Imaginary Picture of TOI-2081 b

Display orbital revolution of TOI-2081 b around the hoststar TOI-2081
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Exoplanet Name : TOI-2081 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.1820 (Rjup) 2.0400 (Rearth)
Mass (Mjup / Me): 0.0160 (Mjup) 5.0870 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0752 (AU) 0.0752 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0288
Orbital Period(Observed/Estimated) 10.51 (Days Obs.) 10.25 (Days Est.)
Surface Gravity (G Earth) 1.2223
Star Radiation at Atmospheric Boundary: 12894.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 475.6 (K)
Blackbody T 0.3(K) 446.6 (K)
Blackbody T 0.7(K) 361.4 (K)
Tidally Locked Blackbody T 0.1(K) 565.6 (K)
Tidally Locked Blackbody T 0.3(K) 531.1 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Theoretical
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : TOI-2081
Alternate Name :
Star Distance(LY) : 203.2
Stellar Radius(Rsun) : 0.5 (Rsun Measured)
Stellar Mass(Msun) : 0.5 (Msun Measured) 0.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3800 (K)
Spectral type : M1
UV portion[%]: 0.3
Visible portion[%]: 13.7
IR portion[%]: 86.0
Metalicity : 0.0
Absolute Magnitude: 9.4
Apparent Magnitude: 13.4
Right Ascension(RA) 264.3042
Declination (DEC) 53.0256
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-2081 b
TOI-2081 b

  • TOI-2081 b is an exoplanet orbiting the star TOI-2081, located about 203.2 light-years (62.3 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star TOI-2081 has apparent magnitude of 13.4, with absolute magnitude of 9.4.
  • It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3800 with its spectral types of M1
  • In this planetary system, the extrasolar planet TOI-2081 b orbits around the star TOI-2081 every 10.5 days with its orbital distance of 0.08 AU ( 11249759.9 km)
  • (Projected orbit of TOI-2081 b around its host star TOI-2081)


  • The Star TOI-2081 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.167 AU ( 24990017.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.231 AU ( 34542735.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.352 AU ( 52635483.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.518 AU ( 77455420.4 km)
  • Radiation at Planetary Boundary of TOI-2081 b : 12893.95 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-2081)



  • Kopparapu Recent Venus for Star TOI-2081 distance : 0.188 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-2081 distance : 0.238 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-2081 distance : 0.230 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-2081 distance : 0.253 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2081 distance : 0.456 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-2081 distance : 0.481 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-2081)



  • Original Kopparapu Recent Venus for Star TOI-2081 distance : 0.186 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-2081 distance : 0.246 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-2081 distance : 0.246 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2081 distance : 0.463 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-2081 distance : 0.482 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-2081)



    (Position in Stellar Map of star TOI-2081 and its Exoplanet TOI-2081 b)



    (Zoomed position in Stellar Map of star TOI-2081 and its Exoplanet TOI-2081 b (zoom level 3))

    (Synthetic Spectrum of star TOI-2081*)
    *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