Imaginary Picture of HATS-37A b
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Exoplanet Name : HATS-37A b
Alternate Name :
Radius (Rjup / Re): 0.6060 (Rjup) 6.7927 (Rearth)
Mass (Mjup / Me): 0.0990 (Mjup) 31.4759 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0491 (AU) 0.0491 (AU Est.)
Eccentricity : 0.3450
Orbital Period(Yrs) 0.0119
Orbital Period(Observed/Estimated) 4.33 (Days Obs.) 4.33 (Days Est.)
Star Radiation at Atmospheric Boundary: 314423.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1056.9 (K)
Blackbody T 0.3(K) 992.5 (K)
Blackbody T 0.7(K) 803.0 (K)
Tidally Locked Blackbody T 0.1(K) 1256.8 (K)
Tidally Locked Blackbody T 0.3(K) 1180.3 (K)
Size Class: sub-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-37A
Alternate Name :
Star Distance(LY) : 688.5
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 11.5 (GY)
Temperature : 5326 (K)
Spectral type : K0
Metalicity : 0.1
Absolute Magnitude: 5.6
Apparent Magnitude: 12.3
Right Ascension(RA) 199.8000
Declination (DEC) -22.9869
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-37A b
HATS-37A b

  • HATS-37A b is an exoplanet orbiting the star HATS-37A, located about 688.5 light-years (211.1 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star HATS-37A has apparent magnitude of 12.3, with absolute magnitude of 5.6.
  • It is 0.8 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5326 with its spectral types of K0
  • In this planetary system, the extrasolar planet HATS-37A b orbits around the star HATS-37A every 4.3 days with its orbital distance of 0.05 AU ( 7349743.4 km)
  • (Projected orbit of HATS-37A b around its host star HATS-37A)


  • The Star HATS-37A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.539 AU ( 80623199.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.745 AU ( 111442331.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.135 AU ( 169813450.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.670 AU ( 249887932.0 km)
  • Radiation at Planetary Boundary of HATS-37A b : 314423.59 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HATS-37A)



  • Kopparapu Recent Venus for Star HATS-37A distance : 0.573 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HATS-37A distance : 0.726 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HATS-37A distance : 0.701 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HATS-37A distance : 0.769 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-37A distance : 1.300 AU
  • Kopparapu Outer Boundary for Early Mars for Star HATS-37A distance : 1.371 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HATS-37A)



  • Original Kopparapu Recent Venus for Star HATS-37A distance : 0.570 AU
  • Original Kopparapu Runaway Greenhouse for Star HATS-37A distance : 0.747 AU
  • Original Kopparapu Moist Greenhouse for Star HATS-37A distance : 0.754 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-37A distance : 1.322 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HATS-37A distance : 1.375 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HATS-37A)



    (Position in Stellar Map of star HATS-37A and its Exoplanet HATS-37A b)



    (Zoomed position in Stellar Map of star HATS-37A and its Exoplanet HATS-37A b (zoom level 3))