Imaginary Picture of TOI-1842 b

Display orbital revolution of TOI-1842 b around the hoststar TOI-1842
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Exoplanet Name : TOI-1842 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.0400 (Rjup) 11.6574 (Rearth)
Mass (Mjup / Me): 0.2140 (Mjup) 68.0387 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1000 (AU) 0.1000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0262
Orbital Period(Observed/Estimated) 9.57 (Days Obs.) 9.56 (Days Est.)
Surface Gravity (G Earth) 0.5007
Star Radiation at Atmospheric Boundary: 753806.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1315.1 (K)
Blackbody T 0.3(K) 1235.0 (K)
Blackbody T 0.7(K) 999.3 (K)
Tidally Locked Blackbody T 0.1(K) 1563.9 (K)
Tidally Locked Blackbody T 0.3(K) 1468.7 (K)
Size Class: 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-1842
Alternate Name :
Star Distance(LY) : 728.9
Stellar Radius(Rsun) : 2.0 (Rsun Measured)
Stellar Mass(Msun) : 1.5 (Msun Measured) 1.5 (Msun Estimated)
Star Age : 2.5 (GY)
Temperature : 6230 (K)
Spectral type : F8
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.2
Absolute Magnitude: 2.9
Apparent Magnitude: 9.6
Right Ascension(RA) 201.9625
Declination (DEC) 9.0306
Hubble Space Telescope Guide Star Catalog (GSC) ID 00892-00028
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.cds.unistra.fr/simbad/sim-basic?Ident=TOI-1842&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-1842 b
TOI-1842 b

  • TOI-1842 b is an exoplanet orbiting the star TOI-1842, located about 728.9 light-years (223.5 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star TOI-1842 has apparent magnitude of 9.6, with absolute magnitude of 2.9.
  • It is 1.5 times more massive and 2.0 times bigger compared with our Sun. The surface temperature is 6230 with its spectral types of F8
  • In this planetary system, the extrasolar planet TOI-1842 b orbits around the star TOI-1842 every 9.6 days with its orbital distance of 0.10 AU ( 14959787.1 km)
  • (Projected orbit of TOI-1842 b around its host star TOI-1842)


  • The Star TOI-1842 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.698 AU ( 254088831.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.348 AU ( 351217165.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.577 AU ( 535177236.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.264 AU ( 787536748.2 km)
  • Radiation at Planetary Boundary of TOI-1842 b : 753806.25 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-1842)



  • Kopparapu Recent Venus for Star TOI-1842 distance : 1.713 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-1842 distance : 2.169 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-1842 distance : 2.095 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-1842 distance : 2.296 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1842 distance : 3.791 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-1842 distance : 3.998 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-1842)



  • Original Kopparapu Recent Venus for Star TOI-1842 distance : 1.731 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-1842 distance : 2.225 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-1842 distance : 2.291 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1842 distance : 3.859 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-1842 distance : 4.013 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-1842)



    (Position in Stellar Map of star TOI-1842 and its Exoplanet TOI-1842 b)



    (Zoomed position in Stellar Map of star TOI-1842 and its Exoplanet TOI-1842 b (zoom level 3))

    (Synthetic Spectrum of star TOI-1842*)
    *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