Imaginary Picture of HAT-P-25 b

Display orbital revolution of HAT-P-25 b around the hoststar HAT-P-25
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Exoplanet Name : HAT-P-25 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.1900 (Rjup) 13.3387 (Rearth)
Mass (Mjup / Me): 0.5670 (Mjup) 180.2708 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0466 (AU) 0.0466 (AU Est.)
Eccentricity : 0.0320
Orbital Period(Yrs) 0.0100
Orbital Period(Observed/Estimated) 3.65 (Days Obs.) 3.66 (Days Est.)
Surface Gravity (G Earth) 1.0132
Star Radiation at Atmospheric Boundary: 475248.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1171.9 (K)
Blackbody T 0.3(K) 1100.5 (K)
Blackbody T 0.7(K) 890.4 (K)
Tidally Locked Blackbody T 0.1(K) 1393.6 (K)
Tidally Locked Blackbody T 0.3(K) 1308.7 (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-25
Alternate Name :
Star Distance(LY) : 968.7
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 3.2 (GY)
Temperature : 5500 (K)
Spectral type : G5
UV portion[%]: 6.9
Visible portion[%]: 43.2
IR portion[%]: 49.9
Metalicity : 0.3
Absolute Magnitude: 5.8
Apparent Magnitude: 13.2
Right Ascension(RA) 48.4354
Declination (DEC) 25.1975
Hubble Space Telescope Guide Star Catalog (GSC) ID 01788-01237
Discovered by
Discovery Paper - Authors "S. N. Quinn, G. _. Bakos, J. Hartman, G. Torres, G. Kov_cs, D. W. Latham, R. W. Noyes, D. A. Fischer, J. A. Johnson, G. W. Marcy"
Discovery Paper - Title HAT-P-25b: A HOT-JUPITER TRANSITING A MODERATELY FAINT G STAR
Discovery Paper - Journal "The Astrophysical Journal,olume 745,umber 1"
Discovery Paper - URL http://iopscience.iop.org/article/10.1088/0004-637X/745/1/80/meta
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HAT-P-25+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HAT-P-25%20b/
HAT-P-25 b
HAT-P-25 b

  • HAT-P-25 b is an exoplanet orbiting the star HAT-P-25, located about 968.7 light-years (297.0 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star HAT-P-25 has apparent magnitude of 13.2, with absolute magnitude of 5.8.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5500 with its spectral types of G5
  • In this planetary system, the extrasolar planet HAT-P-25 b orbits around the star HAT-P-25 every 3.7 days with its orbital distance of 0.05 AU ( 6971260.8 km)
  • (Projected orbit of HAT-P-25 b around its host star HAT-P-25)


  • The Star HAT-P-25 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.628 AU ( 94016071.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.869 AU ( 129954779.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.324 AU ( 198022325.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.948 AU ( 291398526.6 km)
  • Radiation at Planetary Boundary of HAT-P-25 b : 475248.71 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HAT-P-25)



  • Kopparapu Recent Venus for Star HAT-P-25 distance : 0.662 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HAT-P-25 distance : 0.838 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HAT-P-25 distance : 0.810 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HAT-P-25 distance : 0.888 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-25 distance : 1.493 AU
  • Kopparapu Outer Boundary for Early Mars for Star HAT-P-25 distance : 1.574 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HAT-P-25)



  • Original Kopparapu Recent Venus for Star HAT-P-25 distance : 0.660 AU
  • Original Kopparapu Runaway Greenhouse for Star HAT-P-25 distance : 0.862 AU
  • Original Kopparapu Moist Greenhouse for Star HAT-P-25 distance : 0.873 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-25 distance : 1.518 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HAT-P-25 distance : 1.579 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HAT-P-25)



    (Position in Stellar Map of star HAT-P-25 and its Exoplanet HAT-P-25 b)



    (Zoomed position in Stellar Map of star HAT-P-25 and its Exoplanet HAT-P-25 b (zoom level 3))

    (Synthetic Spectrum of star HAT-P-25*)
    *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