Imaginary Picture of SW Sex b

Display orbital revolution of SW Sex b around the hoststar SW Sex
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Exoplanet Name : SW Sex b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 14.0000 (Mjup) 4451.1320 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 10.6468 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 36.5685
Orbital Period(Observed/Estimated) 13357.00 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 42.9861
Star Radiation at Atmospheric Boundary: 0.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 31.3 (K)
Blackbody T 0.3(K) 29.4 (K)
Blackbody T 0.7(K) 23.8 (K)
Tidally Locked Blackbody T 0.1(K) 37.2 (K)
Tidally Locked Blackbody T 0.3(K) 34.9 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Timing
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : SW Sex
Alternate Name :
Star Distance(LY) : 2025.9
Stellar Radius(Rsun) : 0.4 (Rsun Estimated)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3300 (K)
Spectral type : M9
UV portion[%]: 0.2
Visible portion[%]: 11.2
IR portion[%]: 88.6
Metalicity : 0.0
Absolute Magnitude: 5.0
Apparent Magnitude: 14.0
Right Ascension(RA) 153.7890
Declination (DEC) -3.1425
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=SW+Sex+&submit=SIMBAD+search
Open Exoplanet Database Link
SW Sex b
SW Sex b

  • SW Sex b is an exoplanet orbiting the star SW Sex, located about 2025.9 light-years (621.2 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star SW Sex has apparent magnitude of 14.0, with absolute magnitude of 5.0.
  • It is 0.9 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3300 with its spectral types of M9
  • In this planetary system, the extrasolar planet SW Sex b orbits around the star SW Sex every 13357.0 days with its orbital distance of 10.65 AU ( 1592734438.4 km)
  • (Projected orbit of SW Sex b around its host star SW Sex)


  • The Star SW Sex 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.102 AU ( 15301294.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.141 AU ( 21150388.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.215 AU ( 32228511.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.317 AU ( 47425666.0 km)
  • Radiation at Planetary Boundary of SW Sex b : 0.24 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star SW Sex)



  • Kopparapu Recent Venus for Star SW Sex distance : 0.116 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star SW Sex distance : 0.147 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star SW Sex distance : 0.142 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star SW Sex distance : 0.156 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star SW Sex distance : 0.288 AU
  • Kopparapu Outer Boundary for Early Mars for Star SW Sex distance : 0.304 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star SW Sex)



  • Original Kopparapu Recent Venus for Star SW Sex distance : 0.115 AU
  • Original Kopparapu Runaway Greenhouse for Star SW Sex distance : 0.152 AU
  • Original Kopparapu Moist Greenhouse for Star SW Sex distance : 0.152 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star SW Sex distance : 0.293 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star SW Sex distance : 0.304 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star SW Sex)



    (Position in Stellar Map of star SW Sex and its Exoplanet SW Sex b)



    (Zoomed position in Stellar Map of star SW Sex and its Exoplanet SW Sex b (zoom level 3))

    (Synthetic Spectrum of star SW Sex*)
    *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