Imaginary Picture of HIP 17157 b

Display orbital revolution of HIP 17157 b around the hoststar HIP 17157
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Exoplanet Name : HIP 17157 b
Alternate Name : CD-48 1042 b
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 47.8180 (Mjup) 15203.1593 (Mearth)
Semi Major Axis / Orbital Distance Calculated 13.7280 (AU) 13.7280 (AU Est.)
Eccentricity : 0.3230
Orbital Period(Yrs) 61.0951
Orbital Period(Observed/Estimated) 22315.60 (Days Obs.) 22868.05 (Days Est.)
Surface Gravity (G Earth) 146.8220
Star Radiation at Atmospheric Boundary: 1.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 46.6 (K)
Blackbody T 0.3(K) 43.7 (K)
Blackbody T 0.7(K) 35.4 (K)
Tidally Locked Blackbody T 0.1(K) 55.4 (K)
Tidally Locked Blackbody T 0.3(K) 52.0 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : "Radial Velocity, Astrometry"
Mass Detection : Astrometry
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HIP 17157
Alternate Name : CD-48 1042
Star Distance(LY) : 83.5
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4220 (K)
Spectral type : K7V
UV portion[%]: 0.9
Visible portion[%]: 27.0
IR portion[%]: 72.1
Metalicity : 0.0
Absolute Magnitude: 7.9
Apparent Magnitude: 9.9
Right Ascension(RA) 55.1224
Declination (DEC) -47.9252
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
HIP 17157 b
HIP 17157 b

  • HIP 17157 b is an exoplanet orbiting the star HIP 17157, located about 83.5 light-years (25.6 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star HIP 17157 has apparent magnitude of 9.9, with absolute magnitude of 7.9.
  • It is 0.7 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4220 with its spectral types of K7V
  • In this planetary system, the extrasolar planet HIP 17157 b orbits around the star HIP 17157 every 22315.6 days with its orbital distance of 13.73 AU ( 2053679569.0 km)
  • (Projected orbit of HIP 17157 b around its host star HIP 17157)


  • The Star HIP 17157 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.292 AU ( 43747397.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.404 AU ( 60470335.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.616 AU ( 92143409.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.906 AU ( 135593063.5 km)
  • Radiation at Planetary Boundary of HIP 17157 b : 1.19 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HIP 17157)



  • Kopparapu Recent Venus for Star HIP 17157 distance : 0.326 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HIP 17157 distance : 0.412 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HIP 17157 distance : 0.398 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HIP 17157 distance : 0.438 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 17157 distance : 0.774 AU
  • Kopparapu Outer Boundary for Early Mars for Star HIP 17157 distance : 0.817 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HIP 17157)



  • Original Kopparapu Recent Venus for Star HIP 17157 distance : 0.322 AU
  • Original Kopparapu Runaway Greenhouse for Star HIP 17157 distance : 0.426 AU
  • Original Kopparapu Moist Greenhouse for Star HIP 17157 distance : 0.425 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 17157 distance : 0.787 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HIP 17157 distance : 0.818 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HIP 17157)



    (Position in Stellar Map of star HIP 17157 and its Exoplanet HIP 17157 b)



    (Zoomed position in Stellar Map of star HIP 17157 and its Exoplanet HIP 17157 b (zoom level 3))

    (Synthetic Spectrum of star HIP 17157*)
    *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