Imaginary Picture of Kepler-69 c

Display orbital revolution of Kepler-69 c around the hoststar Kepler-69
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Exoplanet Name : Kepler-69 c
Alternate Name : "2MASS J19330262+4452080 c, K00172.02, KIC 8692861 c, KOI-172 c, KOI-172.02, WISE J193302.61+445208.0 c"
Status : Confirmed
Radius (Rjup / Re): 0.1530 (Rjup) 1.7150 (Rearth)
Mass (Mjup / Me): 0.0137 (Mjup) 4.3569 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.6400 (AU) 0.6400 (AU Est.)
Eccentricity : 0.1400
Orbital Period(Yrs) 0.6638
Orbital Period(Observed/Estimated) 242.46 (Days Obs.) 207.79 (Days Est.)
Surface Gravity (G Earth) 1.4813
Star Radiation at Atmospheric Boundary: 4521.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 366.0 (K)
Blackbody T 0.3(K) 343.7 (K)
Blackbody T 0.7(K) 278.1 (K)
Tidally Locked Blackbody T 0.1(K) 435.2 (K)
Tidally Locked Blackbody T 0.3(K) 408.7 (K)
Size Class: super-Earth-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-69
Alternate Name : "2MASS J19330262+4452080, KIC 8692861, KOI-172, WISE J193302.61+445208.0"
Star Distance(LY) : 2381.7
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5630 (K)
Spectral type : G4 V
UV portion[%]: 7.4
Visible portion[%]: 44.0
IR portion[%]: 48.6
Metalicity : -0.3
Absolute Magnitude: 4.4
Apparent Magnitude: 13.7
Right Ascension(RA) 293.2609
Declination (DEC) 44.8689
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Thomas Barclay1,2, Christopher J. Burke1,3, Steve B. Howell1, Jason F. Rowe1,3, Daniel Huber1, Howard Isaacson4, Jon M. Jenkins1,3, Rea Kolbl4, Geoffrey W. Marcy4, Elisa V. Quintana1,3, Martin Still1,2, Joseph D. Twicken1,3, Stephen T. Bryson1, William J. Borucki1, Douglas A. Caldwell1,3, David Ciardi5, Bruce D. Clarke1,3, Jessie L Christiansen1,3, Jeffrey L. Coughlin1,3, Debra A. Fischer6, Jie Li1,3, Michael R. Haas1, Roger Hunter1, Jack J. Lissauer1, Fergal Mullally1,3, Anima Sabale7, Shawn E. Seader1,3, Jeffrey C. Smith1,3, Peter Tenenbaum1,3, AKM Kamal Uddin7, and Susan E. Thompson1,"
Discovery Paper - Title A SUPER-EARTH-SIZED PLANET ORBITING IN OR NEAR THE HABITABLE ZONE AROUND SUN-LIKE STAR
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-69+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-69%20c/
Kepler-69 c
Kepler-69 c
  • Kepler-69 c is an exoplanet orbiting the star Kepler-69, located about 2381.7 light-years (730.2 pc) away from Solar System. Its discovery was publicly announced on 2013.
  • The host star Kepler-69 has apparent magnitude of 13.7, with absolute magnitude of 4.4.
  • It is 0.8 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5630 with its spectral types of G4 V
  • In this planetary system, the extrasolar planet Kepler-69 c orbits around the star Kepler-69 every 242.5 days with its orbital distance of 0.64 AU ( 95742637.2 km)
    • (Projected orbit of Kepler-69 c around its host star Kepler-69)


  • The Star Kepler-69 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.842 AU ( 125940488.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.164 AU ( 174082666.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.773 AU ( 265263459.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.609 AU ( 390346801.6 km)
  • Radiation at Planetary Boundary of Kepler-69 c : 4521.26 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-69)



  • Kopparapu Recent Venus for Star Kepler-69 distance : 0.880 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-69 distance : 1.115 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-69 distance : 1.077 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-69 distance : 1.181 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-69 distance : 1.977 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-69 distance : 2.085 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-69)



  • Original Kopparapu Recent Venus for Star Kepler-69 distance : 0.879 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-69 distance : 1.146 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-69 distance : 1.163 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-69 distance : 2.011 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-69 distance : 2.091 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-69)



    (Position in Stellar Map of star Kepler-69 and its Exoplanet Kepler-69 c)



    (Zoomed position in Stellar Map of star Kepler-69 and its Exoplanet Kepler-69 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-69*)
    *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