Imaginary Picture of TOI-1853 b

Display orbital revolution of TOI-1853 b around the hoststar TOI-1853
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Exoplanet Name : TOI-1853 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.3247 (Rjup) 3.6396 (Rearth)
Mass (Mjup / Me): 0.0406 (Mjup) 12.9083 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0212 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0034
Orbital Period(Observed/Estimated) 1.24 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.9745
Star Radiation at Atmospheric Boundary: 1175428.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1469.6 (K)
Blackbody T 0.3(K) 1380.1 (K)
Blackbody T 0.7(K) 1116.6 (K)
Tidally Locked Blackbody T 0.1(K) 1747.6 (K)
Tidally Locked Blackbody T 0.3(K) 1641.2 (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-1853
Alternate Name :
Star Distance(LY) : 538.5
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4969 (K)
Spectral type : K2
UV portion[%]: 3.1
Visible portion[%]: 36.7
IR portion[%]: 60.2
Metalicity : 0.2
Absolute Magnitude: 6.1
Apparent Magnitude: 12.2
Right Ascension(RA) 211.4583
Declination (DEC) 16.9925
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-1853 b
TOI-1853 b

  • TOI-1853 b is an exoplanet orbiting the star TOI-1853, located about 538.5 light-years (165.1 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star TOI-1853 has apparent magnitude of 12.2, with absolute magnitude of 6.1.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4969 with its spectral types of K2
  • In this planetary system, the extrasolar planet TOI-1853 b orbits around the star TOI-1853 every 1.2 days with its orbital distance of 0.02 AU ( 3169180.5 km)
  • (Projected orbit of TOI-1853 b around its host star TOI-1853)


  • The Star TOI-1853 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.449 AU ( 67216422.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.621 AU ( 92910661.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.946 AU ( 141575286.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.393 AU ( 208334236.3 km)
  • Radiation at Planetary Boundary of TOI-1853 b : 1175428.60 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-1853)



  • Kopparapu Recent Venus for Star TOI-1853 distance : 0.487 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-1853 distance : 0.616 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-1853 distance : 0.595 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-1853 distance : 0.653 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1853 distance : 1.118 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-1853 distance : 1.180 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-1853)



  • Original Kopparapu Recent Venus for Star TOI-1853 distance : 0.481 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-1853 distance : 0.635 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-1853 distance : 0.637 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1853 distance : 1.137 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-1853 distance : 1.183 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-1853)



    (Position in Stellar Map of star TOI-1853 and its Exoplanet TOI-1853 b)



    (Zoomed position in Stellar Map of star TOI-1853 and its Exoplanet TOI-1853 b (zoom level 3))

    (Synthetic Spectrum of star TOI-1853*)
    *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