Imaginary Picture of WASP-123 b

Display orbital revolution of WASP-123 b around the hoststar WASP-123
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Exoplanet Name : WASP-123 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.3270 (Rjup) 14.8743 (Rearth)
Mass (Mjup / Me): 0.9200 (Mjup) 292.5030 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0431 (AU) 0.0431 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0082
Orbital Period(Observed/Estimated) 2.98 (Days Obs.) 2.97 (Days Est.)
Surface Gravity (G Earth) 1.3221
Star Radiation at Atmospheric Boundary: 1195305.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1475.7 (K)
Blackbody T 0.3(K) 1385.9 (K)
Blackbody T 0.7(K) 1121.3 (K)
Tidally Locked Blackbody T 0.1(K) 1755.0 (K)
Tidally Locked Blackbody T 0.3(K) 1648.1 (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-123
Alternate Name :
Star Distance(LY) : 623.6
Stellar Radius(Rsun) : 1.3 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5730 (K)
Spectral type : G5
UV portion[%]: 7.7
Visible portion[%]: 44.5
IR portion[%]: 47.7
Metalicity : 0.2
Absolute Magnitude: 4.7
Apparent Magnitude: 11.1
Right Ascension(RA) 289.4792
Declination (DEC) -32.8600
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "O.D.Turner, D. R. Anderson, A. Collier Cameron, L. Delrez, M. Gillon, C. Hellier, E. Jehin, M. Lendl, P. F. L. Maxted, F. Pepe, D. Pollacco, D. Queloz, D. S_gransan, B. Smalley, A. M. S. Smith, A. H. M.J. Triaud, S. Udry, R. G. West"
Discovery Paper - Title "WASP-120b, WASP-122b and WASP-123b: Three newly discovered planets from the WASP-South survey"
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WASP-123&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/WASP-123%20b/
WASP-123 b
WASP-123 b

  • WASP-123 b is an exoplanet orbiting the star WASP-123, located about 623.6 light-years (191.2 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star WASP-123 has apparent magnitude of 11.1, with absolute magnitude of 4.7.
  • It is 1.2 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 5730 with its spectral types of G5
  • In this planetary system, the extrasolar planet WASP-123 b orbits around the star WASP-123 every 3.0 days with its orbital distance of 0.04 AU ( 6447668.2 km)
  • (Projected orbit of WASP-123 b around its host star WASP-123)


  • The Star WASP-123 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.922 AU ( 137902569.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.274 AU ( 190617389.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.942 AU ( 290458717.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.857 AU ( 427422727.0 km)
  • Radiation at Planetary Boundary of WASP-123 b : 1195305.07 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star WASP-123)



  • Kopparapu Recent Venus for Star WASP-123 distance : 0.958 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star WASP-123 distance : 1.213 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star WASP-123 distance : 1.172 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star WASP-123 distance : 1.285 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-123 distance : 2.145 AU
  • Kopparapu Outer Boundary for Early Mars for Star WASP-123 distance : 2.263 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star WASP-123)



  • Original Kopparapu Recent Venus for Star WASP-123 distance : 0.959 AU
  • Original Kopparapu Runaway Greenhouse for Star WASP-123 distance : 1.247 AU
  • Original Kopparapu Moist Greenhouse for Star WASP-123 distance : 1.268 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-123 distance : 2.183 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star WASP-123 distance : 2.270 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star WASP-123)



    (Position in Stellar Map of star WASP-123 and its Exoplanet WASP-123 b)



    (Zoomed position in Stellar Map of star WASP-123 and its Exoplanet WASP-123 b (zoom level 3))

    (Synthetic Spectrum of star WASP-123*)
    *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