Imaginary Picture of HD 207496 b

Display orbital revolution of HD 207496 b around the hoststar HD 207496
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Exoplanet Name : HD 207496 b
Alternate Name : TOI-1099 b
Status : Confirmed
Radius (Rjup / Re): 0.2007 (Rjup) 2.2496 (Rearth)
Mass (Mjup / Me): 0.0192 (Mjup) 6.1044 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0629 (AU) 0.0629 (AU Est.)
Eccentricity : 0.2300
Orbital Period(Yrs) 0.0176
Orbital Period(Observed/Estimated) 6.44 (Days Obs.) 6.44 (Days Est.)
Surface Gravity (G Earth) 1.2062
Star Radiation at Atmospheric Boundary: 98851.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 791.4 (K)
Blackbody T 0.3(K) 743.2 (K)
Blackbody T 0.7(K) 601.3 (K)
Tidally Locked Blackbody T 0.1(K) 941.1 (K)
Tidally Locked Blackbody T 0.3(K) 883.8 (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 : HD 207496
Alternate Name : TOI-1099
Star Distance(LY) : 77.1
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.5 (GY)
Temperature : 4819 (K)
Spectral type : K2.5 V
UV portion[%]: 2.5
Visible portion[%]: 35.6
IR portion[%]: 61.9
Metalicity : 0.1
Absolute Magnitude: 6.1
Apparent Magnitude: 8.0
Right Ascension(RA) 205.4500
Declination (DEC) -77.3389
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 207496 b
HD 207496 b

  • HD 207496 b is an exoplanet orbiting the star HD 207496, located about 77.1 light-years (23.6 pc) away from Solar System. Its discovery was publicly announced on 2023.
  • The host star HD 207496 has apparent magnitude of 8.0, with absolute magnitude of 6.1.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4819 with its spectral types of K2.5 V
  • In this planetary system, the extrasolar planet HD 207496 b orbits around the star HD 207496 every 6.4 days with its orbital distance of 0.06 AU ( 9409706.1 km)
  • (Projected orbit of HD 207496 b around its host star HD 207496)


  • The Star HD 207496 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.387 AU ( 57875972.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.535 AU ( 79999719.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.815 AU ( 121901868.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.199 AU ( 179383939.6 km)
  • Radiation at Planetary Boundary of HD 207496 b : 98851.65 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 207496)



  • Kopparapu Recent Venus for Star HD 207496 distance : 0.422 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 207496 distance : 0.534 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 207496 distance : 0.516 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 207496 distance : 0.566 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 207496 distance : 0.976 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 207496 distance : 1.029 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 207496)



  • Original Kopparapu Recent Venus for Star HD 207496 distance : 0.417 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 207496 distance : 0.551 AU
  • Original Kopparapu Moist Greenhouse for Star HD 207496 distance : 0.552 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 207496 distance : 0.992 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 207496 distance : 1.031 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 207496)



    (Position in Stellar Map of star HD 207496 and its Exoplanet HD 207496 b)



    (Zoomed position in Stellar Map of star HD 207496 and its Exoplanet HD 207496 b (zoom level 3))

    (Synthetic Spectrum of star HD 207496*)
    *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