Imaginary Picture of WASP-147 b

Display orbital revolution of WASP-147 b around the hoststar WASP-147
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Exoplanet Name : WASP-147 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.1150 (Rjup) 12.4980 (Rearth)
Mass (Mjup / Me): 0.2750 (Mjup) 87.4330 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0549 (AU) 0.0549 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0126
Orbital Period(Observed/Estimated) 4.60 (Days Obs.) 4.60 (Days Est.)
Surface Gravity (G Earth) 0.5597
Star Radiation at Atmospheric Boundary: 878280.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1366.3 (K)
Blackbody T 0.3(K) 1283.1 (K)
Blackbody T 0.7(K) 1038.2 (K)
Tidally Locked Blackbody T 0.1(K) 1624.8 (K)
Tidally Locked Blackbody T 0.3(K) 1525.9 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : WASP-147
Alternate Name :
Star Distance(LY) : 1389.4
Stellar Radius(Rsun) : 1.4 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 8.5 (GY)
Temperature : 5702 (K)
Spectral type : G4
UV portion[%]: 7.6
Visible portion[%]: 44.4
IR portion[%]: 48.0
Metalicity : 0.1
Absolute Magnitude: 4.2
Apparent Magnitude: 12.3
Right Ascension(RA) 359.1915
Declination (DEC) -22.1532
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
WASP-147 b
WASP-147 b

  • WASP-147 b is an exoplanet orbiting the star WASP-147, located about 1389.4 light-years (426.0 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star WASP-147 has apparent magnitude of 12.3, with absolute magnitude of 4.2.
  • It is 1.0 times more massive and 1.4 times bigger compared with our Sun. The surface temperature is 5702 with its spectral types of G4
  • In this planetary system, the extrasolar planet WASP-147 b orbits around the star WASP-147 every 4.6 days with its orbital distance of 0.05 AU ( 8212923.1 km)
  • (Projected orbit of WASP-147 b around its host star WASP-147)


  • The Star WASP-147 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.007 AU ( 150572190.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.391 AU ( 208130115.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.120 AU ( 317144237.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.120 AU ( 466691638.7 km)
  • Radiation at Planetary Boundary of WASP-147 b : 878280.89 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star WASP-147)



  • Kopparapu Recent Venus for Star WASP-147 distance : 1.048 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star WASP-147 distance : 1.327 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star WASP-147 distance : 1.282 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star WASP-147 distance : 1.405 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-147 distance : 2.348 AU
  • Kopparapu Outer Boundary for Early Mars for Star WASP-147 distance : 2.477 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star WASP-147)



  • Original Kopparapu Recent Venus for Star WASP-147 distance : 1.048 AU
  • Original Kopparapu Runaway Greenhouse for Star WASP-147 distance : 1.364 AU
  • Original Kopparapu Moist Greenhouse for Star WASP-147 distance : 1.386 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-147 distance : 2.389 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star WASP-147 distance : 2.485 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star WASP-147)



    (Position in Stellar Map of star WASP-147 and its Exoplanet WASP-147 b)



    (Zoomed position in Stellar Map of star WASP-147 and its Exoplanet WASP-147 b (zoom level 3))

    (Synthetic Spectrum of star WASP-147*)
    *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