Imaginary Picture of TOI-2194 b

Display orbital revolution of TOI-2194 b around the hoststar TOI-2194
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Exoplanet Name : TOI-2194 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.1775 (Rjup) 1.9896 (Rearth)
Mass (Mjup / Me): 4.6200 (Mjup) 1468.8736 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1093 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0420
Orbital Period(Observed/Estimated) 15.34 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 371.0684
Star Radiation at Atmospheric Boundary: 22633.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 547.4 (K)
Blackbody T 0.3(K) 514.1 (K)
Blackbody T 0.7(K) 416.0 (K)
Tidally Locked Blackbody T 0.1(K) 651.0 (K)
Tidally Locked Blackbody T 0.3(K) 611.4 (K)
Size Class: sub-Neptune-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-2194
Alternate Name :
Star Distance(LY) : 63.8
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4669 (K)
Spectral type : K4
UV portion[%]: 2.1
Visible portion[%]: 33.7
IR portion[%]: 64.2
Metalicity : 0.0
Absolute Magnitude: 7.0
Apparent Magnitude: 8.4
Right Ascension(RA) 299.1583
Declination (DEC) -31.3353
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-2194 b
TOI-2194 b

  • TOI-2194 b is an exoplanet orbiting the star TOI-2194, located about 63.8 light-years (19.6 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star TOI-2194 has apparent magnitude of 8.4, with absolute magnitude of 7.0.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4669 with its spectral types of K4
  • In this planetary system, the extrasolar planet TOI-2194 b orbits around the star TOI-2194 every 15.3 days with its orbital distance of 0.11 AU ( 16347353.0 km)
  • (Projected orbit of TOI-2194 b around its host star TOI-2194)


  • The Star TOI-2194 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.322 AU ( 48111951.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.445 AU ( 66503290.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.677 AU ( 101336296.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.997 AU ( 149120800.1 km)
  • Radiation at Planetary Boundary of TOI-2194 b : 22633.44 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-2194)



  • Kopparapu Recent Venus for Star TOI-2194 distance : 0.353 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-2194 distance : 0.447 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-2194 distance : 0.432 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-2194 distance : 0.474 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2194 distance : 0.821 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-2194 distance : 0.866 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-2194)



  • Original Kopparapu Recent Venus for Star TOI-2194 distance : 0.348 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-2194 distance : 0.461 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-2194 distance : 0.461 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2194 distance : 0.835 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-2194 distance : 0.868 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-2194)



    (Position in Stellar Map of star TOI-2194 and its Exoplanet TOI-2194 b)



    (Zoomed position in Stellar Map of star TOI-2194 and its Exoplanet TOI-2194 b (zoom level 3))

    (Synthetic Spectrum of star TOI-2194*)
    *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