Imaginary Picture of HD 5388 b

Display orbital revolution of HD 5388 b around the hoststar HD 5388
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Exoplanet Name : HD 5388 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 69.0000 (Mjup) 21937.7220 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.7600 (AU) 1.7600 (AU Est.)
Eccentricity : 0.4000
Orbital Period(Yrs) 2.1273
Orbital Period(Observed/Estimated) 777.00 (Days Obs.) 775.29 (Days Est.)
Surface Gravity (G Earth) 211.8599
Star Radiation at Atmospheric Boundary: 811.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 238.2 (K)
Blackbody T 0.3(K) 223.7 (K)
Blackbody T 0.7(K) 181.0 (K)
Tidally Locked Blackbody T 0.1(K) 283.3 (K)
Tidally Locked Blackbody T 0.3(K) 266.0 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Default
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 5388
Alternate Name :
Star Distance(LY) : 172.9
Stellar Radius(Rsun) : 1.1 (Rsun Estimated)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6297 (K)
Spectral type : F6V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.3
Absolute Magnitude: 3.2
Apparent Magnitude: 6.8
Right Ascension(RA) 13.7958
Declination (DEC) -47.4058
Hubble Space Telescope Guide Star Catalog (GSC) ID
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+5388&submit=SIMBAD+search
Open Exoplanet Database Link
HD 5388 b
HD 5388 b

  • HD 5388 b is an exoplanet orbiting the star HD 5388, located about 172.9 light-years (53.0 pc) away from Solar System. Its discovery was publicly announced on 2009.
  • The host star HD 5388 has apparent magnitude of 6.8, with absolute magnitude of 3.2.
  • It is 1.2 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 6297 with its spectral types of F6V
  • In this planetary system, the extrasolar planet HD 5388 b orbits around the star HD 5388 every 777.0 days with its orbital distance of 1.76 AU ( 263292252.4 km)
  • (Projected orbit of HD 5388 b around its host star HD 5388)


  • The Star HD 5388 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.981 AU ( 146736973.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.356 AU ( 202828844.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.066 AU ( 309066272.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.040 AU ( 454804559.9 km)
  • Radiation at Planetary Boundary of HD 5388 b : 811.60 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 5388)



  • Kopparapu Recent Venus for Star HD 5388 distance : 0.985 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 5388 distance : 1.248 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 5388 distance : 1.205 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 5388 distance : 1.320 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 5388 distance : 2.178 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 5388 distance : 2.297 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 5388)



  • Original Kopparapu Recent Venus for Star HD 5388 distance : 0.997 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 5388 distance : 1.280 AU
  • Original Kopparapu Moist Greenhouse for Star HD 5388 distance : 1.320 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 5388 distance : 2.217 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 5388 distance : 2.305 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 5388)



    (Position in Stellar Map of star HD 5388 and its Exoplanet HD 5388 b)



    (Zoomed position in Stellar Map of star HD 5388 and its Exoplanet HD 5388 b (zoom level 3))

    (Synthetic Spectrum of star HD 5388*)
    *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