Imaginary Picture of HAT-P-4 b
/
Exoplanet Name : HAT-P-4 b
Alternate Name :
Radius (Rjup / Re): 1.2700 (Rjup) 14.2354 (Rearth)
Mass (Mjup / Me): 0.6800 (Mjup) 216.1978 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0446 (AU) 0.0446 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0084
Orbital Period(Observed/Estimated) 3.06 (Days Obs.) 3.06 (Days Est.)
Star Radiation at Atmospheric Boundary: 1875817.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1651.7 (K)
Blackbody T 0.3(K) 1551.2 (K)
Blackbody T 0.7(K) 1255.0 (K)
Tidally Locked Blackbody T 0.1(K) 1964.3 (K)
Tidally Locked Blackbody T 0.3(K) 1844.6 (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-4
Alternate Name :
Star Distance(LY) : 1011.1
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 4.2 (GY)
Temperature : 5890 (K)
Spectral type : F
Metalicity : 0.2
Absolute Magnitude: 3.7
Apparent Magnitude: 11.2
Right Ascension(RA) 229.9914
Declination (DEC) 36.2297
Hubble Space Telescope Guide Star Catalog (GSC) ID 02569-01599
Discovered by
Discovery Paper - Authors "D. M. Wilson, M. Gillon, C. Hellier, P. F. L. Maxted, F. Pepe, D. Queloz, D. R. Anderson, A. Collier Cameron, B. Smalley, T. A. Lister"
Discovery Paper - Title WASP-4b: A 12th Magnitude Transiting Hot Jupiter in the Southern Hemisphere
Discovery Paper - Journal "The Astrophysical Journal Letters,olume 675,umber 2"
Discovery Paper - URL http://iopscience.iop.org/article/10.1086/586735/meta
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HAT-P-4+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HAT-P-4%20b/
HAT-P-4 b
HAT-P-4 b

  • HAT-P-4 b is an exoplanet orbiting the star HAT-P-4, located about 1011.1 light-years (310.0 pc) away from Solar System. Its discovery was publicly announced on 2007.
  • The host star HAT-P-4 has apparent magnitude of 11.2, with absolute magnitude of 3.7.
  • It is 1.3 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 5890 with its spectral types of F
  • In this planetary system, the extrasolar planet HAT-P-4 b orbits around the star HAT-P-4 every 3.1 days with its orbital distance of 0.04 AU ( 6672065.0 km)
  • (Projected orbit of HAT-P-4 b around its host star HAT-P-4)


  • The Star HAT-P-4 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.195 AU ( 178766372.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.652 AU ( 247101843.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.517 AU ( 376528525.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.704 AU ( 554078220.2 km)
  • Radiation at Planetary Boundary of HAT-P-4 b : 1875817.23 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HAT-P-4)



  • Kopparapu Recent Venus for Star HAT-P-4 distance : 1.230 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HAT-P-4 distance : 1.558 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HAT-P-4 distance : 1.505 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HAT-P-4 distance : 1.649 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-4 distance : 2.743 AU
  • Kopparapu Outer Boundary for Early Mars for Star HAT-P-4 distance : 2.893 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HAT-P-4)



  • Original Kopparapu Recent Venus for Star HAT-P-4 distance : 1.235 AU
  • Original Kopparapu Runaway Greenhouse for Star HAT-P-4 distance : 1.600 AU
  • Original Kopparapu Moist Greenhouse for Star HAT-P-4 distance : 1.634 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-4 distance : 2.792 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HAT-P-4 distance : 2.903 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HAT-P-4)



    (Position in Stellar Map of star HAT-P-4 and its Exoplanet HAT-P-4 b)



    (Zoomed position in Stellar Map of star HAT-P-4 and its Exoplanet HAT-P-4 b (zoom level 3))