Imaginary Picture of Kepler-172 b

Display orbital revolution of Kepler-172 b around the hoststar Kepler-172
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Exoplanet Name : Kepler-172 b
Alternate Name : "2MASS J18532841+4149186 b, K00510.01, KIC 6422155 b, KOI-510 b, KOI-510.01, WISE J185328.40+414919.0 b"
Radius (Rjup / Re): 0.2100 (Rjup) 2.3539 (Rearth)
Mass (Mjup / Me): 0.0184 (Mjup) 5.8489 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0400 (AU) 0.0400 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0080
Orbital Period(Observed/Estimated) 2.94 (Days Obs.) 3.15 (Days Est.)
Surface Gravity (G Earth) 1.0556
Star Radiation at Atmospheric Boundary: 859669.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1359.0 (K)
Blackbody T 0.3(K) 1276.3 (K)
Blackbody T 0.7(K) 1032.6 (K)
Tidally Locked Blackbody T 0.1(K) 1616.2 (K)
Tidally Locked Blackbody T 0.3(K) 1517.7 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-172
Alternate Name : "2MASS J18532841+4149186, KIC 6422155, KOI-510, WISE J185328.40+414919.0"
Star Distance(LY) : 2702.9
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5613 (K)
Spectral type : G7
UV portion[%]: 7.0
Visible portion[%]: 43.4
IR portion[%]: 49.6
Metalicity : 0.0
Absolute Magnitude: 3.6
Apparent Magnitude: 13.2
Right Ascension(RA) 283.3684
Declination (DEC) 41.8219
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-172+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-172%20b/
Kepler-172 b
Kepler-172 b

  • Kepler-172 b is an exoplanet orbiting the star Kepler-172, located about 2702.9 light-years (828.7 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-172 has apparent magnitude of 13.2, with absolute magnitude of 3.6.
  • It is 0.9 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5613 with its spectral types of G7
  • In this planetary system, the extrasolar planet Kepler-172 b orbits around the star Kepler-172 every 2.9 days with its orbital distance of 0.04 AU ( 5983914.8 km)
  • (Projected orbit of Kepler-172 b around its host star Kepler-172)


  • The Star Kepler-172 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.726 AU ( 108537911.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.003 AU ( 150027758.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.528 AU ( 228609102.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.249 AU ( 336408309.2 km)
  • Radiation at Planetary Boundary of Kepler-172 b : 859669.51 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-172)



  • Kopparapu Recent Venus for Star Kepler-172 distance : 0.759 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-172 distance : 0.962 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-172 distance : 0.929 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-172 distance : 1.018 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-172 distance : 1.706 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-172 distance : 1.799 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-172)



  • Original Kopparapu Recent Venus for Star Kepler-172 distance : 0.758 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-172 distance : 0.989 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-172 distance : 1.003 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-172 distance : 1.736 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-172 distance : 1.805 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-172)



    (Position in Stellar Map of star Kepler-172 and its Exoplanet Kepler-172 b)



    (Zoomed position in Stellar Map of star Kepler-172 and its Exoplanet Kepler-172 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-172*)
    *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