Imaginary Picture of TOI-1217 Ab

Display orbital revolution of TOI-1217 Ab around the hoststar TOI-1217 A
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Exoplanet Name : TOI-1217 Ab
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.3890 (Rjup) 4.3603 (Rearth)
Mass (Mjup / Me): 0.0577 (Mjup) 18.3451 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.2520 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1136
Orbital Period(Observed/Estimated) 41.49 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.9649
Star Radiation at Atmospheric Boundary: 371631.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1102.0 (K)
Blackbody T 0.3(K) 1034.9 (K)
Blackbody T 0.7(K) 837.3 (K)
Tidally Locked Blackbody T 0.1(K) 1310.5 (K)
Tidally Locked Blackbody T 0.3(K) 1230.7 (K)
Size Class: Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : TOI-1217 A
Alternate Name : HD 111914
Star Distance(LY) : 1510.8
Stellar Radius(Rsun) : 3.5 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6307 (K)
Spectral type : F6III-IV
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.0
Absolute Magnitude: 1.8
Apparent Magnitude: 10.2
Right Ascension(RA) 193.2607
Declination (DEC) -44.0994
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-1217 Ab
TOI-1217 Ab

  • TOI-1217 Ab is an exoplanet orbiting the star TOI-1217 A, located about 1510.8 light-years (463.2 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star TOI-1217 A has apparent magnitude of 10.2, with absolute magnitude of 1.8.
  • It is 1.2 times more massive and 3.5 times bigger compared with our Sun. The surface temperature is 6307 with its spectral types of F6III-IV
  • In this planetary system, the extrasolar planet TOI-1217 Ab orbits around the star TOI-1217 A every 41.5 days with its orbital distance of 0.25 AU ( 37693751.8 km)
  • (Projected orbit of TOI-1217 Ab around its host star TOI-1217 A)


  • The Star TOI-1217 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 3.005 AU ( 449526937.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 4.154 AU ( 621363703.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 6.329 AU ( 946820776.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 9.314 AU ( 1393288250.3 km)
  • Radiation at Planetary Boundary of TOI-1217 Ab : 371631.16 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-1217 A)



  • Kopparapu Recent Venus for Star TOI-1217 A distance : 3.016 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-1217 A distance : 3.820 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-1217 A distance : 3.689 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-1217 A distance : 4.042 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1217 A distance : 6.666 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-1217 A distance : 7.031 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-1217 A)



  • Original Kopparapu Recent Venus for Star TOI-1217 A distance : 3.054 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-1217 A distance : 3.918 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-1217 A distance : 4.041 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1217 A distance : 6.786 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-1217 A distance : 7.057 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-1217 A)



    (Position in Stellar Map of star TOI-1217 A and its Exoplanet TOI-1217 Ab)



    (Zoomed position in Stellar Map of star TOI-1217 A and its Exoplanet TOI-1217 Ab (zoom level 3))

    (Synthetic Spectrum of star TOI-1217 A*)
    *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