Imaginary Picture of HIP 75458 b

Display orbital revolution of HIP 75458 b around the hoststar HIP 75458
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Exoplanet Name : HIP 75458 b
Alternate Name : "iota Dra b, HD 137759 b"
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 16.4000 (Mjup) 5214.1832 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.4480 (AU) 1.4480 (AU Est.)
Eccentricity : 0.7008
Orbital Period(Yrs) 1.3986
Orbital Period(Observed/Estimated) 510.86 (Days Obs.) 537.87 (Days Est.)
Surface Gravity (G Earth) 50.3551
Star Radiation at Atmospheric Boundary: 37408.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 620.7 (K)
Blackbody T 0.3(K) 582.9 (K)
Blackbody T 0.7(K) 471.6 (K)
Tidally Locked Blackbody T 0.1(K) 738.1 (K)
Tidally Locked Blackbody T 0.3(K) 693.2 (K)
Size Class: Jupiter-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 : HIP 75458
Alternate Name :
Star Distance(LY) : 101.2
Stellar Radius(Rsun) : 12.8 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4445 (K)
Spectral type : K2 III
UV portion[%]: 1.4
Visible portion[%]: 30.2
IR portion[%]: 68.4
Metalicity : 0.1
Absolute Magnitude: 0.9
Apparent Magnitude: 3.3
Right Ascension(RA) 231.2324
Declination (DEC) 58.9658
Hubble Space Telescope Guide Star Catalog (GSC) ID 03875-01620
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HIP+75458++&submit=SIMBAD+search
Open Exoplanet Database Link 0
HIP 75458 b
HIP 75458 b

  • HIP 75458 b is an exoplanet orbiting the star HIP 75458, located about 101.2 light-years (31.0 pc) away from Solar System. Its discovery was publicly announced on 2002.
  • The host star HIP 75458 has apparent magnitude of 3.3, with absolute magnitude of 0.9.
  • It is 1.4 times more massive and 12.8 times bigger compared with our Sun. The surface temperature is 4445 with its spectral types of K2 III
  • In this planetary system, the extrasolar planet HIP 75458 b orbits around the star HIP 75458 every 510.9 days with its orbital distance of 1.45 AU ( 216617716.8 km)
  • (Projected orbit of HIP 75458 b around its host star HIP 75458)


  • The Star HIP 75458 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 5.479 AU ( 819618236.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 7.573 AU ( 1132926594.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 11.540 AU ( 1726329413.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 16.981 AU ( 2540369357.7 km)
  • Radiation at Planetary Boundary of HIP 75458 b : 37408.88 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HIP 75458)



  • Kopparapu Recent Venus for Star HIP 75458 distance : 6.063 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HIP 75458 distance : 7.675 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HIP 75458 distance : 7.413 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HIP 75458 distance : 8.142 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 75458 distance : 14.252 AU
  • Kopparapu Outer Boundary for Early Mars for Star HIP 75458 distance : 15.035 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HIP 75458)



  • Original Kopparapu Recent Venus for Star HIP 75458 distance : 5.982 AU
  • Original Kopparapu Runaway Greenhouse for Star HIP 75458 distance : 7.925 AU
  • Original Kopparapu Moist Greenhouse for Star HIP 75458 distance : 7.915 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 75458 distance : 14.484 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HIP 75458 distance : 15.063 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HIP 75458)



    (Position in Stellar Map of star HIP 75458 and its Exoplanet HIP 75458 b)



    (Zoomed position in Stellar Map of star HIP 75458 and its Exoplanet HIP 75458 b (zoom level 3))

    (Synthetic Spectrum of star HIP 75458*)
    *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