Imaginary Picture of HD 26161 b

Display orbital revolution of HD 26161 b around the hoststar HD 26161
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Exoplanet Name : HD 26161 b
Alternate Name :
Radius (Rjup / Re): 0.2107 (Rjup) 2.3612 (Rearth)
Mass (Mjup / Me): 0.0425 (Mjup) 13.5124 (Mearth)
Semi Major Axis / Orbital Distance Calculated 20.4000 (AU) 20.4000 (AU Est.)
Eccentricity : 0.8200
Orbital Period(Yrs) 87.6088
Orbital Period(Observed/Estimated) 32000.00 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 2.4235
Star Radiation at Atmospheric Boundary: 3.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 62.9 (K)
Blackbody T 0.3(K) 59.1 (K)
Blackbody T 0.7(K) 47.8 (K)
Tidally Locked Blackbody T 0.1(K) 74.8 (K)
Tidally Locked Blackbody T 0.3(K) 70.2 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 26161
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 1.0 (Rsun Estimated)
Stellar Mass(Msun) : 0.0 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6050 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 25.0
Apparent Magnitude: 22.0
Right Ascension(RA) 62.4083
Declination (DEC) 31.6522
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 26161 b
HD 26161 b

  • HD 26161 b is an exoplanet orbiting the star HD 26161. Its discovery was publicly announced on 2021.
  • The host star HD 26161 has apparent magnitude of 22.0, with absolute magnitude of 25.0.
  • In this planetary system, the extrasolar planet HD 26161 b orbits around the star HD 26161 every 32000.0 days with its orbital distance of 20.40 AU ( 3051796562.3 km)
  • (Projected orbit of HD 26161 b around its host star HD 26161)


  • The Star HD 26161 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.792 AU ( 118523320.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.095 AU ( 163830203.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.669 AU ( 249640973.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.456 AU ( 367357629.0 km)
  • Radiation at Planetary Boundary of HD 26161 b : 3.94 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 26161)



  • Kopparapu Recent Venus for Star HD 26161 distance : 0.808 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 26161 distance : 1.023 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 26161 distance : 0.988 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 26161 distance : 1.083 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 26161 distance : 1.794 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 26161 distance : 1.893 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 26161)



  • Original Kopparapu Recent Venus for Star HD 26161 distance : 0.813 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 26161 distance : 1.050 AU
  • Original Kopparapu Moist Greenhouse for Star HD 26161 distance : 1.076 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 26161 distance : 1.826 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 26161 distance : 1.899 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 26161)



    (Position in Stellar Map of star HD 26161 and its Exoplanet HD 26161 b)



    (Zoomed position in Stellar Map of star HD 26161 and its Exoplanet HD 26161 b (zoom level 3))

    (Synthetic Spectrum of star HD 26161*)
    *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