Imaginary Picture of HD 148193 Ab

Display orbital revolution of HD 148193 Ab around the hoststar HD 148193 A
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Exoplanet Name : HD 148193 Ab
Alternate Name : "TOI-1836 b, TOI-1836.01"
Status : Confirmed
Radius (Rjup / Re): 0.7476 (Rjup) 8.3798 (Rearth)
Mass (Mjup / Me): 0.0894 (Mjup) 28.4237 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1577 (AU) 0.1577 (AU Est.)
Eccentricity : 0.1400
Orbital Period(Yrs) 0.0558
Orbital Period(Observed/Estimated) 20.38 (Days Obs.) 20.37 (Days Est.)
Surface Gravity (G Earth) 0.4048
Star Radiation at Atmospheric Boundary: 210542.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 956.0 (K)
Blackbody T 0.3(K) 897.8 (K)
Blackbody T 0.7(K) 726.4 (K)
Tidally Locked Blackbody T 0.1(K) 1136.9 (K)
Tidally Locked Blackbody T 0.3(K) 1067.7 (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 : HD 148193 A
Alternate Name : TOI-1836
Star Distance(LY) : 625.1
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 3.5 (GY)
Temperature : 6351 (K)
Spectral type : F7IV-V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.1
Absolute Magnitude: 3.4
Apparent Magnitude: 9.8
Right Ascension(RA) 245.9082
Declination (DEC) 54.6898
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
HD 148193 Ab
HD 148193 Ab

  • HD 148193 Ab is an exoplanet orbiting the star HD 148193 A, located about 625.1 light-years (191.6 pc) away from Solar System. Its discovery was publicly announced on 2024.
  • The host star HD 148193 A has apparent magnitude of 9.8, with absolute magnitude of 3.4.
  • It is 1.3 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 6351 with its spectral types of F7IV-V
  • In this planetary system, the extrasolar planet HD 148193 Ab orbits around the star HD 148193 A every 20.4 days with its orbital distance of 0.16 AU ( 23591584.2 km)
  • (Projected orbit of HD 148193 Ab around its host star HD 148193 A)


  • The Star HD 148193 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.416 AU ( 211766545.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.957 AU ( 292716707.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.982 AU ( 446035483.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.388 AU ( 656360754.1 km)
  • Radiation at Planetary Boundary of HD 148193 Ab : 210542.56 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 148193 A)



  • Kopparapu Recent Venus for Star HD 148193 A distance : 1.417 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 148193 A distance : 1.795 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 148193 A distance : 1.733 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 148193 A distance : 1.899 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 148193 A distance : 3.130 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 148193 A distance : 3.301 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 148193 A)



  • Original Kopparapu Recent Venus for Star HD 148193 A distance : 1.436 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 148193 A distance : 1.841 AU
  • Original Kopparapu Moist Greenhouse for Star HD 148193 A distance : 1.901 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 148193 A distance : 3.186 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 148193 A distance : 3.313 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 148193 A)



    (Position in Stellar Map of star HD 148193 A and its Exoplanet HD 148193 Ab)



    (Zoomed position in Stellar Map of star HD 148193 A and its Exoplanet HD 148193 Ab (zoom level 3))

    (Synthetic Spectrum of star HD 148193 A*)
    *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