Imaginary Picture of Kepler-1639 b

Display orbital revolution of Kepler-1639 b around the hoststar Kepler-1639
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Exoplanet Name : Kepler-1639 b
Alternate Name : "2MASS J18521647+4848075 b, K05875.01, KIC 11176166 b, KOI-5875 b, KOI-5875.01, WISE J185216.47+484807.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.2300 (Rjup) 2.5781 (Rearth)
Mass (Mjup / Me): 0.0200 (Mjup) 6.3653 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0936 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0270
Orbital Period(Observed/Estimated) 9.88 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.9577
Star Radiation at Atmospheric Boundary: 254424.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1002.4 (K)
Blackbody T 0.3(K) 941.3 (K)
Blackbody T 0.7(K) 761.6 (K)
Tidally Locked Blackbody T 0.1(K) 1192.0 (K)
Tidally Locked Blackbody T 0.3(K) 1119.4 (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-1639
Alternate Name : "2MASS J18521647+4848075, KIC 11176166, KOI-5875, WISE J185216.47+484807.6"
Star Distance(LY) : 3362.8
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 3.2 (GY)
Temperature : 6480 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.0
Absolute Magnitude: 3.4
Apparent Magnitude: 13.5
Right Ascension(RA) 283.0686
Declination (DEC) 48.8021
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton, Stephen T. Bryson, Jeffrey L. Coughlin, Jason F. Rowe, Ganesh Ravichandran, Erik A. Petigura, Michael R. Haas, and Natalie M. Batalha2"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 428 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1639&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1639%20b/
Kepler-1639 b
Kepler-1639 b

  • Kepler-1639 b is an exoplanet orbiting the star Kepler-1639, located about 3362.8 light-years (1031.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1639 has apparent magnitude of 13.5, with absolute magnitude of 3.4.
  • It is 1.1 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 6480 with its spectral types of G0
  • In this planetary system, the extrasolar planet Kepler-1639 b orbits around the star Kepler-1639 every 9.9 days with its orbital distance of 0.09 AU ( 13997959.9 km)
  • (Projected orbit of Kepler-1639 b around its host star Kepler-1639)


  • The Star Kepler-1639 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.923 AU ( 138125596.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.276 AU ( 190925670.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.945 AU ( 290928470.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.862 AU ( 428113989.3 km)
  • Radiation at Planetary Boundary of Kepler-1639 b : 254424.10 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1639)



  • Kopparapu Recent Venus for Star Kepler-1639 distance : 0.917 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1639 distance : 1.162 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1639 distance : 1.122 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1639 distance : 1.229 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1639 distance : 2.022 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1639 distance : 2.132 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1639)



  • Original Kopparapu Recent Venus for Star Kepler-1639 distance : 0.933 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1639 distance : 1.191 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1639 distance : 1.234 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1639 distance : 2.058 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1639 distance : 2.140 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1639)



    (Position in Stellar Map of star Kepler-1639 and its Exoplanet Kepler-1639 b)



    (Zoomed position in Stellar Map of star Kepler-1639 and its Exoplanet Kepler-1639 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1639*)
    *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