2373&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-2373 b
TOI-2373 b

  • TOI-2373 b is an exoplanet orbiting the star TOI-2373, located about 1660.1 light-years (509.0 pc) away from Solar System. Its discovery was publicly announced on 2023.
  • The host star TOI-2373 has apparent magnitude of 13.2, with absolute magnitude of 4.7.
  • It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5651 with its spectral types of G5
  • In this planetary system, the extrasolar planet TOI-2373 b orbits around the star TOI-2373 every 13.3 days with its orbital distance of 0.11 AU ( 16754961.5 km)
  • (Projected orbit of TOI-2373 b around its host star TOI-2373)


  • The Star TOI-2373 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.761 AU ( 113841710.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.052 AU ( 157358994.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.603 AU ( 239780283.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.359 AU ( 352847191.6 km)
  • Radiation at Planetary Boundary of TOI-2373 b : 120630.01 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-2373)



  • Kopparapu Recent Venus for Star TOI-2373 distance : 0.795 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-2373 distance : 1.006 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-2373 distance : 0.972 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-2373 distance : 1.066 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2373 distance : 1.783 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-2373 distance : 1.881 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-2373)



  • Original Kopparapu Recent Venus for Star TOI-2373 distance : 0.794 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-2373 distance : 1.035 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-2373 distance : 1.050 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2373 distance : 1.815 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-2373 distance : 1.887 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-2373)



    (Position in Stellar Map of star TOI-2373 and its Exoplanet TOI-2373 b)



    (Zoomed position in Stellar Map of star TOI-2373 and its Exoplanet TOI-2373 b (zoom level 3))

    (Synthetic Spectrum of star TOI-2373*)
    *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