Imaginary Picture of HD 79181 b

Display orbital revolution of HD 79181 b around the hoststar HD 79181
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Exoplanet Name : HD 79181 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.6400 (Mjup) 203.4803 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.9000 (AU) 0.9000 (AU Est.)
Eccentricity : 0.2600
Orbital Period(Yrs) 0.7477
Orbital Period(Observed/Estimated) 273.10 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.9651
Star Radiation at Atmospheric Boundary: 860.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 241.7 (K)
Blackbody T 0.3(K) 227.0 (K)
Blackbody T 0.7(K) 183.7 (K)
Tidally Locked Blackbody T 0.1(K) 287.5 (K)
Tidally Locked Blackbody T 0.3(K) 270.0 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 79181
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 0.8 (Rsun Estimated)
Stellar Mass(Msun) : 0.0 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5440 (K)
Spectral type : G8 III
UV portion[%]: 6.6
Visible portion[%]: 42.8
IR portion[%]: 50.6
Metalicity : 0.0
Absolute Magnitude: 25.0
Apparent Magnitude: 22.0
Right Ascension(RA) 137.9958
Declination (DEC) -19.7475
Hubble Space Telescope Guide Star Catalog (GSC) ID 06035-02051
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+79181&submit=SIMBAD+search
Open Exoplanet Database Link
HD 79181 b
HD 79181 b

  • HD 79181 b is an exoplanet orbiting the star HD 79181. Its discovery was publicly announced on 2021.
  • The host star HD 79181 has apparent magnitude of 22.0, with absolute magnitude of 25.0.
  • In this planetary system, the extrasolar planet HD 79181 b orbits around the star HD 79181 every 273.1 days with its orbital distance of 0.90 AU ( 134638083.6 km)
  • (Projected orbit of HD 79181 b around its host star HD 79181)


  • The Star HD 79181 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.517 AU ( 77267751.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.714 AU ( 106804225.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.088 AU ( 162746003.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.601 AU ( 239487873.8 km)
  • Radiation at Planetary Boundary of HD 79181 b : 860.60 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 79181)



  • Kopparapu Recent Venus for Star HD 79181 distance : 0.546 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 79181 distance : 0.691 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 79181 distance : 0.668 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 79181 distance : 0.732 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 79181 distance : 1.233 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 79181 distance : 1.301 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 79181)



  • Original Kopparapu Recent Venus for Star HD 79181 distance : 0.543 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 79181 distance : 0.711 AU
  • Original Kopparapu Moist Greenhouse for Star HD 79181 distance : 0.719 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 79181 distance : 1.255 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 79181 distance : 1.305 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 79181)



    (Position in Stellar Map of star HD 79181 and its Exoplanet HD 79181 b)



    (Zoomed position in Stellar Map of star HD 79181 and its Exoplanet HD 79181 b (zoom level 3))

    (Synthetic Spectrum of star HD 79181*)
    *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