Imaginary Picture of HATS-76 b

Display orbital revolution of HATS-76 b around the hoststar HATS-76
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Exoplanet Name : HATS-76 b
Alternate Name : TOI-555 b
Status : Confirmed
Radius (Rjup / Re): 1.0790 (Rjup) 12.0945 (Rearth)
Mass (Mjup / Me): 2.6290 (Mjup) 835.8590 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0266 (AU) 0.0266 (AU Est.)
Eccentricity : 0.0620
Orbital Period(Yrs) 0.0053
Orbital Period(Observed/Estimated) 1.94 (Days Obs.) 1.95 (Days Est.)
Surface Gravity (G Earth) 5.7142
Star Radiation at Atmospheric Boundary: 176936.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 915.4 (K)
Blackbody T 0.3(K) 859.6 (K)
Blackbody T 0.7(K) 695.5 (K)
Tidally Locked Blackbody T 0.1(K) 1088.6 (K)
Tidally Locked Blackbody T 0.3(K) 1022.3 (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 : HATS-76
Alternate Name : TOI-555
Star Distance(LY) : 1272.0
Stellar Radius(Rsun) : 0.6 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 4.6 (GY)
Temperature : 4016 (K)
Spectral type : K7
UV portion[%]: 0.7
Visible portion[%]: 24.1
IR portion[%]: 75.2
Metalicity : 0.3
Absolute Magnitude: 14.0
Apparent Magnitude: 22.0
Right Ascension(RA) 70.3417
Declination (DEC) -32.3206
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-76&submit=SIMBAD+search
Open Exoplanet Database Link
HATS-76 b
HATS-76 b

  • HATS-76 b is an exoplanet orbiting the star HATS-76, located about 1272.0 light-years (390.0 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star HATS-76 has apparent magnitude of 22.0, with absolute magnitude of 14.0.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 4016 with its spectral types of K7
  • In this planetary system, the extrasolar planet HATS-76 b orbits around the star HATS-76 every 1.9 days with its orbital distance of 0.03 AU ( 3976311.4 km)
  • (Projected orbit of HATS-76 b around its host star HATS-76)


  • The Star HATS-76 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.219 AU ( 32720494.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.302 AU ( 45228273.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.461 AU ( 68917880.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.678 AU ( 101415680.0 km)
  • Radiation at Planetary Boundary of HATS-76 b : 176936.87 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HATS-76)



  • Kopparapu Recent Venus for Star HATS-76 distance : 0.245 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HATS-76 distance : 0.310 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HATS-76 distance : 0.299 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HATS-76 distance : 0.329 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-76 distance : 0.588 AU
  • Kopparapu Outer Boundary for Early Mars for Star HATS-76 distance : 0.620 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HATS-76)



  • Original Kopparapu Recent Venus for Star HATS-76 distance : 0.242 AU
  • Original Kopparapu Runaway Greenhouse for Star HATS-76 distance : 0.321 AU
  • Original Kopparapu Moist Greenhouse for Star HATS-76 distance : 0.320 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-76 distance : 0.597 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HATS-76 distance : 0.621 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HATS-76)



    (Position in Stellar Map of star HATS-76 and its Exoplanet HATS-76 b)



    (Zoomed position in Stellar Map of star HATS-76 and its Exoplanet HATS-76 b (zoom level 3))

    (Synthetic Spectrum of star HATS-76*)
    *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