Imaginary Picture of TOI-1224 b

Display orbital revolution of TOI-1224 b around the hoststar TOI-1224
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Exoplanet Name : TOI-1224 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.1870 (Rjup) 2.0961 (Rearth)
Mass (Mjup / Me): 0.0165 (Mjup) 5.2508 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0355 (AU) 0.0355 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0114
Orbital Period(Observed/Estimated) 4.18 (Days Obs.) 3.86 (Days Est.)
Surface Gravity (G Earth) 1.1951
Star Radiation at Atmospheric Boundary: 19435.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 527.0 (K)
Blackbody T 0.3(K) 494.9 (K)
Blackbody T 0.7(K) 400.4 (K)
Tidally Locked Blackbody T 0.1(K) 626.7 (K)
Tidally Locked Blackbody T 0.3(K) 588.5 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : TOI-1224
Alternate Name :
Star Distance(LY) : 121.6
Stellar Radius(Rsun) : 0.4 (Rsun Measured)
Stellar Mass(Msun) : 0.4 (Msun Measured) 0.3 (Msun Estimated)
Star Age : 0.2 (GY)
Temperature : 3326 (K)
Spectral type : M5
UV portion[%]: 0.2
Visible portion[%]: 12.5
IR portion[%]: 87.2
Metalicity : 0.0
Absolute Magnitude: 11.1
Apparent Magnitude: 14.0
Right Ascension(RA) 37.1980
Declination (DEC) -80.8991
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-1224 b
TOI-1224 b

  • TOI-1224 b is an exoplanet orbiting the star TOI-1224, located about 121.6 light-years (37.3 pc) away from Solar System. Its discovery was publicly announced on 2024.
  • The host star TOI-1224 has apparent magnitude of 14.0, with absolute magnitude of 11.1.
  • It is 0.4 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3326 with its spectral types of M5
  • In this planetary system, the extrasolar planet TOI-1224 b orbits around the star TOI-1224 every 4.2 days with its orbital distance of 0.04 AU ( 5310724.4 km)
  • (Projected orbit of TOI-1224 b around its host star TOI-1224)


  • The Star TOI-1224 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.097 AU ( 14483848.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.134 AU ( 20020463.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.204 AU ( 30506755.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.300 AU ( 44892027.5 km)
  • Radiation at Planetary Boundary of TOI-1224 b : 19435.68 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-1224)



  • Kopparapu Recent Venus for Star TOI-1224 distance : 0.110 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-1224 distance : 0.139 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-1224 distance : 0.134 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-1224 distance : 0.147 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1224 distance : 0.272 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-1224 distance : 0.287 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-1224)



  • Original Kopparapu Recent Venus for Star TOI-1224 distance : 0.109 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-1224 distance : 0.144 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-1224 distance : 0.144 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1224 distance : 0.277 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-1224 distance : 0.288 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-1224)



    (Position in Stellar Map of star TOI-1224 and its Exoplanet TOI-1224 b)



    (Zoomed position in Stellar Map of star TOI-1224 and its Exoplanet TOI-1224 b (zoom level 3))

    (Synthetic Spectrum of star TOI-1224*)
    *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