Imaginary Picture of HAT-P-26 b
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Exoplanet Name : HAT-P-26 b
Alternate Name :
Radius (Rjup / Re): 0.5647 (Rjup) 6.3297 (Rearth)
Mass (Mjup / Me): 0.0585 (Mjup) 18.5994 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0479 (AU) 0.0479 (AU Est.)
Eccentricity : 0.1240
Orbital Period(Yrs) 0.0116
Orbital Period(Observed/Estimated) 4.23 (Days Obs.) 4.24 (Days Est.)
Star Radiation at Atmospheric Boundary: 220850.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 967.5 (K)
Blackbody T 0.3(K) 908.6 (K)
Blackbody T 0.7(K) 735.2 (K)
Tidally Locked Blackbody T 0.1(K) 1150.6 (K)
Tidally Locked Blackbody T 0.3(K) 1080.5 (K)
Size Class: sub-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-26
Alternate Name :
Star Distance(LY) : 437.0
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 9.0 (GY)
Temperature : 5079 (K)
Spectral type : K1
Metalicity : -0.0
Absolute Magnitude: 6.1
Apparent Magnitude: 11.7
Right Ascension(RA) 213.1564
Declination (DEC) 4.0600
Hubble Space Telescope Guide Star Catalog (GSC) ID 00320-01027
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-26+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HAT-P-25%20b/
HAT-P-26 b
HAT-P-26 b

  • HAT-P-26 b is an exoplanet orbiting the star HAT-P-26, located about 437.0 light-years (134.0 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star HAT-P-26 has apparent magnitude of 11.7, with absolute magnitude of 6.1.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5079 with its spectral types of K1
  • In this planetary system, the extrasolar planet HAT-P-26 b orbits around the star HAT-P-26 every 4.2 days with its orbital distance of 0.05 AU ( 7165738.0 km)
  • (Projected orbit of HAT-P-26 b around its host star HAT-P-26)


  • The Star HAT-P-26 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.440 AU ( 65878053.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.609 AU ( 91060685.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.928 AU ( 138756332.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.365 AU ( 204186022.1 km)
  • Radiation at Planetary Boundary of HAT-P-26 b : 220850.85 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HAT-P-26)



  • Kopparapu Recent Venus for Star HAT-P-26 distance : 0.475 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HAT-P-26 distance : 0.601 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HAT-P-26 distance : 0.580 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HAT-P-26 distance : 0.637 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-26 distance : 1.086 AU
  • Kopparapu Outer Boundary for Early Mars for Star HAT-P-26 distance : 1.145 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HAT-P-26)



  • Original Kopparapu Recent Venus for Star HAT-P-26 distance : 0.470 AU
  • Original Kopparapu Runaway Greenhouse for Star HAT-P-26 distance : 0.619 AU
  • Original Kopparapu Moist Greenhouse for Star HAT-P-26 distance : 0.622 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-26 distance : 1.104 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HAT-P-26 distance : 1.148 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HAT-P-26)



    (Position in Stellar Map of star HAT-P-26 and its Exoplanet HAT-P-26 b)



    (Zoomed position in Stellar Map of star HAT-P-26 and its Exoplanet HAT-P-26 b (zoom level 3))