Imaginary Picture of TOI-732 c

Display orbital revolution of TOI-732 c around the hoststar TOI-732
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Exoplanet Name : TOI-732 c
Alternate Name : LTT 3780 c
Status : Confirmed
Radius (Rjup / Re): 0.2132 (Rjup) 2.3898 (Rearth)
Mass (Mjup / Me): 0.0253 (Mjup) 8.0438 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0757 (AU) 0.0757 (AU Est.)
Eccentricity : 0.0240
Orbital Period(Yrs) 0.0335
Orbital Period(Observed/Estimated) 12.25 (Days Obs.) 12.34 (Days Est.)
Surface Gravity (G Earth) 1.4085
Star Radiation at Atmospheric Boundary: 3929.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 353.4 (K)
Blackbody T 0.3(K) 331.8 (K)
Blackbody T 0.7(K) 268.5 (K)
Tidally Locked Blackbody T 0.1(K) 420.2 (K)
Tidally Locked Blackbody T 0.3(K) 394.6 (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-732
Alternate Name :
Star Distance(LY) : 71.7
Stellar Radius(Rsun) : 0.4 (Rsun Measured)
Stellar Mass(Msun) : 0.4 (Msun Measured) 0.4 (Msun Estimated)
Star Age : 3.1 (GY)
Temperature : 3358 (K)
Spectral type : M5
UV portion[%]: 0.2
Visible portion[%]: 12.4
IR portion[%]: 87.4
Metalicity : 0.1
Absolute Magnitude: 20.3
Apparent Magnitude: 22.0
Right Ascension(RA) 154.6464
Declination (DEC) -11.7178
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LTT+3780+&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-732 c
TOI-732 c

  • TOI-732 c is an exoplanet orbiting the star TOI-732, located about 71.7 light-years (22.0 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star TOI-732 has apparent magnitude of 22.0, with absolute magnitude of 20.3.
  • It is 0.4 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3358 with its spectral types of M5
  • In this planetary system, the extrasolar planet TOI-732 c orbits around the star TOI-732 every 12.3 days with its orbital distance of 0.08 AU ( 11324558.8 km)
  • (Projected orbit of TOI-732 c around its host star TOI-732)


  • The Star TOI-732 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.093 AU ( 13886829.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.128 AU ( 19195227.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.196 AU ( 29249278.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.288 AU ( 43041593.9 km)
  • Radiation at Planetary Boundary of TOI-732 c : 3929.19 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-732)



  • Kopparapu Recent Venus for Star TOI-732 distance : 0.105 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-732 distance : 0.133 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-732 distance : 0.128 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-732 distance : 0.141 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-732 distance : 0.260 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-732 distance : 0.275 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-732)



  • Original Kopparapu Recent Venus for Star TOI-732 distance : 0.104 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-732 distance : 0.138 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-732 distance : 0.138 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-732 distance : 0.265 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-732 distance : 0.275 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-732)



    (Position in Stellar Map of star TOI-732 and its Exoplanet TOI-732 c)



    (Zoomed position in Stellar Map of star TOI-732 and its Exoplanet TOI-732 c (zoom level 3))

    (Synthetic Spectrum of star TOI-732*)
    *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