Imaginary Picture of WASP-33 b

Display orbital revolution of WASP-33 b around the hoststar WASP-33
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Exoplanet Name : WASP-33 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.6030 (Rjup) 17.9680 (Rearth)
Mass (Mjup / Me): 2.8000 (Mjup) 890.2264 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0256 (AU) 0.0256 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0033
Orbital Period(Observed/Estimated) 1.22 (Days Obs.) 1.22 (Days Est.)
Surface Gravity (G Earth) 2.7574
Star Radiation at Atmospheric Boundary: 11718310.3 (W/m2)
Measured Temperature (K) 2815.0 (K)
Blackbody T 0.1(K) 2611.3 (K)
Blackbody T 0.3(K) 2452.3 (K)
Blackbody T 0.7(K) 1984.2 (K)
Tidally Locked Blackbody T 0.1(K) 3105.4 (K)
Tidally Locked Blackbody T 0.3(K) 2916.3 (K)
Size Class: Super-Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Timing
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : WASP-33
Alternate Name :
Star Distance(LY) : 383.3
Stellar Radius(Rsun) : 1.4 (Rsun Measured)
Stellar Mass(Msun) : 1.5 (Msun Measured) 1.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 7400 (K)
Spectral type : A5
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.1
Absolute Magnitude: 2.9
Apparent Magnitude: 8.3
Right Ascension(RA) 36.7127
Declination (DEC) 37.5506
Hubble Space Telescope Guide Star Catalog (GSC) ID 02831-00594
Discovered by
Discovery Paper - Authors CUTRI R.M et al.
Discovery Paper - Title 2MASS All Sky Catalog of point sources.
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WASP-33+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/WASP-33%20b/
WASP-33 b
WASP-33 b

  • WASP-33 b is an exoplanet orbiting the star WASP-33, located about 383.3 light-years (117.5 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star WASP-33 has apparent magnitude of 8.3, with absolute magnitude of 2.9.
  • It is 1.5 times more massive and 1.4 times bigger compared with our Sun. The surface temperature is 7400 with its spectral types of A5
  • In this planetary system, the extrasolar planet WASP-33 b orbits around the star WASP-33 every 1.2 days with its orbital distance of 0.03 AU ( 3826713.5 km)
  • (Projected orbit of WASP-33 b around its host star WASP-33)


  • The Star WASP-33 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.713 AU ( 256264675.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.368 AU ( 354224751.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.608 AU ( 539760131.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.309 AU ( 794280678.3 km)
  • Radiation at Planetary Boundary of WASP-33 b : 11718310.35 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star WASP-33)



  • Kopparapu Recent Venus for Star WASP-33 distance : 1.629 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star WASP-33 distance : 2.063 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star WASP-33 distance : 1.992 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star WASP-33 distance : 2.181 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-33 distance : 3.559 AU
  • Kopparapu Outer Boundary for Early Mars for Star WASP-33 distance : 3.753 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star WASP-33)



  • Original Kopparapu Recent Venus for Star WASP-33 distance : 1.685 AU
  • Original Kopparapu Runaway Greenhouse for Star WASP-33 distance : 2.109 AU
  • Original Kopparapu Moist Greenhouse for Star WASP-33 distance : 2.230 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-33 distance : 3.624 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star WASP-33 distance : 3.768 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star WASP-33)



    (Position in Stellar Map of star WASP-33 and its Exoplanet WASP-33 b)



    (Zoomed position in Stellar Map of star WASP-33 and its Exoplanet WASP-33 b (zoom level 3))

    (Synthetic Spectrum of star WASP-33*)
    *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