Imaginary Picture of TOI-503 b

Display orbital revolution of TOI-503 b around the hoststar TOI-503
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Exoplanet Name : TOI-503 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.2900 (Rjup) 14.4596 (Rearth)
Mass (Mjup / Me): 53.6000 (Mjup) 17041.4768 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0567 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0101
Orbital Period(Observed/Estimated) 3.68 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 81.5068
Star Radiation at Atmospheric Boundary: 4159029.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 2015.5 (K)
Blackbody T 0.3(K) 1892.8 (K)
Blackbody T 0.7(K) 1531.5 (K)
Tidally Locked Blackbody T 0.1(K) 2396.9 (K)
Tidally Locked Blackbody T 0.3(K) 2250.9 (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 : TOI-503
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 1.8 (Rsun Measured)
Stellar Mass(Msun) : 1.8 (Msun Measured) 1.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 7639 (K)
Spectral type : A7
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.6
Absolute Magnitude: 25.0
Apparent Magnitude: 9.4
Right Ascension(RA) 124.3208
Declination (DEC) 12.6014
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
TOI-503 b
TOI-503 b

  • TOI-503 b is an exoplanet orbiting the star TOI-503. Its discovery was publicly announced on 2019.
  • The host star TOI-503 has apparent magnitude of 9.4, with absolute magnitude of 25.0.
  • It is 1.8 times more massive and 1.8 times bigger compared with our Sun. The surface temperature is 7639 with its spectral types of A7
  • In this planetary system, the extrasolar planet TOI-503 b orbits around the star TOI-503 every 3.7 days with its orbital distance of 0.06 AU ( 8485118.0 km)
  • (Projected orbit of TOI-503 b around its host star TOI-503)


  • The Star TOI-503 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 2.263 AU ( 338519868.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 3.128 AU ( 467922924.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 4.766 AU ( 713010985.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 7.014 AU ( 1049226899.7 km)
  • Radiation at Planetary Boundary of TOI-503 b : 4159029.17 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-503)



  • Kopparapu Recent Venus for Star TOI-503 distance : 2.137 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-503 distance : 2.707 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-503 distance : 2.614 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-503 distance : 2.862 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-503 distance : 4.667 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-503 distance : 4.922 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-503)



  • Original Kopparapu Recent Venus for Star TOI-503 distance : 2.218 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-503 distance : 2.766 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-503 distance : 2.935 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-503 distance : 4.752 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-503 distance : 4.942 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-503)



    (Position in Stellar Map of star TOI-503 and its Exoplanet TOI-503 b)



    (Zoomed position in Stellar Map of star TOI-503 and its Exoplanet TOI-503 b (zoom level 3))

    (Synthetic Spectrum of star TOI-503*)
    *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