Imaginary Picture of TOI-552 b

Display orbital revolution of TOI-552 b around the hoststar TOI-552
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Exoplanet Name : TOI-552 b
Alternate Name : HATS-75 b
Status : Confirmed
Radius (Rjup / Re): 0.8840 (Rjup) 9.9088 (Rearth)
Mass (Mjup / Me): 0.4910 (Mjup) 156.1076 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0327 (AU) 0.0327 (AU Est.)
Eccentricity : 0.0640
Orbital Period(Yrs) 0.0076
Orbital Period(Observed/Estimated) 2.79 (Days Obs.) 2.79 (Days Est.)
Surface Gravity (G Earth) 1.5900
Star Radiation at Atmospheric Boundary: 80717.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 752.3 (K)
Blackbody T 0.3(K) 706.5 (K)
Blackbody T 0.7(K) 571.6 (K)
Tidally Locked Blackbody T 0.1(K) 894.6 (K)
Tidally Locked Blackbody T 0.3(K) 840.1 (K)
Size Class: 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-552
Alternate Name : HATS-75
Star Distance(LY) : 637.0
Stellar Radius(Rsun) : 0.6 (Rsun Measured)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 14.9 (GY)
Temperature : 3790 (K)
Spectral type : M0
UV portion[%]: 0.3
Visible portion[%]: 13.6
IR portion[%]: 86.1
Metalicity : 0.5
Absolute Magnitude: 9.3
Apparent Magnitude: 15.8
Right Ascension(RA) 60.9500
Declination (DEC) -25.4089
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.cds.unistra.fr/simbad/sim-basic?Ident=HATS-75&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-552 b
TOI-552 b

  • TOI-552 b is an exoplanet orbiting the star TOI-552, located about 637.0 light-years (195.3 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star TOI-552 has apparent magnitude of 15.8, with absolute magnitude of 9.3.
  • It is 0.6 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3790 with its spectral types of M0
  • In this planetary system, the extrasolar planet TOI-552 b orbits around the star TOI-552 every 2.8 days with its orbital distance of 0.03 AU ( 4898133.5 km)
  • (Projected orbit of TOI-552 b around its host star TOI-552)


  • The Star TOI-552 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.182 AU ( 27223496.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.252 AU ( 37629985.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.383 AU ( 57339771.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.564 AU ( 84377984.9 km)
  • Radiation at Planetary Boundary of TOI-552 b : 80717.18 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-552)



  • Kopparapu Recent Venus for Star TOI-552 distance : 0.205 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-552 distance : 0.259 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-552 distance : 0.250 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-552 distance : 0.275 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-552 distance : 0.497 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-552 distance : 0.524 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-552)



  • Original Kopparapu Recent Venus for Star TOI-552 distance : 0.203 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-552 distance : 0.268 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-552 distance : 0.268 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-552 distance : 0.505 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-552 distance : 0.525 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-552)



    (Position in Stellar Map of star TOI-552 and its Exoplanet TOI-552 b)



    (Zoomed position in Stellar Map of star TOI-552 and its Exoplanet TOI-552 b (zoom level 3))

    (Synthetic Spectrum of star TOI-552*)
    *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