Imaginary Picture of TOI-2406 b

Display orbital revolution of TOI-2406 b around the hoststar TOI-2406
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Exoplanet Name : TOI-2406 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.2623 (Rjup) 2.9401 (Rearth)
Mass (Mjup / Me): 0.0286 (Mjup) 9.0930 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0228 (AU) 0.0228 (AU Est.)
Eccentricity : 0.2600
Orbital Period(Yrs) 0.0084
Orbital Period(Observed/Estimated) 3.08 (Days Obs.) 3.12 (Days Est.)
Surface Gravity (G Earth) 1.0519
Star Radiation at Atmospheric Boundary: 8889.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 433.4 (K)
Blackbody T 0.3(K) 407.0 (K)
Blackbody T 0.7(K) 329.3 (K)
Tidally Locked Blackbody T 0.1(K) 515.4 (K)
Tidally Locked Blackbody T 0.3(K) 484.0 (K)
Size Class: sub-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-2406
Alternate Name :
Star Distance(LY) : 181.3
Stellar Radius(Rsun) : 0.2 (Rsun Measured)
Stellar Mass(Msun) : 0.2 (Msun Measured) 0.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3100 (K)
Spectral type : M4V
UV portion[%]: 0.1
Visible portion[%]: 6.8
IR portion[%]: 93.1
Metalicity : -0.4
Absolute Magnitude: 14.3
Apparent Magnitude: 18.0
Right Ascension(RA) 8.8042
Declination (DEC) -3.3706
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=TOI-2406&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-2406 b
TOI-2406 b

  • TOI-2406 b is an exoplanet orbiting the star TOI-2406, located about 181.3 light-years (55.6 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star TOI-2406 has apparent magnitude of 18.0, with absolute magnitude of 14.3.
  • It is 0.2 times more massive and 0.2 times bigger compared with our Sun. The surface temperature is 3100 with its spectral types of M4V
  • In this planetary system, the extrasolar planet TOI-2406 b orbits around the star TOI-2406 every 3.1 days with its orbital distance of 0.02 AU ( 3410831.5 km)
  • (Projected orbit of TOI-2406 b around its host star TOI-2406)


  • The Star TOI-2406 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.042 AU ( 6291191.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.058 AU ( 8696070.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.089 AU ( 13250886.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.130 AU ( 19499259.7 km)
  • Radiation at Planetary Boundary of TOI-2406 b : 8889.65 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-2406)



  • Kopparapu Recent Venus for Star TOI-2406 distance : 0.048 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-2406 distance : 0.060 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-2406 distance : 0.058 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-2406 distance : 0.064 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2406 distance : 0.120 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-2406 distance : 0.126 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-2406)



  • Original Kopparapu Recent Venus for Star TOI-2406 distance : 0.047 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-2406 distance : 0.063 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-2406 distance : 0.063 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2406 distance : 0.122 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-2406 distance : 0.127 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-2406)



    (Position in Stellar Map of star TOI-2406 and its Exoplanet TOI-2406 b)



    (Zoomed position in Stellar Map of star TOI-2406 and its Exoplanet TOI-2406 b (zoom level 3))

    (Synthetic Spectrum of star TOI-2406*)
    *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