Imaginary Picture of HIP 65891 b

Display orbital revolution of HIP 65891 b around the hoststar HIP 65891
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Exoplanet Name : HIP 65891 b
Alternate Name :
Status : Retracted
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 6.0000 (Mjup) 1907.6280 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.8100 (AU) 2.8100 (AU Est.)
Eccentricity : 0.1300
Orbital Period(Yrs) 2.9691
Orbital Period(Observed/Estimated) 1084.50 (Days Obs.) 1088.13 (Days Est.)
Surface Gravity (G Earth) 18.4226
Star Radiation at Atmospheric Boundary: 7740.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 418.6 (K)
Blackbody T 0.3(K) 393.1 (K)
Blackbody T 0.7(K) 318.1 (K)
Tidally Locked Blackbody T 0.1(K) 497.8 (K)
Tidally Locked Blackbody T 0.3(K) 467.5 (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 65891
Alternate Name :
Star Distance(LY) : 499.5
Stellar Radius(Rsun) : 8.9 (Rsun Measured)
Stellar Mass(Msun) : 2.5 (Msun Measured) 2.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5000 (K)
Spectral type : K0III
UV portion[%]: 3.2
Visible portion[%]: 37.1
IR portion[%]: 59.7
Metalicity : 0.2
Absolute Magnitude: 0.8
Apparent Magnitude: 6.8
Right Ascension(RA) 202.6053
Declination (DEC) -58.6644
Hubble Space Telescope Guide Star Catalog (GSC) ID 08674-00592
Discovered by
Discovery Paper - Authors "M. I. Jones, J. S. Jenkins, P. Rojo, C. H. F. melo"
Discovery Paper - Title Giant planets around two intermediate-mass evolved stars and confirmation of the planetary nature of HIP67851 c
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HIP+65891+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HIP%2065891%20b/
HIP 65891 b
HIP 65891 b

  • HIP 65891 b is an exoplanet orbiting the star HIP 65891, located about 499.5 light-years (153.1 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star HIP 65891 has apparent magnitude of 6.8, with absolute magnitude of 0.8.
  • It is 2.5 times more massive and 8.9 times bigger compared with our Sun. The surface temperature is 5000 with its spectral types of K0III
  • In this planetary system, the extrasolar planet HIP 65891 b orbits around the star HIP 65891 every 1084.5 days with its orbital distance of 2.81 AU ( 420370016.7 km)
  • (Projected orbit of HIP 65891 b around its host star HIP 65891)


  • The Star HIP 65891 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 4.836 AU ( 723518399.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 6.685 AU ( 1000091506.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 10.187 AU ( 1523918135.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 14.990 AU ( 2242512295.2 km)
  • Radiation at Planetary Boundary of HIP 65891 b : 7740.61 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HIP 65891)



  • Kopparapu Recent Venus for Star HIP 65891 distance : 5.232 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HIP 65891 distance : 6.624 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HIP 65891 distance : 6.398 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HIP 65891 distance : 7.021 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 65891 distance : 12.006 AU
  • Kopparapu Outer Boundary for Early Mars for Star HIP 65891 distance : 12.664 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HIP 65891)



  • Original Kopparapu Recent Venus for Star HIP 65891 distance : 5.177 AU
  • Original Kopparapu Runaway Greenhouse for Star HIP 65891 distance : 6.826 AU
  • Original Kopparapu Moist Greenhouse for Star HIP 65891 distance : 6.850 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 65891 distance : 12.208 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HIP 65891 distance : 12.695 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HIP 65891)



    (Position in Stellar Map of star HIP 65891 and its Exoplanet HIP 65891 b)



    (Zoomed position in Stellar Map of star HIP 65891 and its Exoplanet HIP 65891 b (zoom level 3))

    (Synthetic Spectrum of star HIP 65891*)
    *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