Imaginary Picture of HD 16417 b

Display orbital revolution of HD 16417 b around the hoststar HD 16417
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Exoplanet Name : HD 16417 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.2215 (Rjup) 2.4832 (Rearth)
Mass (Mjup / Me): 0.0529 (Mjup) 16.8189 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1400 (AU) 0.1400 (AU Est.)
Eccentricity : 0.2000
Orbital Period(Yrs) 0.0472
Orbital Period(Observed/Estimated) 17.24 (Days Obs.) 17.61 (Days Est.)
Surface Gravity (G Earth) 2.7276
Star Radiation at Atmospheric Boundary: 97723.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 789.1 (K)
Blackbody T 0.3(K) 741.1 (K)
Blackbody T 0.7(K) 599.6 (K)
Tidally Locked Blackbody T 0.1(K) 938.4 (K)
Tidally Locked Blackbody T 0.3(K) 881.3 (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 16417
Alternate Name :
Star Distance(LY) : 84.1
Stellar Radius(Rsun) : 1.1 (Rsun Estimated)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 4.3 (GY)
Temperature : 5936 (K)
Spectral type : G1V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.2
Absolute Magnitude: 3.7
Apparent Magnitude: 5.8
Right Ascension(RA) 39.2442
Declination (DEC) -34.5781
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+16417+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2016417%20b/
HD 16417 b
HD 16417 b

  • HD 16417 b is an exoplanet orbiting the star HD 16417, located about 84.1 light-years (25.8 pc) away from Solar System. Its discovery was publicly announced on 2009.
  • The host star HD 16417 has apparent magnitude of 5.8, with absolute magnitude of 3.7.
  • It is 1.2 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5936 with its spectral types of G1V
  • In this planetary system, the extrasolar planet HD 16417 b orbits around the star HD 16417 every 17.2 days with its orbital distance of 0.14 AU ( 20943701.9 km)
  • (Projected orbit of HD 16417 b around its host star HD 16417)


  • The Star HD 16417 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.856 AU ( 128080416.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.183 AU ( 177040607.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.803 AU ( 269770706.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.654 AU ( 396979411.8 km)
  • Radiation at Planetary Boundary of HD 16417 b : 97723.27 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 16417)



  • Kopparapu Recent Venus for Star HD 16417 distance : 0.879 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 16417 distance : 1.113 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 16417 distance : 1.075 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 16417 distance : 1.178 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 16417 distance : 1.958 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 16417 distance : 2.065 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 16417)



  • Original Kopparapu Recent Venus for Star HD 16417 distance : 0.883 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 16417 distance : 1.143 AU
  • Original Kopparapu Moist Greenhouse for Star HD 16417 distance : 1.168 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 16417 distance : 1.992 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 16417 distance : 2.072 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 16417)



    (Position in Stellar Map of star HD 16417 and its Exoplanet HD 16417 b)



    (Zoomed position in Stellar Map of star HD 16417 and its Exoplanet HD 16417 b (zoom level 3))

    (Synthetic Spectrum of star HD 16417*)
    *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