Imaginary Picture of HIP 34222 b

Display orbital revolution of HIP 34222 b around the hoststar HIP 34222
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Exoplanet Name : HIP 34222 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.8300 (Mjup) 263.8885 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.4920 (AU) 0.4920 (AU Est.)
Eccentricity : 0.3050
Orbital Period(Yrs) 0.4380
Orbital Period(Observed/Estimated) 159.99 (Days Obs.) 160.08 (Days Est.)
Surface Gravity (G Earth) 2.5485
Star Radiation at Atmospheric Boundary: 398.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 199.4 (K)
Blackbody T 0.3(K) 187.3 (K)
Blackbody T 0.7(K) 151.5 (K)
Tidally Locked Blackbody T 0.1(K) 237.1 (K)
Tidally Locked Blackbody T 0.3(K) 222.7 (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 34222
Alternate Name :
Star Distance(LY) : 74.5
Stellar Radius(Rsun) : 0.6 (Rsun Estimated)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4000 (K)
Spectral type : K7V
UV portion[%]: 0.7
Visible portion[%]: 23.8
IR portion[%]: 75.5
Metalicity : 0.0
Absolute Magnitude: 20.2
Apparent Magnitude: 22.0
Right Ascension(RA) 106.4250
Declination (DEC) 27.4708
Hubble Space Telescope Guide Star Catalog (GSC) ID 01903-01306
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+34222&submit=SIMBAD+search
Open Exoplanet Database Link
HIP 34222 b
HIP 34222 b

  • HIP 34222 b is an exoplanet orbiting the star HIP 34222, located about 74.5 light-years (22.9 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star HIP 34222 has apparent magnitude of 22.0, with absolute magnitude of 20.2.
  • It is 0.6 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 4000 with its spectral types of K7V
  • In this planetary system, the extrasolar planet HIP 34222 b orbits around the star HIP 34222 every 160.0 days with its orbital distance of 0.49 AU ( 73602152.4 km)
  • (Projected orbit of HIP 34222 b around its host star HIP 34222)


  • The Star HIP 34222 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.192 AU ( 28745149.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.266 AU ( 39733309.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.405 AU ( 60544770.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.596 AU ( 89094281.6 km)
  • Radiation at Planetary Boundary of HIP 34222 b : 398.55 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HIP 34222)



  • Kopparapu Recent Venus for Star HIP 34222 distance : 0.215 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HIP 34222 distance : 0.272 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HIP 34222 distance : 0.263 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HIP 34222 distance : 0.289 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 34222 distance : 0.517 AU
  • Kopparapu Outer Boundary for Early Mars for Star HIP 34222 distance : 0.545 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HIP 34222)



  • Original Kopparapu Recent Venus for Star HIP 34222 distance : 0.213 AU
  • Original Kopparapu Runaway Greenhouse for Star HIP 34222 distance : 0.282 AU
  • Original Kopparapu Moist Greenhouse for Star HIP 34222 distance : 0.281 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 34222 distance : 0.525 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HIP 34222 distance : 0.546 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HIP 34222)



    (Position in Stellar Map of star HIP 34222 and its Exoplanet HIP 34222 b)



    (Zoomed position in Stellar Map of star HIP 34222 and its Exoplanet HIP 34222 b (zoom level 3))

    (Synthetic Spectrum of star HIP 34222*)
    *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