Imaginary Picture of TOI-172 b

Display orbital revolution of TOI-172 b around the hoststar TOI-172
/
Exoplanet Name : TOI-172 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9650 (Rjup) 10.8167 (Rearth)
Mass (Mjup / Me): 5.4100 (Mjup) 1720.0446 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0913 (AU) 0.0913 (AU Est.)
Eccentricity : 0.3805
Orbital Period(Yrs) 0.0259
Orbital Period(Observed/Estimated) 9.48 (Days Obs.) 9.50 (Days Est.)
Surface Gravity (G Earth) 14.7012
Star Radiation at Atmospheric Boundary: 469805.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1168.5 (K)
Blackbody T 0.3(K) 1097.3 (K)
Blackbody T 0.7(K) 887.9 (K)
Tidally Locked Blackbody T 0.1(K) 1389.6 (K)
Tidally Locked Blackbody T 0.3(K) 1304.9 (K)
Size Class: Jupiter-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-172
Alternate Name :
Star Distance(LY) : 1128.6
Stellar Radius(Rsun) : 1.8 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 7.5 (GY)
Temperature : 5644 (K)
Spectral type : G5
UV portion[%]: 7.4
Visible portion[%]: 44.1
IR portion[%]: 48.4
Metalicity : 0.1
Absolute Magnitude: 3.7
Apparent Magnitude: 11.4
Right Ascension(RA) 316.6319
Declination (DEC) -26.6928
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=TOI-172+&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-172 b
TOI-172 b

  • TOI-172 b is an exoplanet orbiting the star TOI-172, located about 1128.6 light-years (346.0 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star TOI-172 has apparent magnitude of 11.4, with absolute magnitude of 3.7.
  • It is 1.1 times more massive and 1.8 times bigger compared with our Sun. The surface temperature is 5644 with its spectral types of G5
  • In this planetary system, the extrasolar planet TOI-172 b orbits around the star TOI-172 every 9.5 days with its orbital distance of 0.09 AU ( 13658285.6 km)
  • (Projected orbit of TOI-172 b around its host star TOI-172)


  • The Star TOI-172 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.224 AU ( 183141066.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.692 AU ( 253148813.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.579 AU ( 385742770.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.794 AU ( 567637385.4 km)
  • Radiation at Planetary Boundary of TOI-172 b : 469805.94 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-172)



  • Kopparapu Recent Venus for Star TOI-172 distance : 1.279 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-172 distance : 1.620 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-172 distance : 1.564 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-172 distance : 1.715 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-172 distance : 2.871 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-172 distance : 3.028 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-172)



  • Original Kopparapu Recent Venus for Star TOI-172 distance : 1.277 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-172 distance : 1.665 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-172 distance : 1.690 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-172 distance : 2.921 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-172 distance : 3.038 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-172)



    (Position in Stellar Map of star TOI-172 and its Exoplanet TOI-172 b)



    (Zoomed position in Stellar Map of star TOI-172 and its Exoplanet TOI-172 b (zoom level 3))

    (Synthetic Spectrum of star TOI-172*)
    *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