Imaginary Picture of V921 Sco b

Display orbital revolution of V921 Sco b around the hoststar V921 Sco
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Exoplanet Name : V921 Sco b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 60.0000 (Mjup) 19076.2800 (Mearth)
Semi Major Axis / Orbital Distance Calculated 835.0000 (AU) 835.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 1970629.32 (Days Est.)
Surface Gravity (G Earth) 184.2260
Star Radiation at Atmospheric Boundary: 36.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 109.3 (K)
Blackbody T 0.3(K) 102.7 (K)
Blackbody T 0.7(K) 83.1 (K)
Tidally Locked Blackbody T 0.1(K) 130.0 (K)
Tidally Locked Blackbody T 0.3(K) 122.1 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Imaging
Mass Detection : Spectrum
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : V921 Sco
Alternate Name :
Star Distance(LY) : 4834.9
Stellar Radius(Rsun) : 5.4 (Rsun Estimated)
Stellar Mass(Msun) : 20.0 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 29000 (K)
Spectral type : B0IVe
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 0.1
Apparent Magnitude: 11.0
Right Ascension(RA) 254.7792
Declination (DEC) -42.7025
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
V921 Sco b
V921 Sco b

  • V921 Sco b is an exoplanet orbiting the star V921 Sco, located about 4834.9 light-years (1482.4 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star V921 Sco has apparent magnitude of 11.0, with absolute magnitude of 0.1.
  • It is 20.0 times more massive and 5.4 times bigger compared with our Sun. The surface temperature is 29000 with its spectral types of B0IVe
  • (Projected orbit of V921 Sco b around its host star V921 Sco)


  • The Star V921 Sco 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 97.979 AU ( 14657464857.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 135.433 AU ( 20260446886.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 206.369 AU ( 30872437427.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 303.682 AU ( 45430144109.7 km)
  • Radiation at Planetary Boundary of V921 Sco b : 35.98 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star V921 Sco)



  • Kopparapu Recent Venus for Star V921 Sco distance : nan AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star V921 Sco distance : nan AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star V921 Sco distance : nan AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star V921 Sco distance : nan AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star V921 Sco distance : nan AU
  • Kopparapu Outer Boundary for Early Mars for Star V921 Sco distance : nan AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star V921 Sco)



  • Original Kopparapu Recent Venus for Star V921 Sco distance : nan AU
  • Original Kopparapu Runaway Greenhouse for Star V921 Sco distance : nan AU
  • Original Kopparapu Moist Greenhouse for Star V921 Sco distance : nan AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star V921 Sco distance : nan AU
  • Original Kopparapu Outer Boundary for Early Mars for Star V921 Sco distance : nan AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star V921 Sco)



    (Position in Stellar Map of star V921 Sco and its Exoplanet V921 Sco b)



    (Zoomed position in Stellar Map of star V921 Sco and its Exoplanet V921 Sco b (zoom level 3))

    (Synthetic Spectrum of star V921 Sco*)
    *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