Imaginary Picture of HAT-P-17 c
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Exoplanet Name : HAT-P-17 c
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 1.4000 (Mjup) 445.1132 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.7500 (AU) 2.7500 (AU Est.)
Eccentricity : 0.1000
Orbital Period(Yrs) 4.9225
Orbital Period(Observed/Estimated) 1798.00 (Days Obs.) 1799.28 (Days Est.)
Star Radiation at Atmospheric Boundary: 86.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 135.9 (K)
Blackbody T 0.3(K) 127.7 (K)
Blackbody T 0.7(K) 103.3 (K)
Tidally Locked Blackbody T 0.1(K) 161.7 (K)
Tidally Locked Blackbody T 0.3(K) 151.8 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HAT-P-17
Alternate Name :
Star Distance(LY) : 300.6
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 7.8 (GY)
Temperature : 5246 (K)
Spectral type : K
Metalicity : 0.0
Absolute Magnitude: 5.7
Apparent Magnitude: 10.5
Right Ascension(RA) 324.5364
Declination (DEC) 30.4886
Hubble Space Telescope Guide Star Catalog (GSC) ID 02717-00417
Discovered by
Discovery Paper - Authors "A. W. Howard, G. _. Bakos, J. Hartman, G. Torres, A. Shporer, T. Mazeh, G_za Kov_cs, D. W. Latham, R. W. Noyes, D. A. Fischer"
Discovery Paper - Title "HAT-P-17b,c: A TRANSITING, ECCENTRIC, HOT SATURN AND A LONG-PERIOD, COLD JUPITER*"
Discovery Paper - Journal "The Astrophysical Journal, Volume 749, Number 2"
Discovery Paper - URL http://iopscience.iop.org/article/10.1088/0004-637X/749/2/134/meta
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HAT-P-17+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HAT-P-17%20c/
HAT-P-17 c
HAT-P-17 c

  • HAT-P-17 c is an exoplanet orbiting the star HAT-P-17, located about 300.6 light-years (92.2 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star HAT-P-17 has apparent magnitude of 10.5, with absolute magnitude of 5.7.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5246 with its spectral types of K
  • In this planetary system, the extrasolar planet HAT-P-17 c orbits around the star HAT-P-17 every 1798.0 days with its orbital distance of 2.75 AU ( 411394144.4 km)
  • (Projected orbit of HAT-P-17 c around its host star HAT-P-17)


  • The Star HAT-P-17 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.499 AU ( 74651775.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.690 AU ( 103188263.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.051 AU ( 157236077.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.547 AU ( 231379775.7 km)
  • Radiation at Planetary Boundary of HAT-P-17 c : 86.04 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HAT-P-17)



  • Kopparapu Recent Venus for Star HAT-P-17 distance : 0.533 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HAT-P-17 distance : 0.675 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HAT-P-17 distance : 0.652 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HAT-P-17 distance : 0.715 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-17 distance : 1.212 AU
  • Kopparapu Outer Boundary for Early Mars for Star HAT-P-17 distance : 1.279 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HAT-P-17)



  • Original Kopparapu Recent Venus for Star HAT-P-17 distance : 0.529 AU
  • Original Kopparapu Runaway Greenhouse for Star HAT-P-17 distance : 0.695 AU
  • Original Kopparapu Moist Greenhouse for Star HAT-P-17 distance : 0.700 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-17 distance : 1.233 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HAT-P-17 distance : 1.282 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HAT-P-17)



    (Position in Stellar Map of star HAT-P-17 and its Exoplanet HAT-P-17 c)



    (Zoomed position in Stellar Map of star HAT-P-17 and its Exoplanet HAT-P-17 c (zoom level 3))