Imaginary Picture of Kepler-170 b

Display orbital revolution of Kepler-170 b around the hoststar Kepler-170
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Exoplanet Name : Kepler-170 b
Alternate Name : "2MASS J18580508+4137465 b, K00508.01, KIC 6266741 b, KOI-508 b, KOI-508.01, WISE J185805.08+413746.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.2850 (Rjup) 3.1946 (Rearth)
Mass (Mjup / Me): 0.0244 (Mjup) 7.7699 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0800 (AU) 0.0800 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0217
Orbital Period(Observed/Estimated) 7.93 (Days Obs.) 8.31 (Days Est.)
Surface Gravity (G Earth) 0.7614
Star Radiation at Atmospheric Boundary: 186315.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 927.3 (K)
Blackbody T 0.3(K) 870.8 (K)
Blackbody T 0.7(K) 704.6 (K)
Tidally Locked Blackbody T 0.1(K) 1102.7 (K)
Tidally Locked Blackbody T 0.3(K) 1035.6 (K)
Size Class: 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-170
Alternate Name : "2MASS J18580508+4137465, KIC 6266741, KOI-508, WISE J185805.08+413746.6"
Star Distance(LY) : 2408.5
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5573 (K)
Spectral type : G5
UV portion[%]: 7.5
Visible portion[%]: 44.3
IR portion[%]: 48.1
Metalicity : 0.2
Absolute Magnitude: 3.8
Apparent Magnitude: 13.1
Right Ascension(RA) 284.5212
Declination (DEC) 41.6296
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-170+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-170%20b/
Kepler-170 b
Kepler-170 b

  • Kepler-170 b is an exoplanet orbiting the star Kepler-170, located about 2408.5 light-years (738.5 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-170 has apparent magnitude of 13.1, with absolute magnitude of 3.8.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5573 with its spectral types of G5
  • In this planetary system, the extrasolar planet Kepler-170 b orbits around the star Kepler-170 every 7.9 days with its orbital distance of 0.08 AU ( 11967829.7 km)
  • (Projected orbit of Kepler-170 b around its host star Kepler-170)


  • The Star Kepler-170 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.676 AU ( 101057816.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.934 AU ( 139688312.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.423 AU ( 212854074.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.094 AU ( 313224095.8 km)
  • Radiation at Planetary Boundary of Kepler-170 b : 186315.26 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-170)



  • Kopparapu Recent Venus for Star Kepler-170 distance : 0.709 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-170 distance : 0.897 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-170 distance : 0.867 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-170 distance : 0.951 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-170 distance : 1.594 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-170 distance : 1.681 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-170)



  • Original Kopparapu Recent Venus for Star Kepler-170 distance : 0.707 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-170 distance : 0.923 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-170 distance : 0.935 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-170 distance : 1.622 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-170 distance : 1.687 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-170)



    (Position in Stellar Map of star Kepler-170 and its Exoplanet Kepler-170 b)



    (Zoomed position in Stellar Map of star Kepler-170 and its Exoplanet Kepler-170 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-170*)
    *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