Imaginary Picture of KOI-7209.01

Display orbital revolution of KOI-7209.01 around the hoststar 2MASS J19100257+4623238
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Exoplanet Name : KOI-7209.01
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.0760 (Rjup) 0.8519 (Rearth)
Mass (Mjup / Me): 0.0017 (Mjup) 0.5532 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0818 (AU) 0.0818 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0226
Orbital Period(Observed/Estimated) 8.26 (Days Obs.) 8.28 (Days Est.)
Surface Gravity (G Earth) 0.7624
Star Radiation at Atmospheric Boundary: 370763.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1101.3 (K)
Blackbody T 0.3(K) 1034.3 (K)
Blackbody T 0.7(K) 836.8 (K)
Tidally Locked Blackbody T 0.1(K) 1309.7 (K)
Tidally Locked Blackbody T 0.3(K) 1230.0 (K)
Size Class: Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : 2MASS J19100257+4623238
Alternate Name : 9640123
Star Distance(LY) : 3087.7
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6357 (K)
Spectral type : F7
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.2
Absolute Magnitude: 3.8
Apparent Magnitude: 13.7
Right Ascension(RA) 287.5107
Declination (DEC) 46.3899
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=2MASS+J19100257%2B4623238&submit=SIMBAD+search
Open Exoplanet Database Link
KOI-7209.01
KOI-7209.01

  • KOI-7209.01 is an exoplanet orbiting the star 2MASS J19100257+4623238, located about 3087.7 light-years (946.7 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star 2MASS J19100257+4623238 has apparent magnitude of 13.7, with absolute magnitude of 3.8.
  • It is 1.1 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 6357 with its spectral types of F7
  • In this planetary system, the extrasolar planet KOI-7209.01 orbits around the star 2MASS J19100257+4623238 every 8.3 days with its orbital distance of 0.08 AU ( 12237105.8 km)
  • (Projected orbit of KOI-7209.01 around its host star 2MASS J19100257+4623238)


  • The Star 2MASS J19100257+4623238 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.974 AU ( 145766491.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.347 AU ( 201487384.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.052 AU ( 307022184.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.020 AU ( 451796594.0 km)
  • Radiation at Planetary Boundary of KOI-7209.01 : 370763.85 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 2MASS J19100257+4623238)



  • Kopparapu Recent Venus for Star 2MASS J19100257+4623238 distance : 0.975 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star 2MASS J19100257+4623238 distance : 1.235 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 2MASS J19100257+4623238 distance : 1.193 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star 2MASS J19100257+4623238 distance : 1.307 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star 2MASS J19100257+4623238 distance : 2.153 AU
  • Kopparapu Outer Boundary for Early Mars for Star 2MASS J19100257+4623238 distance : 2.271 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star 2MASS J19100257+4623238)



  • Original Kopparapu Recent Venus for Star 2MASS J19100257+4623238 distance : 0.989 AU
  • Original Kopparapu Runaway Greenhouse for Star 2MASS J19100257+4623238 distance : 1.266 AU
  • Original Kopparapu Moist Greenhouse for Star 2MASS J19100257+4623238 distance : 1.308 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 2MASS J19100257+4623238 distance : 2.192 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star 2MASS J19100257+4623238 distance : 2.280 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star 2MASS J19100257+4623238)



    (Position in Stellar Map of star 2MASS J19100257+4623238 and its Exoplanet KOI-7209.01)



    (Zoomed position in Stellar Map of star 2MASS J19100257+4623238 and its Exoplanet KOI-7209.01 (zoom level 3))

    (Synthetic Spectrum of star 2MASS J19100257+4623238*)
    *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