Imaginary Picture of HATS-71A b

Display orbital revolution of HATS-71A b around the hoststar HATS-71A
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Exoplanet Name : HATS-71A b
Alternate Name :
Radius (Rjup / Re): 1.0800 (Rjup) 12.1057 (Rearth)
Mass (Mjup / Me): 0.4500 (Mjup) 143.0721 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0395 (AU) 0.0395 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0104
Orbital Period(Observed/Estimated) 3.80 (Days Obs.) 3.80 (Days Est.)
Surface Gravity (G Earth) 0.9763
Star Radiation at Atmospheric Boundary: 23519.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 552.7 (K)
Blackbody T 0.3(K) 519.1 (K)
Blackbody T 0.7(K) 420.0 (K)
Tidally Locked Blackbody T 0.1(K) 657.3 (K)
Tidally Locked Blackbody T 0.3(K) 617.3 (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-71A
Alternate Name :
Star Distance(LY) : 458.8
Stellar Radius(Rsun) : 0.5 (Rsun Measured)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3254 (K)
Spectral type : M3
UV portion[%]: 0.2
Visible portion[%]: 9.2
IR portion[%]: 90.6
Metalicity : 0.2
Absolute Magnitude: 5.3
Apparent Magnitude: 11.0
Right Ascension(RA) 15.5500
Declination (DEC) -61.7561
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
HATS-71A b
HATS-71A b

  • HATS-71A b is an exoplanet orbiting the star HATS-71A, located about 458.8 light-years (140.7 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star HATS-71A has apparent magnitude of 11.0, with absolute magnitude of 5.3.
  • It is 0.6 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3254 with its spectral types of M3
  • In this planetary system, the extrasolar planet HATS-71A b orbits around the star HATS-71A every 3.8 days with its orbital distance of 0.04 AU ( 5903132.0 km)
  • (Projected orbit of HATS-71A b around its host star HATS-71A)


  • The Star HATS-71A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.118 AU ( 17710346.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.164 AU ( 24480327.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.249 AU ( 37302602.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.367 AU ( 54892412.9 km)
  • Radiation at Planetary Boundary of HATS-71A b : 23519.53 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HATS-71A)



  • Kopparapu Recent Venus for Star HATS-71A distance : 0.134 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HATS-71A distance : 0.170 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HATS-71A distance : 0.164 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HATS-71A distance : 0.180 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-71A distance : 0.334 AU
  • Kopparapu Outer Boundary for Early Mars for Star HATS-71A distance : 0.353 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HATS-71A)



  • Original Kopparapu Recent Venus for Star HATS-71A distance : 0.133 AU
  • Original Kopparapu Runaway Greenhouse for Star HATS-71A distance : 0.176 AU
  • Original Kopparapu Moist Greenhouse for Star HATS-71A distance : 0.176 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-71A distance : 0.340 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HATS-71A distance : 0.353 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HATS-71A)



    (Position in Stellar Map of star HATS-71A and its Exoplanet HATS-71A b)



    (Zoomed position in Stellar Map of star HATS-71A and its Exoplanet HATS-71A b (zoom level 3))

    (Synthetic Spectrum of star HATS-71A*)
    *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