Imaginary Picture of HIP 97166 b

Display orbital revolution of HIP 97166 b around the hoststar HIP 97166
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Exoplanet Name : HIP 97166 b
Alternate Name : TOI-1255 b
Status : Confirmed
Radius (Rjup / Re): 0.2444 (Rjup) 2.7395 (Rearth)
Mass (Mjup / Me): 0.0630 (Mjup) 20.0301 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0890 (AU) 0.0890 (AU Est.)
Eccentricity : 0.1600
Orbital Period(Yrs) 0.0282
Orbital Period(Observed/Estimated) 10.29 (Days Obs.) 10.23 (Days Est.)
Surface Gravity (G Earth) 2.6690
Star Radiation at Atmospheric Boundary: 78991.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 748.2 (K)
Blackbody T 0.3(K) 702.7 (K)
Blackbody T 0.7(K) 568.5 (K)
Tidally Locked Blackbody T 0.1(K) 889.8 (K)
Tidally Locked Blackbody T 0.3(K) 835.6 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HIP 97166
Alternate Name :
Star Distance(LY) : 215.5
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 3.3 (GY)
Temperature : 5198 (K)
Spectral type : K0
UV portion[%]: 5.0
Visible portion[%]: 40.1
IR portion[%]: 54.9
Metalicity : 0.3
Absolute Magnitude: 17.9
Apparent Magnitude: 22.0
Right Ascension(RA) 296.2446
Declination (DEC) 74.0629
Hubble Space Telescope Guide Star Catalog (GSC) ID 04457-00836
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+97166&submit=SIMBAD+search
Open Exoplanet Database Link
HIP 97166 b
HIP 97166 b

  • HIP 97166 b is an exoplanet orbiting the star HIP 97166, located about 215.5 light-years (66.1 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star HIP 97166 has apparent magnitude of 22.0, with absolute magnitude of 17.9.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5198 with its spectral types of K0
  • In this planetary system, the extrasolar planet HIP 97166 b orbits around the star HIP 97166 every 10.3 days with its orbital distance of 0.09 AU ( 13314210.5 km)
  • (Projected orbit of HIP 97166 b around its host star HIP 97166)


  • The Star HIP 97166 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.489 AU ( 73204358.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.676 AU ( 101187554.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.031 AU ( 154187440.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.517 AU ( 226893572.4 km)
  • Radiation at Planetary Boundary of HIP 97166 b : 78991.88 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HIP 97166)



  • Kopparapu Recent Venus for Star HIP 97166 distance : 0.524 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HIP 97166 distance : 0.664 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HIP 97166 distance : 0.641 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HIP 97166 distance : 0.703 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 97166 distance : 1.194 AU
  • Kopparapu Outer Boundary for Early Mars for Star HIP 97166 distance : 1.259 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HIP 97166)



  • Original Kopparapu Recent Venus for Star HIP 97166 distance : 0.520 AU
  • Original Kopparapu Runaway Greenhouse for Star HIP 97166 distance : 0.683 AU
  • Original Kopparapu Moist Greenhouse for Star HIP 97166 distance : 0.688 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 97166 distance : 1.214 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HIP 97166 distance : 1.263 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HIP 97166)



    (Position in Stellar Map of star HIP 97166 and its Exoplanet HIP 97166 b)



    (Zoomed position in Stellar Map of star HIP 97166 and its Exoplanet HIP 97166 b (zoom level 3))

    (Synthetic Spectrum of star HIP 97166*)
    *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