Imaginary Picture of HAT-P-64 b

Display orbital revolution of HAT-P-64 b around the hoststar HAT-P-64
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Exoplanet Name : HAT-P-64 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.7030 (Rjup) 19.0889 (Rearth)
Mass (Mjup / Me): 0.5800 (Mjup) 184.4040 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0539 (AU) 0.0539 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0110
Orbital Period(Observed/Estimated) 4.01 (Days Obs.) 4.01 (Days Est.)
Surface Gravity (G Earth) 0.5061
Star Radiation at Atmospheric Boundary: 2211225.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1721.1 (K)
Blackbody T 0.3(K) 1616.3 (K)
Blackbody T 0.7(K) 1307.7 (K)
Tidally Locked Blackbody T 0.1(K) 2046.7 (K)
Tidally Locked Blackbody T 0.3(K) 1922.1 (K)
Size Class: Super-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-64
Alternate Name :
Star Distance(LY) : 2071.1
Stellar Radius(Rsun) : 1.7 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 2.9 (GY)
Temperature : 6457 (K)
Spectral type : F7
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.1
Absolute Magnitude: 3.8
Apparent Magnitude: 12.8
Right Ascension(RA) 68.9750
Declination (DEC) 2.4314
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-64 b
HAT-P-64 b

  • HAT-P-64 b is an exoplanet orbiting the star HAT-P-64, located about 2071.1 light-years (635.0 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star HAT-P-64 has apparent magnitude of 12.8, with absolute magnitude of 3.8.
  • It is 1.3 times more massive and 1.7 times bigger compared with our Sun. The surface temperature is 6457 with its spectral types of F7
  • In this planetary system, the extrasolar planet HAT-P-64 b orbits around the star HAT-P-64 every 4.0 days with its orbital distance of 0.05 AU ( 8058837.3 km)
  • (Projected orbit of HAT-P-64 b around its host star HAT-P-64)


  • The Star HAT-P-64 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.567 AU ( 234433226.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.166 AU ( 324047983.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.301 AU ( 493777415.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.857 AU ( 726615097.4 km)
  • Radiation at Planetary Boundary of HAT-P-64 b : 2211225.14 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HAT-P-64)



  • Kopparapu Recent Venus for Star HAT-P-64 distance : 1.559 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HAT-P-64 distance : 1.974 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HAT-P-64 distance : 1.907 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HAT-P-64 distance : 2.089 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-64 distance : 3.437 AU
  • Kopparapu Outer Boundary for Early Mars for Star HAT-P-64 distance : 3.625 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HAT-P-64)



  • Original Kopparapu Recent Venus for Star HAT-P-64 distance : 1.584 AU
  • Original Kopparapu Runaway Greenhouse for Star HAT-P-64 distance : 2.024 AU
  • Original Kopparapu Moist Greenhouse for Star HAT-P-64 distance : 2.096 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-64 distance : 3.499 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HAT-P-64 distance : 3.639 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HAT-P-64)



    (Position in Stellar Map of star HAT-P-64 and its Exoplanet HAT-P-64 b)



    (Zoomed position in Stellar Map of star HAT-P-64 and its Exoplanet HAT-P-64 b (zoom level 3))

    (Synthetic Spectrum of star HAT-P-64*)
    *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