Imaginary Picture of HAT-P-9 b
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Exoplanet Name : HAT-P-9 b
Alternate Name :
Radius (Rjup / Re): 1.4000 (Rjup) 15.6926 (Rearth)
Mass (Mjup / Me): 0.6700 (Mjup) 213.0185 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0530 (AU) 0.0530 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0107
Orbital Period(Observed/Estimated) 3.92 (Days Obs.) 3.94 (Days Est.)
Star Radiation at Atmospheric Boundary: 1236789.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1488.4 (K)
Blackbody T 0.3(K) 1397.8 (K)
Blackbody T 0.7(K) 1130.9 (K)
Tidally Locked Blackbody T 0.1(K) 1770.0 (K)
Tidally Locked Blackbody T 0.3(K) 1662.2 (K)
Size Class: Super-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-9
Alternate Name :
Star Distance(LY) : 1565.5
Stellar Radius(Rsun) : 1.3 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 1.6 (GY)
Temperature : 6350 (K)
Spectral type : F
Metalicity : 0.1
Absolute Magnitude: 2.9
Apparent Magnitude: 11.3
Right Ascension(RA) 110.1687
Declination (DEC) 37.1406
Hubble Space Telescope Guide Star Catalog (GSC) ID 02463-00281
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HAT-P-9+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HAT-P-9%20b/
HAT-P-9 b
HAT-P-9 b

  • HAT-P-9 b is an exoplanet orbiting the star HAT-P-9, located about 1565.5 light-years (480.0 pc) away from Solar System. Its discovery was publicly announced on 2008.
  • The host star HAT-P-9 has apparent magnitude of 11.3, with absolute magnitude of 2.9.
  • It is 1.3 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 6350 with its spectral types of F
  • In this planetary system, the extrasolar planet HAT-P-9 b orbits around the star HAT-P-9 every 3.9 days with its orbital distance of 0.05 AU ( 7928687.1 km)
  • (Projected orbit of HAT-P-9 b around its host star HAT-P-9)


  • The Star HAT-P-9 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.153 AU ( 172496184.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.594 AU ( 238434806.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.429 AU ( 363321879.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.574 AU ( 534644061.2 km)
  • Radiation at Planetary Boundary of HAT-P-9 b : 1236789.63 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HAT-P-9)



  • Kopparapu Recent Venus for Star HAT-P-9 distance : 1.154 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HAT-P-9 distance : 1.462 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HAT-P-9 distance : 1.412 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HAT-P-9 distance : 1.547 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-9 distance : 2.549 AU
  • Kopparapu Outer Boundary for Early Mars for Star HAT-P-9 distance : 2.689 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HAT-P-9)



  • Original Kopparapu Recent Venus for Star HAT-P-9 distance : 1.170 AU
  • Original Kopparapu Runaway Greenhouse for Star HAT-P-9 distance : 1.499 AU
  • Original Kopparapu Moist Greenhouse for Star HAT-P-9 distance : 1.548 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-9 distance : 2.595 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HAT-P-9 distance : 2.699 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HAT-P-9)



    (Position in Stellar Map of star HAT-P-9 and its Exoplanet HAT-P-9 b)



    (Zoomed position in Stellar Map of star HAT-P-9 and its Exoplanet HAT-P-9 b (zoom level 3))