Imaginary Picture of KOI-6653 b

Display orbital revolution of KOI-6653 b around the hoststar 2MASS J19303502+4121109
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Exoplanet Name : KOI-6653 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.1090 (Rjup) 1.2218 (Rearth)
Mass (Mjup / Me): 0.0063 (Mjup) 2.0133 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1779 (AU) 0.1779 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0774
Orbital Period(Observed/Estimated) 28.27 (Days Obs.) 28.28 (Days Est.)
Surface Gravity (G Earth) 1.3487
Star Radiation at Atmospheric Boundary: 24827.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 560.2 (K)
Blackbody T 0.3(K) 526.1 (K)
Blackbody T 0.7(K) 425.7 (K)
Tidally Locked Blackbody T 0.1(K) 666.2 (K)
Tidally Locked Blackbody T 0.3(K) 625.7 (K)
Size Class: super-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 J19303502+4121109
Alternate Name : 6045093
Star Distance(LY) : 2562.1
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5496 (K)
Spectral type : G7
UV portion[%]: 6.9
Visible portion[%]: 43.2
IR portion[%]: 49.9
Metalicity : 0.0
Absolute Magnitude: 5.2
Apparent Magnitude: 14.7
Right Ascension(RA) 292.6459
Declination (DEC) 41.3530
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+J19303502%2B4121109&submit=SIMBAD+search
Open Exoplanet Database Link
KOI-6653 b
KOI-6653 b

  • KOI-6653 b is an exoplanet orbiting the star 2MASS J19303502+4121109, located about 2562.1 light-years (785.5 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star 2MASS J19303502+4121109 has apparent magnitude of 14.7, with absolute magnitude of 5.2.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5496 with its spectral types of G7
  • In this planetary system, the extrasolar planet KOI-6653 b orbits around the star 2MASS J19303502+4121109 every 28.3 days with its orbital distance of 0.18 AU ( 26613461.2 km)
  • (Projected orbit of KOI-6653 b around its host star 2MASS J19303502+4121109)


  • The Star 2MASS J19303502+4121109 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.548 AU ( 82034319.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.758 AU ( 113392867.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.155 AU ( 172785636.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.700 AU ( 254261633.1 km)
  • Radiation at Planetary Boundary of KOI-6653 b : 24827.21 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 2MASS J19303502+4121109)



  • Kopparapu Recent Venus for Star 2MASS J19303502+4121109 distance : 0.578 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star 2MASS J19303502+4121109 distance : 0.732 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 2MASS J19303502+4121109 distance : 0.707 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star 2MASS J19303502+4121109 distance : 0.775 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star 2MASS J19303502+4121109 distance : 1.303 AU
  • Kopparapu Outer Boundary for Early Mars for Star 2MASS J19303502+4121109 distance : 1.374 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star 2MASS J19303502+4121109)



  • Original Kopparapu Recent Venus for Star 2MASS J19303502+4121109 distance : 0.576 AU
  • Original Kopparapu Runaway Greenhouse for Star 2MASS J19303502+4121109 distance : 0.753 AU
  • Original Kopparapu Moist Greenhouse for Star 2MASS J19303502+4121109 distance : 0.762 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 2MASS J19303502+4121109 distance : 1.325 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star 2MASS J19303502+4121109 distance : 1.378 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star 2MASS J19303502+4121109)



    (Position in Stellar Map of star 2MASS J19303502+4121109 and its Exoplanet KOI-6653 b)



    (Zoomed position in Stellar Map of star 2MASS J19303502+4121109 and its Exoplanet KOI-6653 b (zoom level 3))

    (Synthetic Spectrum of star 2MASS J19303502+4121109*)
    *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