Imaginary Picture of TOI-824 b

Display orbital revolution of TOI-824 b around the hoststar TOI-824
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Exoplanet Name : TOI-824 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.2610 (Rjup) 2.9260 (Rearth)
Mass (Mjup / Me): 0.0581 (Mjup) 18.4735 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0218 (AU) 0.0218 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0038
Orbital Period(Observed/Estimated) 1.39 (Days Obs.) 1.41 (Days Est.)
Surface Gravity (G Earth) 2.1577
Star Radiation at Atmospheric Boundary: 543211.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1211.7 (K)
Blackbody T 0.3(K) 1137.9 (K)
Blackbody T 0.7(K) 920.7 (K)
Tidally Locked Blackbody T 0.1(K) 1440.9 (K)
Tidally Locked Blackbody T 0.3(K) 1353.2 (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-824
Alternate Name :
Star Distance(LY) : 207.8
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 10.9 (GY)
Temperature : 4616 (K)
Spectral type : K4V
UV portion[%]: 1.9
Visible portion[%]: 33.0
IR portion[%]: 65.1
Metalicity : -0.1
Absolute Magnitude: 7.1
Apparent Magnitude: 11.1
Right Ascension(RA) 222.1667
Declination (DEC) -57.5889
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-824 b
TOI-824 b

  • TOI-824 b is an exoplanet orbiting the star TOI-824, located about 207.8 light-years (63.7 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star TOI-824 has apparent magnitude of 11.1, with absolute magnitude of 7.1.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4616 with its spectral types of K4V
  • In this planetary system, the extrasolar planet TOI-824 b orbits around the star TOI-824 every 1.4 days with its orbital distance of 0.02 AU ( 3256745.6 km)
  • (Projected orbit of TOI-824 b around its host star TOI-824)


  • The Star TOI-824 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.314 AU ( 46956814.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.434 AU ( 64906588.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.661 AU ( 98903277.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.973 AU ( 145540505.3 km)
  • Radiation at Planetary Boundary of TOI-824 b : 543211.53 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-824)



  • Kopparapu Recent Venus for Star TOI-824 distance : 0.345 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-824 distance : 0.437 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-824 distance : 0.422 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-824 distance : 0.464 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-824 distance : 0.805 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-824 distance : 0.849 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-824)



  • Original Kopparapu Recent Venus for Star TOI-824 distance : 0.341 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-824 distance : 0.451 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-824 distance : 0.451 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-824 distance : 0.818 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-824 distance : 0.851 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-824)



    (Position in Stellar Map of star TOI-824 and its Exoplanet TOI-824 b)



    (Zoomed position in Stellar Map of star TOI-824 and its Exoplanet TOI-824 b (zoom level 3))

    (Synthetic Spectrum of star TOI-824*)
    *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