Imaginary Picture of TOI-1055 b

Display orbital revolution of TOI-1055 b around the hoststar HD 183579
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Exoplanet Name : TOI-1055 b
Alternate Name : HD 183579 b
Status : Confirmed
Radius (Rjup / Re): 0.3149 (Rjup) 3.5297 (Rearth)
Mass (Mjup / Me): 0.0302 (Mjup) 9.6017 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1334 (AU) 0.1334 (AU Est.)
Eccentricity : 0.2800
Orbital Period(Yrs) 0.0478
Orbital Period(Observed/Estimated) 17.47 (Days Obs.) 17.53 (Days Est.)
Surface Gravity (G Earth) 0.7707
Star Radiation at Atmospheric Boundary: 75037.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 738.7 (K)
Blackbody T 0.3(K) 693.7 (K)
Blackbody T 0.7(K) 561.3 (K)
Tidally Locked Blackbody T 0.1(K) 878.5 (K)
Tidally Locked Blackbody T 0.3(K) 825.0 (K)
Size Class: 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 : HD 183579
Alternate Name : TOI-1055
Star Distance(LY) : 186.1
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5788 (K)
Spectral type : G5V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.0
Absolute Magnitude: 4.9
Apparent Magnitude: 8.7
Right Ascension(RA) 293.2875
Declination (DEC) -54.5325
Hubble Space Telescope Guide Star Catalog (GSC) ID 08765-00100
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+183579&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-1055 b
TOI-1055 b

  • TOI-1055 b is an exoplanet orbiting the star HD 183579, located about 186.1 light-years (57.1 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star HD 183579 has apparent magnitude of 8.7, with absolute magnitude of 4.9.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5788 with its spectral types of G5V
  • In this planetary system, the extrasolar planet TOI-1055 b orbits around the star HD 183579 every 17.5 days with its orbital distance of 0.13 AU ( 19956356.0 km)
  • (Projected orbit of TOI-1055 b around its host star HD 183579)


  • The Star HD 183579 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.715 AU ( 106942759.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.988 AU ( 147822841.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.506 AU ( 225249297.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.216 AU ( 331464208.9 km)
  • Radiation at Planetary Boundary of TOI-1055 b : 75037.73 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 183579)



  • Kopparapu Recent Venus for Star HD 183579 distance : 0.740 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 183579 distance : 0.938 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 183579 distance : 0.906 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 183579 distance : 0.993 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 183579 distance : 1.655 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 183579 distance : 1.746 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 183579)



  • Original Kopparapu Recent Venus for Star HD 183579 distance : 0.742 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 183579 distance : 0.964 AU
  • Original Kopparapu Moist Greenhouse for Star HD 183579 distance : 0.981 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 183579 distance : 1.685 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 183579 distance : 1.752 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 183579)



    (Position in Stellar Map of star HD 183579 and its Exoplanet TOI-1055 b)



    (Zoomed position in Stellar Map of star HD 183579 and its Exoplanet TOI-1055 b (zoom level 3))

    (Synthetic Spectrum of star HD 183579*)
    *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