Imaginary Picture of HAT-P-61 b
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Exoplanet Name : HAT-P-61 b
Alternate Name :
Radius (Rjup / Re): 0.8990 (Rjup) 10.0769 (Rearth)
Mass (Mjup / Me): 1.0570 (Mjup) 336.0605 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0301 (AU) 0.0301 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0052
Orbital Period(Observed/Estimated) 1.90 (Days Obs.) 1.90 (Days Est.)
Star Radiation at Atmospheric Boundary: 1160358.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1464.8 (K)
Blackbody T 0.3(K) 1375.6 (K)
Blackbody T 0.7(K) 1113.0 (K)
Tidally Locked Blackbody T 0.1(K) 1742.0 (K)
Tidally Locked Blackbody T 0.3(K) 1635.9 (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 : HAT-P-61
Alternate Name :
Star Distance(LY) : 1119.4
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 2.6 (GY)
Temperature : 5587 (K)
Spectral type : G6
Metalicity : 0.2
Absolute Magnitude: 5.5
Apparent Magnitude: 13.2
Right Ascension(RA) 75.4792
Declination (DEC) 50.1314
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
HAT-P-61 b
HAT-P-61 b

  • HAT-P-61 b is an exoplanet orbiting the star HAT-P-61, located about 1119.4 light-years (343.2 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star HAT-P-61 has apparent magnitude of 13.2, with absolute magnitude of 5.5.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5587 with its spectral types of G6
  • In this planetary system, the extrasolar planet HAT-P-61 b orbits around the star HAT-P-61 every 1.9 days with its orbital distance of 0.03 AU ( 4502895.9 km)
  • (Projected orbit of HAT-P-61 b around its host star HAT-P-61)


  • The Star HAT-P-61 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.634 AU ( 94889529.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.877 AU ( 131162127.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.336 AU ( 199862056.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.966 AU ( 294105771.0 km)
  • Radiation at Planetary Boundary of HAT-P-61 b : 1160358.48 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HAT-P-61)



  • Kopparapu Recent Venus for Star HAT-P-61 distance : 0.665 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HAT-P-61 distance : 0.842 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HAT-P-61 distance : 0.813 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HAT-P-61 distance : 0.892 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-61 distance : 1.495 AU
  • Kopparapu Outer Boundary for Early Mars for Star HAT-P-61 distance : 1.577 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HAT-P-61)



  • Original Kopparapu Recent Venus for Star HAT-P-61 distance : 0.663 AU
  • Original Kopparapu Runaway Greenhouse for Star HAT-P-61 distance : 0.866 AU
  • Original Kopparapu Moist Greenhouse for Star HAT-P-61 distance : 0.878 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-61 distance : 1.521 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HAT-P-61 distance : 1.582 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HAT-P-61)



    (Position in Stellar Map of star HAT-P-61 and its Exoplanet HAT-P-61 b)



    (Zoomed position in Stellar Map of star HAT-P-61 and its Exoplanet HAT-P-61 b (zoom level 3))