Imaginary Picture of HIP 89474 b

Display orbital revolution of HIP 89474 b around the hoststar HIP 89474
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Exoplanet Name : HIP 89474 b
Alternate Name : HD 168009 b
Status : Confirmed
Radius (Rjup / Re): 0.1604 (Rjup) 1.7978 (Rearth)
Mass (Mjup / Me): 0.0299 (Mjup) 9.5063 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1192 (AU) 0.1192 (AU Est.)
Eccentricity : 0.1210
Orbital Period(Yrs) 0.0415
Orbital Period(Observed/Estimated) 15.15 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 2.9413
Star Radiation at Atmospheric Boundary: 105816.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 805.0 (K)
Blackbody T 0.3(K) 756.0 (K)
Blackbody T 0.7(K) 611.6 (K)
Tidally Locked Blackbody T 0.1(K) 957.3 (K)
Tidally Locked Blackbody T 0.3(K) 899.0 (K)
Size Class: super-Earth-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 89474
Alternate Name : HD 168009
Star Distance(LY) : 76.0
Stellar Radius(Rsun) : 1.0 (Rsun Estimated)
Stellar Mass(Msun) : 0.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5930 (K)
Spectral type : G1V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 20.2
Apparent Magnitude: 22.0
Right Ascension(RA) 273.8833
Declination (DEC) 45.2094
Hubble Space Telescope Guide Star Catalog (GSC) ID 03525-00186
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=HIP+89474&submit=SIMBAD+search
Open Exoplanet Database Link
HIP 89474 b
HIP 89474 b

  • HIP 89474 b is an exoplanet orbiting the star HIP 89474, located about 76.0 light-years (23.3 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star HIP 89474 has apparent magnitude of 22.0, with absolute magnitude of 20.2.
  • In this planetary system, the extrasolar planet HIP 89474 b orbits around the star HIP 89474 every 15.1 days with its orbital distance of 0.12 AU ( 17832066.2 km)
  • (Projected orbit of HIP 89474 b around its host star HIP 89474)


  • The Star HIP 89474 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.759 AU ( 113477440.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.049 AU ( 156855477.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.598 AU ( 239013035.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.351 AU ( 351718152.2 km)
  • Radiation at Planetary Boundary of HIP 89474 b : 105816.92 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HIP 89474)



  • Kopparapu Recent Venus for Star HIP 89474 distance : 0.779 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HIP 89474 distance : 0.987 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HIP 89474 distance : 0.953 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HIP 89474 distance : 1.044 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 89474 distance : 1.735 AU
  • Kopparapu Outer Boundary for Early Mars for Star HIP 89474 distance : 1.830 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HIP 89474)



  • Original Kopparapu Recent Venus for Star HIP 89474 distance : 0.782 AU
  • Original Kopparapu Runaway Greenhouse for Star HIP 89474 distance : 1.013 AU
  • Original Kopparapu Moist Greenhouse for Star HIP 89474 distance : 1.035 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 89474 distance : 1.766 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HIP 89474 distance : 1.837 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HIP 89474)



    (Position in Stellar Map of star HIP 89474 and its Exoplanet HIP 89474 b)



    (Zoomed position in Stellar Map of star HIP 89474 and its Exoplanet HIP 89474 b (zoom level 3))

    (Synthetic Spectrum of star HIP 89474*)
    *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