Imaginary Picture of HD 43691 A b

Display orbital revolution of HD 43691 A b around the hoststar HD 43691 A
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Exoplanet Name : HD 43691 A b
Alternate Name : HD 43691 b
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.5700 (Mjup) 817.1007 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2380 (AU) 0.2380 (AU Est.)
Eccentricity : 0.0850
Orbital Period(Yrs) 0.1013
Orbital Period(Observed/Estimated) 37.00 (Days Obs.) 36.10 (Days Est.)
Surface Gravity (G Earth) 7.8910
Star Radiation at Atmospheric Boundary: 49153.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 664.6 (K)
Blackbody T 0.3(K) 624.1 (K)
Blackbody T 0.7(K) 505.0 (K)
Tidally Locked Blackbody T 0.1(K) 790.3 (K)
Tidally Locked Blackbody T 0.3(K) 742.2 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 43691 A
Alternate Name : HD 43691
Star Distance(LY) : 278.1
Stellar Radius(Rsun) : 1.2 (Rsun Estimated)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 2.8 (GY)
Temperature : 6200 (K)
Spectral type : G0IV
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.3
Absolute Magnitude: 3.4
Apparent Magnitude: 8.0
Right Ascension(RA) 94.8945
Declination (DEC) 41.0922
Hubble Space Telescope Guide Star Catalog (GSC) ID 02930-02105
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.harvard.edu/simbad/sim-basic?Ident=HD+43691+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2043691%20b/
HD 43691 A b
HD 43691 A b

  • HD 43691 A b is an exoplanet orbiting the star HD 43691 A, located about 278.1 light-years (85.3 pc) away from Solar System. Its discovery was publicly announced on 2007.
  • The host star HD 43691 A has apparent magnitude of 8.0, with absolute magnitude of 3.4.
  • It is 1.4 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 6200 with its spectral types of G0IV
  • In this planetary system, the extrasolar planet HD 43691 A b orbits around the star HD 43691 A every 37.0 days with its orbital distance of 0.24 AU ( 35604293.2 km)
  • (Projected orbit of HD 43691 A b around its host star HD 43691 A)


  • The Star HD 43691 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.032 AU ( 154421916.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.427 AU ( 213451444.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.174 AU ( 325252764.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.199 AU ( 478623690.9 km)
  • Radiation at Planetary Boundary of HD 43691 A b : 49153.29 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 43691 A)



  • Kopparapu Recent Venus for Star HD 43691 A distance : 1.043 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 43691 A distance : 1.321 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 43691 A distance : 1.275 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 43691 A distance : 1.398 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 43691 A distance : 2.309 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 43691 A distance : 2.436 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 43691 A)



  • Original Kopparapu Recent Venus for Star HD 43691 A distance : 1.054 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 43691 A distance : 1.355 AU
  • Original Kopparapu Moist Greenhouse for Star HD 43691 A distance : 1.394 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 43691 A distance : 2.351 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 43691 A distance : 2.445 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 43691 A)



    (Position in Stellar Map of star HD 43691 A and its Exoplanet HD 43691 A b)



    (Zoomed position in Stellar Map of star HD 43691 A and its Exoplanet HD 43691 A b (zoom level 3))

    (Synthetic Spectrum of star HD 43691 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