Imaginary Picture of HD 4313 b

Display orbital revolution of HD 4313 b around the hoststar HD 4313
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Exoplanet Name : HD 4313 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.3000 (Mjup) 731.2574 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.1900 (AU) 1.1900 (AU Est.)
Eccentricity : 0.0410
Orbital Period(Yrs) 0.9746
Orbital Period(Observed/Estimated) 356.00 (Days Obs.) 361.53 (Days Est.)
Surface Gravity (G Earth) 7.0620
Star Radiation at Atmospheric Boundary: 13362.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 479.9 (K)
Blackbody T 0.3(K) 450.6 (K)
Blackbody T 0.7(K) 364.6 (K)
Tidally Locked Blackbody T 0.1(K) 570.7 (K)
Tidally Locked Blackbody T 0.3(K) 535.9 (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 4313
Alternate Name :
Star Distance(LY) : 431.4
Stellar Radius(Rsun) : 4.9 (Rsun Measured)
Stellar Mass(Msun) : 1.7 (Msun Measured) 1.8 (Msun Estimated)
Star Age : 2.0 (GY)
Temperature : 5035 (K)
Spectral type : G5 D
UV portion[%]: 3.5
Visible portion[%]: 37.5
IR portion[%]: 59.0
Metalicity : 0.1
Absolute Magnitude: 2.2
Apparent Magnitude: 7.8
Right Ascension(RA) 11.4182
Declination (DEC) 7.8450
Hubble Space Telescope Guide Star Catalog (GSC) ID 00604-01102
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+4313+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%204313%20b/
HD 4313 b
HD 4313 b

  • HD 4313 b is an exoplanet orbiting the star HD 4313, located about 431.4 light-years (132.3 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star HD 4313 has apparent magnitude of 7.8, with absolute magnitude of 2.2.
  • It is 1.7 times more massive and 4.9 times bigger compared with our Sun. The surface temperature is 5035 with its spectral types of G5 D
  • In this planetary system, the extrasolar planet HD 4313 b orbits around the star HD 4313 every 356.0 days with its orbital distance of 1.19 AU ( 178021466.1 km)
  • (Projected orbit of HD 4313 b around its host star HD 4313)


  • The Star HD 4313 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 2.691 AU ( 402580877.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 3.720 AU ( 556471979.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 5.668 AU ( 847940150.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 8.341 AU ( 1247781077.0 km)
  • Radiation at Planetary Boundary of HD 4313 b : 13362.91 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 4313)



  • Kopparapu Recent Venus for Star HD 4313 distance : 2.906 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 4313 distance : 3.680 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 4313 distance : 3.554 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 4313 distance : 3.900 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 4313 distance : 6.660 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 4313 distance : 7.025 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 4313)



  • Original Kopparapu Recent Venus for Star HD 4313 distance : 2.877 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 4313 distance : 3.791 AU
  • Original Kopparapu Moist Greenhouse for Star HD 4313 distance : 3.806 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 4313 distance : 6.772 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 4313 distance : 7.043 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 4313)



    (Position in Stellar Map of star HD 4313 and its Exoplanet HD 4313 b)



    (Zoomed position in Stellar Map of star HD 4313 and its Exoplanet HD 4313 b (zoom level 3))

    (Synthetic Spectrum of star HD 4313*)
    *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