Imaginary Picture of AS 205 A b
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Exoplanet Name : AS 205 A b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 19.2500 (Mjup) 6120.3065 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1620 (AU) 0.1620 (AU Est.)
Eccentricity : 0.3500
Orbital Period(Yrs) 0.0680
Orbital Period(Observed/Estimated) 24.84 (Days Obs.) 25.10 (Days Est.)
Star Radiation at Atmospheric Boundary: 218701.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 965.2 (K)
Blackbody T 0.3(K) 906.4 (K)
Blackbody T 0.7(K) 733.4 (K)
Tidally Locked Blackbody T 0.1(K) 1147.8 (K)
Tidally Locked Blackbody T 0.3(K) 1077.9 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : AS 205A
Alternate Name : V866 Sco
Star Distance(LY) : 456.6
Stellar Radius(Rsun) : 3.7 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4300 (K)
Spectral type : K5
Metalicity : 0.0
Absolute Magnitude: 6.7
Apparent Magnitude: 12.4
Right Ascension(RA) 242.8806
Declination (DEC) -18.6403
Hubble Space Telescope Guide Star Catalog (GSC) ID 06205-01297
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=AS+205A&submit=SIMBAD+search
Open Exoplanet Database Link
AS 205 A b
AS 205 A b

  • AS 205 A b is an exoplanet orbiting the star AS 205A, located about 456.6 light-years (140.0 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star AS 205A has apparent magnitude of 12.4, with absolute magnitude of 6.7.
  • It is 0.9 times more massive and 3.7 times bigger compared with our Sun. The surface temperature is 4300 with its spectral types of K5
  • In this planetary system, the extrasolar planet AS 205 A b orbits around the star AS 205A every 24.8 days with its orbital distance of 0.16 AU ( 24234855.1 km)
  • (Projected orbit of AS 205 A b around its host star AS 205A)


  • The Star AS 205A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.482 AU ( 221715853.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.049 AU ( 306469250.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.122 AU ( 466991316.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.594 AU ( 687198179.9 km)
  • Radiation at Planetary Boundary of AS 205 A b : 218701.65 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star AS 205A)



  • Kopparapu Recent Venus for Star AS 205A distance : 1.648 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star AS 205A distance : 2.086 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star AS 205A distance : 2.014 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star AS 205A distance : 2.213 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star AS 205A distance : 3.900 AU
  • Kopparapu Outer Boundary for Early Mars for Star AS 205A distance : 4.114 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star AS 205A)



  • Original Kopparapu Recent Venus for Star AS 205A distance : 1.626 AU
  • Original Kopparapu Runaway Greenhouse for Star AS 205A distance : 2.155 AU
  • Original Kopparapu Moist Greenhouse for Star AS 205A distance : 2.151 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star AS 205A distance : 3.963 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star AS 205A distance : 4.121 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star AS 205A)



    (Position in Stellar Map of star AS 205A and its Exoplanet AS 205 A b)



    (Zoomed position in Stellar Map of star AS 205A and its Exoplanet AS 205 A b (zoom level 3))