Imaginary Picture of HAT-P-22 b

Display orbital revolution of HAT-P-22 b around the hoststar HAT-P-22
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Exoplanet Name : HAT-P-22 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.0800 (Rjup) 12.1057 (Rearth)
Mass (Mjup / Me): 2.1470 (Mjup) 682.6129 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0414 (AU) 0.0414 (AU Est.)
Eccentricity : 0.0160
Orbital Period(Yrs) 0.0088
Orbital Period(Observed/Estimated) 3.21 (Days Obs.) 3.21 (Days Est.)
Surface Gravity (G Earth) 4.6579
Star Radiation at Atmospheric Boundary: 611546.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1248.1 (K)
Blackbody T 0.3(K) 1172.1 (K)
Blackbody T 0.7(K) 948.4 (K)
Tidally Locked Blackbody T 0.1(K) 1484.3 (K)
Tidally Locked Blackbody T 0.3(K) 1393.9 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HAT-P-22
Alternate Name :
Star Distance(LY) : 274.3
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 12.4 (GY)
Temperature : 5302 (K)
Spectral type : G5
UV portion[%]: 5.8
Visible portion[%]: 41.4
IR portion[%]: 52.7
Metalicity : 0.2
Absolute Magnitude: 5.1
Apparent Magnitude: 9.7
Right Ascension(RA) 155.6816
Declination (DEC) 50.1283
Hubble Space Telescope Guide Star Catalog (GSC) ID 03441-00925
Discovered by
Discovery Paper - Authors HOG E.; FABRICIUS C.; MAKAROV V.V.; URBAN S.; CORBIN T.; WYCOFF G.; BASTIAN U.; SCHWEKENDIEK P.; WICENEC A.
Discovery Paper - Title The Tycho-2 catalogue of the 2.5 million brightest stars.
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HAT-P-22+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HAT-P-22%20b/
HAT-P-22 b
HAT-P-22 b

  • HAT-P-22 b is an exoplanet orbiting the star HAT-P-22, located about 274.3 light-years (84.1 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star HAT-P-22 has apparent magnitude of 9.7, with absolute magnitude of 5.1.
  • It is 0.9 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5302 with its spectral types of G5
  • In this planetary system, the extrasolar planet HAT-P-22 b orbits around the star HAT-P-22 every 3.2 days with its orbital distance of 0.04 AU ( 6193351.8 km)
  • (Projected orbit of HAT-P-22 b around its host star HAT-P-22)


  • The Star HAT-P-22 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.633 AU ( 94748184.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.875 AU ( 130966752.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.334 AU ( 199564347.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.963 AU ( 293667679.4 km)
  • Radiation at Planetary Boundary of HAT-P-22 b : 611546.80 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HAT-P-22)



  • Kopparapu Recent Venus for Star HAT-P-22 distance : 0.675 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HAT-P-22 distance : 0.854 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HAT-P-22 distance : 0.825 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HAT-P-22 distance : 0.905 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-22 distance : 1.531 AU
  • Kopparapu Outer Boundary for Early Mars for Star HAT-P-22 distance : 1.615 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HAT-P-22)



  • Original Kopparapu Recent Venus for Star HAT-P-22 distance : 0.670 AU
  • Original Kopparapu Runaway Greenhouse for Star HAT-P-22 distance : 0.879 AU
  • Original Kopparapu Moist Greenhouse for Star HAT-P-22 distance : 0.887 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-22 distance : 1.557 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HAT-P-22 distance : 1.619 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HAT-P-22)



    (Position in Stellar Map of star HAT-P-22 and its Exoplanet HAT-P-22 b)



    (Zoomed position in Stellar Map of star HAT-P-22 and its Exoplanet HAT-P-22 b (zoom level 3))

    (Synthetic Spectrum of star HAT-P-22*)
    *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