Imaginary Picture of WASP-87 A b

Display orbital revolution of WASP-87 A b around the hoststar WASP-87 A
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Exoplanet Name : WASP-87 A b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.3850 (Rjup) 15.5245 (Rearth)
Mass (Mjup / Me): 2.2100 (Mjup) 702.6430 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0295 (AU) 0.0295 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0046
Orbital Period(Observed/Estimated) 1.68 (Days Obs.) 1.68 (Days Est.)
Surface Gravity (G Earth) 2.9154
Star Radiation at Atmospheric Boundary: 6473710.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 2251.3 (K)
Blackbody T 0.3(K) 2114.2 (K)
Blackbody T 0.7(K) 1710.6 (K)
Tidally Locked Blackbody T 0.1(K) 2677.2 (K)
Tidally Locked Blackbody T 0.3(K) 2514.2 (K)
Size Class: Super-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-87 A
Alternate Name :
Star Distance(LY) : 782.8
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 3.8 (GY)
Temperature : 6450 (K)
Spectral type : F5
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.4
Absolute Magnitude: 3.8
Apparent Magnitude: 10.7
Right Ascension(RA) 185.3247
Declination (DEC) -52.8408
Hubble Space Telescope Guide Star Catalog (GSC) ID 08633-00394
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WASP-87&submit=SIMBAD+search
Open Exoplanet Database Link 0
WASP-87 A b
WASP-87 A b

  • WASP-87 A b is an exoplanet orbiting the star WASP-87 A, located about 782.8 light-years (240.0 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star WASP-87 A has apparent magnitude of 10.7, with absolute magnitude of 3.8.
  • It is 1.2 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 6450 with its spectral types of F5
  • In this planetary system, the extrasolar planet WASP-87 A b orbits around the star WASP-87 A every 1.7 days with its orbital distance of 0.03 AU ( 4407153.3 km)
  • (Projected orbit of WASP-87 A b around its host star WASP-87 A)


  • The Star WASP-87 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.466 AU ( 219363867.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.027 AU ( 303218191.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.089 AU ( 462037422.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.545 AU ( 679908307.3 km)
  • Radiation at Planetary Boundary of WASP-87 A b : 6473710.74 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star WASP-87 A)



  • Kopparapu Recent Venus for Star WASP-87 A distance : 1.459 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star WASP-87 A distance : 1.848 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star WASP-87 A distance : 1.785 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star WASP-87 A distance : 1.956 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-87 A distance : 3.218 AU
  • Kopparapu Outer Boundary for Early Mars for Star WASP-87 A distance : 3.394 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star WASP-87 A)



  • Original Kopparapu Recent Venus for Star WASP-87 A distance : 1.483 AU
  • Original Kopparapu Runaway Greenhouse for Star WASP-87 A distance : 1.895 AU
  • Original Kopparapu Moist Greenhouse for Star WASP-87 A distance : 1.962 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-87 A distance : 3.276 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star WASP-87 A distance : 3.407 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star WASP-87 A)



    (Position in Stellar Map of star WASP-87 A and its Exoplanet WASP-87 A b)



    (Zoomed position in Stellar Map of star WASP-87 A and its Exoplanet WASP-87 A b (zoom level 3))

    (Synthetic Spectrum of star WASP-87 A*)
    *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