Imaginary Picture of TOI-5803 b

Display orbital revolution of TOI-5803 b around the hoststar TOI-5803
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Exoplanet Name : TOI-5803 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.2920 (Rjup) 3.2732 (Rearth)
Mass (Mjup / Me): 0.0339 (Mjup) 10.7845 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0574 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0147
Orbital Period(Observed/Estimated) 5.38 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.0066
Star Radiation at Atmospheric Boundary: 149437.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 877.5 (K)
Blackbody T 0.3(K) 824.1 (K)
Blackbody T 0.7(K) 666.8 (K)
Tidally Locked Blackbody T 0.1(K) 1043.6 (K)
Tidally Locked Blackbody T 0.3(K) 980.0 (K)
Size Class: Neptune-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-5803
Alternate Name :
Star Distance(LY) : 274.0
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5134 (K)
Spectral type : K1
UV portion[%]: 4.2
Visible portion[%]: 39.0
IR portion[%]: 56.7
Metalicity : 0.0
Absolute Magnitude: 6.1
Apparent Magnitude: 10.7
Right Ascension(RA) 327.2500
Declination (DEC) 6.2781
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-5803 b
TOI-5803 b

  • TOI-5803 b is an exoplanet orbiting the star TOI-5803, located about 274.0 light-years (84.0 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star TOI-5803 has apparent magnitude of 10.7, with absolute magnitude of 6.1.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5134 with its spectral types of K1
  • In this planetary system, the extrasolar planet TOI-5803 b orbits around the star TOI-5803 every 5.4 days with its orbital distance of 0.06 AU ( 8584676.9 km)
  • (Projected orbit of TOI-5803 b around its host star TOI-5803)


  • The Star TOI-5803 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.434 AU ( 64920735.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.600 AU ( 89737422.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.914 AU ( 136739973.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.345 AU ( 201218861.0 km)
  • Radiation at Planetary Boundary of TOI-5803 b : 149437.08 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-5803)



  • Kopparapu Recent Venus for Star TOI-5803 distance : 0.466 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-5803 distance : 0.590 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-5803 distance : 0.570 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-5803 distance : 0.626 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-5803 distance : 1.065 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-5803 distance : 1.123 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-5803)



  • Original Kopparapu Recent Venus for Star TOI-5803 distance : 0.462 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-5803 distance : 0.608 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-5803 distance : 0.611 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-5803 distance : 1.083 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-5803 distance : 1.126 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-5803)



    (Position in Stellar Map of star TOI-5803 and its Exoplanet TOI-5803 b)



    (Zoomed position in Stellar Map of star TOI-5803 and its Exoplanet TOI-5803 b (zoom level 3))

    (Synthetic Spectrum of star TOI-5803*)
    *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