Imaginary Picture of TOI-1691 b

Display orbital revolution of TOI-1691 b around the hoststar TOI-1691
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Exoplanet Name : TOI-1691 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.2614 (Rjup) 2.9300 (Rearth)
Mass (Mjup / Me): 0.0459 (Mjup) 14.5934 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1260 (AU) 0.1260 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0458
Orbital Period(Observed/Estimated) 16.74 (Days Obs.) 16.10 (Days Est.)
Surface Gravity (G Earth) 1.6998
Star Radiation at Atmospheric Boundary: 85026.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 762.1 (K)
Blackbody T 0.3(K) 715.7 (K)
Blackbody T 0.7(K) 579.1 (K)
Tidally Locked Blackbody T 0.1(K) 906.3 (K)
Tidally Locked Blackbody T 0.3(K) 851.1 (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-1691
Alternate Name :
Star Distance(LY) : 363.5
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5760 (K)
Spectral type : G3
UV portion[%]: 7.8
Visible portion[%]: 44.7
IR portion[%]: 47.5
Metalicity : 0.0
Absolute Magnitude: 16.8
Apparent Magnitude: 22.0
Right Ascension(RA) 272.4038
Declination (DEC) 86.8603
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-1691 b
TOI-1691 b

  • TOI-1691 b is an exoplanet orbiting the star TOI-1691, located about 363.5 light-years (111.4 pc) away from Solar System. Its discovery was publicly announced on 2024.
  • The host star TOI-1691 has apparent magnitude of 22.0, with absolute magnitude of 16.8.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5760 with its spectral types of G3
  • In this planetary system, the extrasolar planet TOI-1691 b orbits around the star TOI-1691 every 16.7 days with its orbital distance of 0.13 AU ( 18849331.7 km)
  • (Projected orbit of TOI-1691 b around its host star TOI-1691)


  • The Star TOI-1691 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.719 AU ( 107523422.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.993 AU ( 148625469.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.514 AU ( 226472324.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.228 AU ( 333263945.9 km)
  • Radiation at Planetary Boundary of TOI-1691 b : 85026.37 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-1691)



  • Kopparapu Recent Venus for Star TOI-1691 distance : 0.746 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-1691 distance : 0.944 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-1691 distance : 0.912 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-1691 distance : 1.000 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1691 distance : 1.668 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-1691 distance : 1.760 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-1691)



  • Original Kopparapu Recent Venus for Star TOI-1691 distance : 0.746 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-1691 distance : 0.971 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-1691 distance : 0.988 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1691 distance : 1.698 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-1691 distance : 1.766 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-1691)



    (Position in Stellar Map of star TOI-1691 and its Exoplanet TOI-1691 b)



    (Zoomed position in Stellar Map of star TOI-1691 and its Exoplanet TOI-1691 b (zoom level 3))

    (Synthetic Spectrum of star TOI-1691*)
    *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