Imaginary Picture of TOI-1052 b

Display orbital revolution of TOI-1052 b around the hoststar TOI-1052
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Exoplanet Name : TOI-1052 b
Alternate Name : HD 212729 b
Status : Confirmed
Radius (Rjup / Re): 0.2560 (Rjup) 2.8695 (Rearth)
Mass (Mjup / Me): 0.0532 (Mjup) 16.9143 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0910 (AU) 0.0910 (AU Est.)
Eccentricity : 0.1800
Orbital Period(Yrs) 0.0250
Orbital Period(Observed/Estimated) 9.14 (Days Obs.) 9.14 (Days Est.)
Surface Gravity (G Earth) 2.0542
Star Radiation at Atmospheric Boundary: 337365.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1075.6 (K)
Blackbody T 0.3(K) 1010.1 (K)
Blackbody T 0.7(K) 817.3 (K)
Tidally Locked Blackbody T 0.1(K) 1279.2 (K)
Tidally Locked Blackbody T 0.3(K) 1201.3 (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-1052
Alternate Name : HD 212729
Star Distance(LY) : 419.8
Stellar Radius(Rsun) : 1.3 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 2.3 (GY)
Temperature : 6146 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.1
Absolute Magnitude: 4.0
Apparent Magnitude: 9.5
Right Ascension(RA) 337.5102
Declination (DEC) -75.6466
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-1052 b
TOI-1052 b

  • TOI-1052 b is an exoplanet orbiting the star TOI-1052, located about 419.8 light-years (128.7 pc) away from Solar System. Its discovery was publicly announced on 2023.
  • The host star TOI-1052 has apparent magnitude of 9.5, with absolute magnitude of 4.0.
  • It is 1.2 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 6146 with its spectral types of G0
  • In this planetary system, the extrasolar planet TOI-1052 b orbits around the star TOI-1052 every 9.1 days with its orbital distance of 0.09 AU ( 13617894.2 km)
  • (Projected orbit of TOI-1052 b around its host star TOI-1052)


  • The Star TOI-1052 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.034 AU ( 154735619.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.430 AU ( 213885063.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.179 AU ( 325913504.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.206 AU ( 479595998.7 km)
  • Radiation at Planetary Boundary of TOI-1052 b : 337365.06 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-1052)



  • Kopparapu Recent Venus for Star TOI-1052 distance : 1.048 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-1052 distance : 1.328 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-1052 distance : 1.282 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-1052 distance : 1.405 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1052 distance : 2.324 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-1052 distance : 2.451 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-1052)



  • Original Kopparapu Recent Venus for Star TOI-1052 distance : 1.058 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-1052 distance : 1.363 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-1052 distance : 1.400 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1052 distance : 2.366 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-1052 distance : 2.460 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-1052)



    (Position in Stellar Map of star TOI-1052 and its Exoplanet TOI-1052 b)



    (Zoomed position in Stellar Map of star TOI-1052 and its Exoplanet TOI-1052 b (zoom level 3))

    (Synthetic Spectrum of star TOI-1052*)
    *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