Imaginary Picture of HIP 38594 b

Display orbital revolution of HIP 38594 b around the hoststar HIP 38594
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Exoplanet Name : HIP 38594 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.1541 (Rjup) 1.7274 (Rearth)
Mass (Mjup / Me): 0.0255 (Mjup) 8.1074 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2560 (AU) 0.2560 (AU Est.)
Eccentricity : 0.1700
Orbital Period(Yrs) 0.1662
Orbital Period(Observed/Estimated) 60.72 (Days Obs.) 47.79 (Days Est.)
Surface Gravity (G Earth) 2.7171
Star Radiation at Atmospheric Boundary: 1668.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 285.2 (K)
Blackbody T 0.3(K) 267.9 (K)
Blackbody T 0.7(K) 216.7 (K)
Tidally Locked Blackbody T 0.1(K) 339.2 (K)
Tidally Locked Blackbody T 0.3(K) 318.6 (K)
Size Class: super-Earth-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Habitable
Star Name : HIP 38594
Alternate Name :
Star Distance(LY) : 58.0
Stellar Radius(Rsun) : 0.7 (Rsun Estimated)
Stellar Mass(Msun) : 1.0 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3750 (K)
Spectral type : M0
UV portion[%]: 0.4
Visible portion[%]: 18.9
IR portion[%]: 80.7
Metalicity : 0.0
Absolute Magnitude: 8.4
Apparent Magnitude: 9.7
Right Ascension(RA) 118.5453
Declination (DEC) -25.3031
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HIP+38594+&submit=SIMBAD+search
Open Exoplanet Database Link
HIP 38594 b
HIP 38594 b

  • HIP 38594 b is an exoplanet orbiting the star HIP 38594, located about 58.0 light-years (17.8 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star HIP 38594 has apparent magnitude of 9.7, with absolute magnitude of 8.4.
  • It is 1.0 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 3750 with its spectral types of M0
  • In this planetary system, the extrasolar planet HIP 38594 b orbits around the star HIP 38594 every 60.7 days with its orbital distance of 0.26 AU ( 38297054.9 km)
  • (Projected orbit of HIP 38594 b around its host star HIP 38594)


  • The Star HIP 38594 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.205 AU ( 30602589.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.283 AU ( 42300776.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.431 AU ( 64457022.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.634 AU ( 94851331.9 km)
  • Radiation at Planetary Boundary of HIP 38594 b : 1668.50 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HIP 38594)



  • Kopparapu Recent Venus for Star HIP 38594 distance : 0.230 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HIP 38594 distance : 0.291 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HIP 38594 distance : 0.281 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HIP 38594 distance : 0.310 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 38594 distance : 0.560 AU
  • Kopparapu Outer Boundary for Early Mars for Star HIP 38594 distance : 0.591 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HIP 38594)



  • Original Kopparapu Recent Venus for Star HIP 38594 distance : 0.228 AU
  • Original Kopparapu Runaway Greenhouse for Star HIP 38594 distance : 0.302 AU
  • Original Kopparapu Moist Greenhouse for Star HIP 38594 distance : 0.302 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 38594 distance : 0.569 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HIP 38594 distance : 0.592 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HIP 38594)



    (Position in Stellar Map of star HIP 38594 and its Exoplanet HIP 38594 b)



    (Zoomed position in Stellar Map of star HIP 38594 and its Exoplanet HIP 38594 b (zoom level 3))

    (Synthetic Spectrum of star HIP 38594*)
    *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