Imaginary Picture of TOI-2109 b

Display orbital revolution of TOI-2109 b around the hoststar TOI-2109
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Exoplanet Name : TOI-2109 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.3470 (Rjup) 15.0985 (Rearth)
Mass (Mjup / Me): 5.0200 (Mjup) 1596.0488 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0170 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0018
Orbital Period(Observed/Estimated) 0.67 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 7.0013
Star Radiation at Atmospheric Boundary: 21862883.3 (W/m2)
Measured Temperature (K) 3631.0 (K)
Blackbody T 0.1(K) 3051.9 (K)
Blackbody T 0.3(K) 2866.0 (K)
Blackbody T 0.7(K) 2318.9 (K)
Tidally Locked Blackbody T 0.1(K) 3629.3 (K)
Tidally Locked Blackbody T 0.3(K) 3408.3 (K)
Size Class: Super-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-2109
Alternate Name :
Star Distance(LY) : 861.1
Stellar Radius(Rsun) : 1.7 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.4 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6500 (K)
Spectral type : F0
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.0
Absolute Magnitude: 2.9
Apparent Magnitude: 10.0
Right Ascension(RA) 253.1875
Declination (DEC) 16.5800
Hubble Space Telescope Guide Star Catalog (GSC) ID 01521-00208
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=TOI-2109&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-2109 b
TOI-2109 b

  • TOI-2109 b is an exoplanet orbiting the star TOI-2109, located about 861.1 light-years (264.0 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star TOI-2109 has apparent magnitude of 10.0, with absolute magnitude of 2.9.
  • It is 1.4 times more massive and 1.7 times bigger compared with our Sun. The surface temperature is 6500 with its spectral types of F0
  • In this planetary system, the extrasolar planet TOI-2109 b orbits around the star TOI-2109 every 0.7 days with its orbital distance of 0.02 AU ( 2541783.2 km)
  • (Projected orbit of TOI-2109 b around its host star TOI-2109)


  • The Star TOI-2109 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.554 AU ( 232499761.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.148 AU ( 321375429.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.273 AU ( 489705034.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.817 AU ( 720622411.3 km)
  • Radiation at Planetary Boundary of TOI-2109 b : 21862883.31 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-2109)



  • Kopparapu Recent Venus for Star TOI-2109 distance : 1.542 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-2109 distance : 1.953 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-2109 distance : 1.886 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-2109 distance : 2.067 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2109 distance : 3.398 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-2109 distance : 3.584 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-2109)



  • Original Kopparapu Recent Venus for Star TOI-2109 distance : 1.569 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-2109 distance : 2.002 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-2109 distance : 2.075 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2109 distance : 3.459 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-2109 distance : 3.598 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-2109)



    (Position in Stellar Map of star TOI-2109 and its Exoplanet TOI-2109 b)



    (Zoomed position in Stellar Map of star TOI-2109 and its Exoplanet TOI-2109 b (zoom level 3))

    (Synthetic Spectrum of star TOI-2109*)
    *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