Imaginary Picture of TOI-125 d

Display orbital revolution of TOI-125 d around the hoststar TOI-125
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Exoplanet Name : TOI-125 d
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.2614 (Rjup) 2.9300 (Rearth)
Mass (Mjup / Me): 0.0428 (Mjup) 13.6077 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1370 (AU) 0.1370 (AU Est.)
Eccentricity : 0.1680
Orbital Period(Yrs) 0.0547
Orbital Period(Observed/Estimated) 19.98 (Days Obs.) 19.98 (Days Est.)
Surface Gravity (G Earth) 1.5850
Star Radiation at Atmospheric Boundary: 37635.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 621.6 (K)
Blackbody T 0.3(K) 583.8 (K)
Blackbody T 0.7(K) 472.3 (K)
Tidally Locked Blackbody T 0.1(K) 739.3 (K)
Tidally Locked Blackbody T 0.3(K) 694.2 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Spectrum
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : TOI-125
Alternate Name :
Star Distance(LY) : 363.3
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 6.8 (GY)
Temperature : 5320 (K)
Spectral type : K0V
UV portion[%]: 5.9
Visible portion[%]: 41.6
IR portion[%]: 52.4
Metalicity : -0.0
Absolute Magnitude: 16.8
Apparent Magnitude: 22.0
Right Ascension(RA) 23.5935
Declination (DEC) -66.6763
Hubble Space Telescope Guide Star Catalog (GSC) ID 08856-00192
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-125&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-125 d
TOI-125 d

  • TOI-125 d is an exoplanet orbiting the star TOI-125, located about 363.3 light-years (111.4 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star TOI-125 has apparent magnitude of 22.0, with absolute magnitude of 16.8.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5320 with its spectral types of K0V
  • In this planetary system, the extrasolar planet TOI-125 d orbits around the star TOI-125 every 20.0 days with its orbital distance of 0.14 AU ( 20494908.3 km)
  • (Projected orbit of TOI-125 d around its host star TOI-125)


  • The Star TOI-125 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.520 AU ( 77781663.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.719 AU ( 107514586.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.095 AU ( 163828436.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.612 AU ( 241080721.3 km)
  • Radiation at Planetary Boundary of TOI-125 d : 37635.87 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-125)



  • Kopparapu Recent Venus for Star TOI-125 distance : 0.553 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-125 distance : 0.701 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-125 distance : 0.677 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-125 distance : 0.742 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-125 distance : 1.255 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-125 distance : 1.323 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-125)



  • Original Kopparapu Recent Venus for Star TOI-125 distance : 0.550 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-125 distance : 0.721 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-125 distance : 0.727 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-125 distance : 1.276 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-125 distance : 1.327 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-125)



    (Position in Stellar Map of star TOI-125 and its Exoplanet TOI-125 d)



    (Zoomed position in Stellar Map of star TOI-125 and its Exoplanet TOI-125 d (zoom level 3))

    (Synthetic Spectrum of star TOI-125*)
    *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