Imaginary Picture of TOI-5126 c

Display orbital revolution of TOI-5126 c around the hoststar TOI-5126
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Exoplanet Name : TOI-5126 c
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.3480 (Rjup) 3.9007 (Rearth)
Mass (Mjup / Me): 0.0294 (Mjup) 9.3558 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1435 (AU) 0.1435 (AU Est.)
Eccentricity : 0.2000
Orbital Period(Yrs) 0.0490
Orbital Period(Observed/Estimated) 17.90 (Days Obs.) 17.83 (Days Est.)
Surface Gravity (G Earth) 0.6149
Star Radiation at Atmospheric Boundary: 131203.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 849.4 (K)
Blackbody T 0.3(K) 797.7 (K)
Blackbody T 0.7(K) 645.4 (K)
Tidally Locked Blackbody T 0.1(K) 1010.2 (K)
Tidally Locked Blackbody T 0.3(K) 948.6 (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-5126
Alternate Name :
Star Distance(LY) : 525.4
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 0.8 (GY)
Temperature : 6150 (K)
Spectral type : G0
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.2
Absolute Magnitude: 4.1
Apparent Magnitude: 10.1
Right Ascension(RA) 151.6583
Declination (DEC) 18.6342
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-5126 c
TOI-5126 c

  • TOI-5126 c is an exoplanet orbiting the star TOI-5126, located about 525.4 light-years (161.1 pc) away from Solar System. Its discovery was publicly announced on 2023.
  • The host star TOI-5126 has apparent magnitude of 10.1, with absolute magnitude of 4.1.
  • It is 1.2 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 6150 with its spectral types of G0
  • In this planetary system, the extrasolar planet TOI-5126 c orbits around the star TOI-5126 every 17.9 days with its orbital distance of 0.14 AU ( 21467294.4 km)
  • (Projected orbit of TOI-5126 c around its host star TOI-5126)


  • The Star TOI-5126 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.017 AU ( 152117831.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.406 AU ( 210266596.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.142 AU ( 320399760.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.152 AU ( 471482283.6 km)
  • Radiation at Planetary Boundary of TOI-5126 c : 131203.38 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-5126)



  • Kopparapu Recent Venus for Star TOI-5126 distance : 1.030 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-5126 distance : 1.305 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-5126 distance : 1.260 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-5126 distance : 1.381 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-5126 distance : 2.284 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-5126 distance : 2.409 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-5126)



  • Original Kopparapu Recent Venus for Star TOI-5126 distance : 1.040 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-5126 distance : 1.339 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-5126 distance : 1.376 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-5126 distance : 2.325 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-5126 distance : 2.418 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-5126)



    (Position in Stellar Map of star TOI-5126 and its Exoplanet TOI-5126 c)



    (Zoomed position in Stellar Map of star TOI-5126 and its Exoplanet TOI-5126 c (zoom level 3))

    (Synthetic Spectrum of star TOI-5126*)
    *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