Imaginary Picture of Kepler-210 b

Display orbital revolution of Kepler-210 b around the hoststar Kepler-210
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Exoplanet Name : Kepler-210 b
Alternate Name : "2MASS J19300081+4304593 b, K00676.02, KIC 7447200 b, KOI-676 b, KOI-676.02, WISE J193000.81+430459.5 b"
Status : Confirmed
Radius (Rjup / Re): 0.2620 (Rjup) 2.9368 (Rearth)
Mass (Mjup / Me): 0.0226 (Mjup) 7.1851 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0320 (AU) 0.0320 (AU Est.)
Eccentricity : 0.4400
Orbital Period(Yrs) 0.0067
Orbital Period(Observed/Estimated) 2.45 (Days Obs.) 2.63 (Days Est.)
Surface Gravity (G Earth) 0.8331
Star Radiation at Atmospheric Boundary: 140086.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 863.5 (K)
Blackbody T 0.3(K) 810.9 (K)
Blackbody T 0.7(K) 656.1 (K)
Tidally Locked Blackbody T 0.1(K) 1026.8 (K)
Tidally Locked Blackbody T 0.3(K) 964.3 (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-210
Alternate Name : "2MASS J19300081+4304593, KIC 7447200, KOI-676, WISE J193000.81+430459.5"
Star Distance(LY) : 759.0
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3914 (K)
Spectral type : M0 V
UV portion[%]: 0.6
Visible portion[%]: 22.2
IR portion[%]: 77.2
Metalicity : 0.0
Absolute Magnitude: 7.6
Apparent Magnitude: 14.4
Right Ascension(RA) 292.5034
Declination (DEC) 43.0831
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "P. Ioannidis , J.H.M.M. Schmitt , Ch. Avdellidou , C. von Essen and E. Agol"
Discovery Paper - Title Kepler-210: An active star with at least two planets.
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-210+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-210%20b/
Kepler-210 b
Kepler-210 b

  • Kepler-210 b is an exoplanet orbiting the star Kepler-210, located about 759.0 light-years (232.7 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-210 has apparent magnitude of 14.4, with absolute magnitude of 7.6.
  • It is 0.6 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 3914 with its spectral types of M0 V
  • In this planetary system, the extrasolar planet Kepler-210 b orbits around the star Kepler-210 every 2.5 days with its orbital distance of 0.03 AU ( 4787131.9 km)
  • (Projected orbit of Kepler-210 b around its host star Kepler-210)


  • The Star Kepler-210 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.234 AU ( 35051326.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.324 AU ( 48450093.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.494 AU ( 73827219.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.726 AU ( 108639988.0 km)
  • Radiation at Planetary Boundary of Kepler-210 b : 140086.91 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-210)



  • Kopparapu Recent Venus for Star Kepler-210 distance : 0.263 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-210 distance : 0.333 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-210 distance : 0.321 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-210 distance : 0.353 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-210 distance : 0.634 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-210 distance : 0.669 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-210)



  • Original Kopparapu Recent Venus for Star Kepler-210 distance : 0.260 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-210 distance : 0.344 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-210 distance : 0.344 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-210 distance : 0.644 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-210 distance : 0.670 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-210)



    (Position in Stellar Map of star Kepler-210 and its Exoplanet Kepler-210 b)



    (Zoomed position in Stellar Map of star Kepler-210 and its Exoplanet Kepler-210 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-210*)
    *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