Imaginary Picture of TOI-179 b

Display orbital revolution of TOI-179 b around the hoststar TOI-179
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Exoplanet Name : TOI-179 b
Alternate Name : HD 18599 b
Status : Confirmed
Radius (Rjup / Re): 0.2436 (Rjup) 2.7305 (Rearth)
Mass (Mjup / Me): 0.0758 (Mjup) 24.0997 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0476 (AU) 0.0476 (AU Est.)
Eccentricity : 0.3400
Orbital Period(Yrs) 0.0113
Orbital Period(Observed/Estimated) 4.14 (Days Obs.) 4.22 (Days Est.)
Surface Gravity (G Earth) 3.2324
Star Radiation at Atmospheric Boundary: 230079.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 977.5 (K)
Blackbody T 0.3(K) 918.0 (K)
Blackbody T 0.7(K) 742.7 (K)
Tidally Locked Blackbody T 0.1(K) 1162.4 (K)
Tidally Locked Blackbody T 0.3(K) 1091.6 (K)
Size Class: sub-Neptune-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-179
Alternate Name : HD 18599
Star Distance(LY) : 125.8
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.3 (GY)
Temperature : 5083 (K)
Spectral type : K1
UV portion[%]: 3.8
Visible portion[%]: 38.2
IR portion[%]: 58.0
Metalicity : -0.1
Absolute Magnitude: 6.0
Apparent Magnitude: 8.9
Right Ascension(RA) 44.2625
Declination (DEC) -56.1919
Hubble Space Telescope Guide Star Catalog (GSC) ID 08494-00471
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-179&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-179 b
TOI-179 b

  • TOI-179 b is an exoplanet orbiting the star TOI-179, located about 125.8 light-years (38.6 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star TOI-179 has apparent magnitude of 8.9, with absolute magnitude of 6.0.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5083 with its spectral types of K1
  • In this planetary system, the extrasolar planet TOI-179 b orbits around the star TOI-179 every 4.1 days with its orbital distance of 0.05 AU ( 7120858.6 km)
  • (Projected orbit of TOI-179 b around its host star TOI-179)


  • The Star TOI-179 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.447 AU ( 66819192.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.617 AU ( 92361586.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.941 AU ( 140738617.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.384 AU ( 207103041.1 km)
  • Radiation at Planetary Boundary of TOI-179 b : 230079.08 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-179)



  • Kopparapu Recent Venus for Star TOI-179 distance : 0.481 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-179 distance : 0.609 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-179 distance : 0.589 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-179 distance : 0.646 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-179 distance : 1.101 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-179 distance : 1.161 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-179)



  • Original Kopparapu Recent Venus for Star TOI-179 distance : 0.477 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-179 distance : 0.628 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-179 distance : 0.631 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-179 distance : 1.119 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-179 distance : 1.164 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-179)



    (Position in Stellar Map of star TOI-179 and its Exoplanet TOI-179 b)



    (Zoomed position in Stellar Map of star TOI-179 and its Exoplanet TOI-179 b (zoom level 3))

    (Synthetic Spectrum of star TOI-179*)
    *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