Imaginary Picture of Kepler-868 b

Display orbital revolution of Kepler-868 b around the hoststar Kepler-868
/
Exoplanet Name : Kepler-868 b
Alternate Name : "2MASS J18492724+4640308 b, K01505.01, KIC 9813499 b, KOI-1505 b, KOI-1505.01, WISE J184927.24+464030.8 b"
Status : Confirmed
Radius (Rjup / Re): 0.1830 (Rjup) 2.0512 (Rearth)
Mass (Mjup / Me): 0.0162 (Mjup) 5.1462 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0561 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0138
Orbital Period(Observed/Estimated) 5.03 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.2231
Star Radiation at Atmospheric Boundary: 599210.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1241.8 (K)
Blackbody T 0.3(K) 1166.1 (K)
Blackbody T 0.7(K) 943.5 (K)
Tidally Locked Blackbody T 0.1(K) 1476.7 (K)
Tidally Locked Blackbody T 0.3(K) 1386.8 (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-868
Alternate Name : "2MASS J18492724+4640308, KIC 9813499, KOI-1505, WISE J184927.24+464030.8"
Star Distance(LY) : 5238.7
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 3.9 (GY)
Temperature : 5968 (K)
Spectral type : G6
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.1
Absolute Magnitude: 3.5
Apparent Magnitude: 14.5
Right Ascension(RA) 282.3635
Declination (DEC) 46.6752
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. Batalha"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 724 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-868&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-868%20b/
Kepler-868 b
Kepler-868 b

  • Kepler-868 b is an exoplanet orbiting the star Kepler-868, located about 5238.7 light-years (1606.2 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-868 has apparent magnitude of 14.5, with absolute magnitude of 3.5.
  • It is 0.9 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5968 with its spectral types of G6
  • In this planetary system, the extrasolar planet Kepler-868 b orbits around the star Kepler-868 every 5.0 days with its orbital distance of 0.06 AU ( 8392341.2 km)
  • (Projected orbit of Kepler-868 b around its host star Kepler-868)


  • The Star Kepler-868 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.850 AU ( 127087565.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.174 AU ( 175668227.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.789 AU ( 267679503.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.633 AU ( 393902115.5 km)
  • Radiation at Planetary Boundary of Kepler-868 b : 599210.30 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-868)



  • Kopparapu Recent Venus for Star Kepler-868 distance : 0.870 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-868 distance : 1.102 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-868 distance : 1.065 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-868 distance : 1.167 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-868 distance : 1.937 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-868 distance : 2.043 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-868)



  • Original Kopparapu Recent Venus for Star Kepler-868 distance : 0.875 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-868 distance : 1.132 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-868 distance : 1.158 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-868 distance : 1.972 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-868 distance : 2.050 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-868)



    (Position in Stellar Map of star Kepler-868 and its Exoplanet Kepler-868 b)



    (Zoomed position in Stellar Map of star Kepler-868 and its Exoplanet Kepler-868 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-868*)
    *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