Imaginary Picture of TOI-1680 b

Display orbital revolution of TOI-1680 b around the hoststar TOI-1680
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Exoplanet Name : TOI-1680 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.1308 (Rjup) 1.4660 (Rearth)
Mass (Mjup / Me): 0.0100 (Mjup) 3.1826 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0314 (AU) 0.0314 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0131
Orbital Period(Observed/Estimated) 4.80 (Days Obs.) 4.80 (Days Est.)
Surface Gravity (G Earth) 1.4808
Star Radiation at Atmospheric Boundary: 6081.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 394.1 (K)
Blackbody T 0.3(K) 370.1 (K)
Blackbody T 0.7(K) 299.5 (K)
Tidally Locked Blackbody T 0.1(K) 468.7 (K)
Tidally Locked Blackbody T 0.3(K) 440.2 (K)
Size Class: super-Earth-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-1680
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 0.2 (Rsun Measured)
Stellar Mass(Msun) : 0.2 (Msun Measured) 0.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3224 (K)
Spectral type : M4.5
UV portion[%]: 0.2
Visible portion[%]: 8.5
IR portion[%]: 91.3
Metalicity : 0.0
Absolute Magnitude: 25.0
Apparent Magnitude: 14.5
Right Ascension(RA) 292.3125
Declination (DEC) 65.9744
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-1680 b
TOI-1680 b

  • TOI-1680 b is an exoplanet orbiting the star TOI-1680. Its discovery was publicly announced on 2023.
  • The host star TOI-1680 has apparent magnitude of 14.5, with absolute magnitude of 25.0.
  • It is 0.2 times more massive and 0.2 times bigger compared with our Sun. The surface temperature is 3224 with its spectral types of M4.5
  • In this planetary system, the extrasolar planet TOI-1680 b orbits around the star TOI-1680 every 4.8 days with its orbital distance of 0.03 AU ( 4703357.1 km)
  • (Projected orbit of TOI-1680 b around its host star TOI-1680)


  • The Star TOI-1680 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.048 AU ( 7175097.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.066 AU ( 9917859.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.101 AU ( 15112622.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.149 AU ( 22238886.3 km)
  • Radiation at Planetary Boundary of TOI-1680 b : 6081.06 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-1680)



  • Kopparapu Recent Venus for Star TOI-1680 distance : 0.054 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-1680 distance : 0.069 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-1680 distance : 0.066 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-1680 distance : 0.073 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1680 distance : 0.136 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-1680 distance : 0.143 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-1680)



  • Original Kopparapu Recent Venus for Star TOI-1680 distance : 0.054 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-1680 distance : 0.071 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-1680 distance : 0.072 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1680 distance : 0.138 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-1680 distance : 0.143 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-1680)



    (Position in Stellar Map of star TOI-1680 and its Exoplanet TOI-1680 b)



    (Zoomed position in Stellar Map of star TOI-1680 and its Exoplanet TOI-1680 b (zoom level 3))

    (Synthetic Spectrum of star TOI-1680*)
    *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