Imaginary Picture of HD 75898 b

Display orbital revolution of HD 75898 b around the hoststar HD 75898
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Exoplanet Name : HD 75898 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.5100 (Mjup) 798.0244 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.1900 (AU) 1.1900 (AU Est.)
Eccentricity : 0.1000
Orbital Period(Yrs) 1.1449
Orbital Period(Observed/Estimated) 418.20 (Days Obs.) 419.09 (Days Est.)
Surface Gravity (G Earth) 7.7068
Star Radiation at Atmospheric Boundary: 2913.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 327.9 (K)
Blackbody T 0.3(K) 307.9 (K)
Blackbody T 0.7(K) 249.2 (K)
Tidally Locked Blackbody T 0.1(K) 389.9 (K)
Tidally Locked Blackbody T 0.3(K) 366.2 (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 75898
Alternate Name :
Star Distance(LY) : 250.7
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 3.8 (GY)
Temperature : 6021 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.3
Absolute Magnitude: 3.6
Apparent Magnitude: 8.0
Right Ascension(RA) 133.4617
Declination (DEC) 33.0569
Hubble Space Telescope Guide Star Catalog (GSC) ID 02488-00663
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.harvard.edu/simbad/sim-basic?Ident=HD+75898+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2075898%20b/
HD 75898 b
HD 75898 b

  • HD 75898 b is an exoplanet orbiting the star HD 75898, located about 250.7 light-years (76.9 pc) away from Solar System. Its discovery was publicly announced on 2007.
  • The host star HD 75898 has apparent magnitude of 8.0, with absolute magnitude of 3.6.
  • It is 1.3 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 6021 with its spectral types of G0
  • In this planetary system, the extrasolar planet HD 75898 b orbits around the star HD 75898 every 418.2 days with its orbital distance of 1.19 AU ( 178021466.1 km)
  • (Projected orbit of HD 75898 b around its host star HD 75898)


  • The Star HD 75898 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.257 AU ( 187981603.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.737 AU ( 259839701.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.647 AU ( 395938202.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.895 AU ( 582640409.8 km)
  • Radiation at Planetary Boundary of HD 75898 b : 2913.57 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 75898)



  • Kopparapu Recent Venus for Star HD 75898 distance : 1.283 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 75898 distance : 1.625 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 75898 distance : 1.570 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 75898 distance : 1.720 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 75898 distance : 2.853 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 75898 distance : 3.009 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 75898)



  • Original Kopparapu Recent Venus for Star HD 75898 distance : 1.291 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 75898 distance : 1.669 AU
  • Original Kopparapu Moist Greenhouse for Star HD 75898 distance : 1.709 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 75898 distance : 2.904 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 75898 distance : 3.019 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 75898)



    (Position in Stellar Map of star HD 75898 and its Exoplanet HD 75898 b)



    (Zoomed position in Stellar Map of star HD 75898 and its Exoplanet HD 75898 b (zoom level 3))

    (Synthetic Spectrum of star HD 75898*)
    *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