Imaginary Picture of HD 41004 A b

Display orbital revolution of HD 41004 A b around the hoststar HD 41004 A
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Exoplanet Name : HD 41004 A b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.5400 (Mjup) 807.5625 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.6400 (AU) 1.6400 (AU Est.)
Eccentricity : 0.3900
Orbital Period(Yrs) 2.6365
Orbital Period(Observed/Estimated) 963.00 (Days Obs.) 916.87 (Days Est.)
Surface Gravity (G Earth) 7.7989
Star Radiation at Atmospheric Boundary: 109.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 144.3 (K)
Blackbody T 0.3(K) 135.5 (K)
Blackbody T 0.7(K) 109.6 (K)
Tidally Locked Blackbody T 0.1(K) 171.6 (K)
Tidally Locked Blackbody T 0.3(K) 161.1 (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 41004 A
Alternate Name :
Star Distance(LY) : 138.6
Stellar Radius(Rsun) : 0.6 (Rsun Estimated)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 1.6 (GY)
Temperature : 5035 (K)
Spectral type : K1 V
UV portion[%]: 3.5
Visible portion[%]: 37.5
IR portion[%]: 59.0
Metalicity : -0.1
Absolute Magnitude: 5.5
Apparent Magnitude: 8.7
Right Ascension(RA) 89.9569
Declination (DEC) -48.2394
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+41004+A+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2041004%20A%20b/
HD 41004 A b
HD 41004 A b

  • HD 41004 A b is an exoplanet orbiting the star HD 41004 A, located about 138.6 light-years (42.5 pc) away from Solar System. Its discovery was publicly announced on 2004.
  • The host star HD 41004 A has apparent magnitude of 8.7, with absolute magnitude of 5.5.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 5035 with its spectral types of K1 V
  • In this planetary system, the extrasolar planet HD 41004 A b orbits around the star HD 41004 A every 963.0 days with its orbital distance of 1.64 AU ( 245340507.9 km)
  • (Projected orbit of HD 41004 A b around its host star HD 41004 A)


  • The Star HD 41004 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.335 AU ( 50150898.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.463 AU ( 69321647.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.706 AU ( 105630849.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.039 AU ( 155440423.0 km)
  • Radiation at Planetary Boundary of HD 41004 A b : 109.18 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 41004 A)



  • Kopparapu Recent Venus for Star HD 41004 A distance : 0.362 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 41004 A distance : 0.458 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 41004 A distance : 0.443 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 41004 A distance : 0.486 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 41004 A distance : 0.830 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 41004 A distance : 0.875 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 41004 A)



  • Original Kopparapu Recent Venus for Star HD 41004 A distance : 0.358 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 41004 A distance : 0.472 AU
  • Original Kopparapu Moist Greenhouse for Star HD 41004 A distance : 0.474 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 41004 A distance : 0.844 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 41004 A distance : 0.877 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 41004 A)



    (Position in Stellar Map of star HD 41004 A and its Exoplanet HD 41004 A b)



    (Zoomed position in Stellar Map of star HD 41004 A and its Exoplanet HD 41004 A b (zoom level 3))

    (Synthetic Spectrum of star HD 41004 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