Imaginary Picture of TOI-784 c

Display orbital revolution of TOI-784 c around the hoststar TOI-784
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Exoplanet Name : TOI-784 c
Alternate Name : HD 307842 c
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 22.0000 (Mjup) 6994.6360 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2200 (AU) 0.2200 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1150
Orbital Period(Observed/Estimated) 42.00 (Days Obs.) 39.51 (Days Est.)
Surface Gravity (G Earth) 67.5495
Star Radiation at Atmospheric Boundary: 19890.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 530.0 (K)
Blackbody T 0.3(K) 497.8 (K)
Blackbody T 0.7(K) 402.7 (K)
Tidally Locked Blackbody T 0.1(K) 630.3 (K)
Tidally Locked Blackbody T 0.3(K) 591.9 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : TOI-784
Alternate Name : HD 307842
Star Distance(LY) : 210.7
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5558 (K)
Spectral type : G6
UV portion[%]: 7.1
Visible portion[%]: 43.6
IR portion[%]: 49.3
Metalicity : -0.1
Absolute Magnitude: 5.3
Apparent Magnitude: 9.4
Right Ascension(RA) 159.3417
Declination (DEC) -63.6550
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-784 c
TOI-784 c

  • TOI-784 c is an exoplanet orbiting the star TOI-784, located about 210.7 light-years (64.6 pc) away from Solar System. Its discovery was publicly announced on 2023.
  • The host star TOI-784 has apparent magnitude of 9.4, with absolute magnitude of 5.3.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5558 with its spectral types of G6
  • In this planetary system, the extrasolar planet TOI-784 c orbits around the star TOI-784 every 42.0 days with its orbital distance of 0.22 AU ( 32911531.6 km)
  • (Projected orbit of TOI-784 c around its host star TOI-784)


  • The Star TOI-784 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.607 AU ( 90803478.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.839 AU ( 125514136.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.278 AU ( 191255768.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.881 AU ( 281441241.1 km)
  • Radiation at Planetary Boundary of TOI-784 c : 19890.61 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-784)



  • Kopparapu Recent Venus for Star TOI-784 distance : 0.637 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-784 distance : 0.807 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-784 distance : 0.779 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-784 distance : 0.855 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-784 distance : 1.434 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-784 distance : 1.513 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-784)



  • Original Kopparapu Recent Venus for Star TOI-784 distance : 0.636 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-784 distance : 0.830 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-784 distance : 0.841 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-784 distance : 1.459 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-784 distance : 1.517 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-784)



    (Position in Stellar Map of star TOI-784 and its Exoplanet TOI-784 c)



    (Zoomed position in Stellar Map of star TOI-784 and its Exoplanet TOI-784 c (zoom level 3))

    (Synthetic Spectrum of star TOI-784*)
    *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