Imaginary Picture of TOI-108 b

Display orbital revolution of TOI-108 b around the hoststar HATS-13
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Exoplanet Name : TOI-108 b
Alternate Name : HATS-13 b
Status : Confirmed
Radius (Rjup / Re): 1.2120 (Rjup) 13.5853 (Rearth)
Mass (Mjup / Me): 0.5430 (Mjup) 172.6403 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0406 (AU) 0.0406 (AU Est.)
Eccentricity : 0.1800
Orbital Period(Yrs) 0.0083
Orbital Period(Observed/Estimated) 3.04 (Days Obs.) 3.04 (Days Est.)
Surface Gravity (G Earth) 0.9354
Star Radiation at Atmospheric Boundary: 545434.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1212.9 (K)
Blackbody T 0.3(K) 1139.0 (K)
Blackbody T 0.7(K) 921.6 (K)
Tidally Locked Blackbody T 0.1(K) 1442.4 (K)
Tidally Locked Blackbody T 0.3(K) 1354.6 (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 : HATS-13
Alternate Name :
Star Distance(LY) : 1552.5
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 2.5 (GY)
Temperature : 5523 (K)
Spectral type : G7
UV portion[%]: 7.0
Visible portion[%]: 43.4
IR portion[%]: 49.6
Metalicity : 0.1
Absolute Magnitude: 5.5
Apparent Magnitude: 13.9
Right Ascension(RA) 316.9615
Declination (DEC) -26.0967
Hubble Space Telescope Guide Star Catalog (GSC) ID 06928-00497
Discovered by
Discovery Paper - Authors "L. Mancini, J. D. Hartman, K. Penev, G. A. Bakos, R. Brahm, S. Ciceri, Th. Henning, Z. Csubry, D. Bayliss, G. Zhou, M. Rabus, M. de Val-Borro, N. Espinoza, A. Jordan, V. Suc, W. Bhatti, B. Schmidt, B. Sato, T. G. Tan, D. J. Wright, C. G. Tinney, B. C. Addison, R. W. Noyes, J. Lazar, I. Papp, P. Sari"
Discovery Paper - Title HATS-13b and HATS-14b: two transiting hot Jupiters from the HATSouth survey
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HATS-13+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HATS-13%20b/
TOI-108 b
TOI-108 b
  • TOI-108 b is an exoplanet orbiting the star HATS-13, located about 1552.5 light-years (476.0 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star HATS-13 has apparent magnitude of 13.9, with absolute magnitude of 5.5.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5523 with its spectral types of G7
  • In this planetary system, the extrasolar planet TOI-108 b orbits around the star HATS-13 every 3.0 days with its orbital distance of 0.04 AU ( 6069185.6 km)
    • (Projected orbit of TOI-108 b around its host star HATS-13)


  • The Star HATS-13 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.586 AU ( 87686314.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.810 AU ( 121205402.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.235 AU ( 184690210.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.817 AU ( 271779735.5 km)
  • Radiation at Planetary Boundary of TOI-108 b : 545434.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HATS-13)



  • Kopparapu Recent Venus for Star HATS-13 distance : 0.617 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HATS-13 distance : 0.781 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HATS-13 distance : 0.754 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HATS-13 distance : 0.827 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-13 distance : 1.389 AU
  • Kopparapu Outer Boundary for Early Mars for Star HATS-13 distance : 1.465 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HATS-13)



  • Original Kopparapu Recent Venus for Star HATS-13 distance : 0.615 AU
  • Original Kopparapu Runaway Greenhouse for Star HATS-13 distance : 0.803 AU
  • Original Kopparapu Moist Greenhouse for Star HATS-13 distance : 0.813 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-13 distance : 1.413 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HATS-13 distance : 1.470 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HATS-13)



    (Position in Stellar Map of star HATS-13 and its Exoplanet TOI-108 b)



    (Zoomed position in Stellar Map of star HATS-13 and its Exoplanet TOI-108 b (zoom level 3))

    (Synthetic Spectrum of star HATS-13*)
    *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