Imaginary Picture of Kepler-26 c

Display orbital revolution of Kepler-26 c around the hoststar Kepler-26
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Exoplanet Name : Kepler-26 c
Alternate Name : "2MASS J18594583+4633595 c, K00250.02, KIC 9757613 c, KOI-250 c, KOI-250.02, WISE J185945.85+463359.3 c"
Status : Confirmed
Radius (Rjup / Re): 0.2430 (Rjup) 2.7238 (Rearth)
Mass (Mjup / Me): 0.0195 (Mjup) 6.2030 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1070 (AU) 0.1070 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0472
Orbital Period(Observed/Estimated) 17.26 (Days Obs.) 17.40 (Days Est.)
Surface Gravity (G Earth) 0.8361
Star Radiation at Atmospheric Boundary: 8951.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 434.1 (K)
Blackbody T 0.3(K) 407.7 (K)
Blackbody T 0.7(K) 329.9 (K)
Tidally Locked Blackbody T 0.1(K) 516.3 (K)
Tidally Locked Blackbody T 0.3(K) 484.8 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : TTV
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-26
Alternate Name : "2MASS J18594583+4633595, KIC 9757613, KOI-250, WISE J185945.85+463359.3"
Star Distance(LY) : 1093.4
Stellar Radius(Rsun) : 0.6 (Rsun Measured)
Stellar Mass(Msun) : 0.5 (Msun Measured) 0.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3884 (K)
Spectral type : M0 V
UV portion[%]: 0.6
Visible portion[%]: 22.1
IR portion[%]: 77.3
Metalicity : -0.1
Absolute Magnitude: 8.4
Apparent Magnitude: 16.0
Right Ascension(RA) 284.9410
Declination (DEC) 46.5665
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Jason H. Ste_en, Daniel C. Fabrycky, Eric B. Ford, Joshua A. Carter, Jean-Michel D¥¹¡£¥¹¥åesert, Francois Fressin, Matthew J. Holman, Jack J. Lissauer, Althea V. Moorhead, Jason F. Rowe, Darin Ragozzine, William F. Welsh, Natalie M. Batalha, William J. Borucki, Lars A. Buchhave, Steve Bryson, Douglas A. Caldwell, David Charbonneau, David R. Ciardi, William D. Cochran, Michael Endl, Mark E. Everett, Thomas N. Gautier II, Ron L. Gilliland, Forrest R. Girouard, Jon M. Jenkins, Elliott Horch, Steve B. Howell, Howard Isaacson , Todd C. Klaus, David G. Koch, David W. Latham, Jie Li, Philip Lucas, Phillip J. MacQueen, Geo_rey W. Marcy, Sean McCauli_, Christopher K. Middour, Robert L. Morris, Fergal R. Mullally, Samuel N. Quinn, Elisa V. Quintana, Avi Shporer, Martin Still, Peter Tenenbaum, Susan E. Thompson, Joseph D. Twicken, Je_ery Van Cleve"
Discovery Paper - Title Transit Timing Observations from Kepler: III. Con_rmation of 4 Multiple Planet Systems by a Fourier-Domain Study of Anti-correlated Transit Timing Variations
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-26%20c/
Kepler-26 c
Kepler-26 c

  • Kepler-26 c is an exoplanet orbiting the star Kepler-26, located about 1093.4 light-years (335.2 pc) away from Solar System. Its discovery was publicly announced on 2011.
  • The host star Kepler-26 has apparent magnitude of 16.0, with absolute magnitude of 8.4.
  • It is 0.5 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3884 with its spectral types of M0 V
  • In this planetary system, the extrasolar planet Kepler-26 c orbits around the star Kepler-26 every 17.3 days with its orbital distance of 0.11 AU ( 16006972.2 km)
  • (Projected orbit of Kepler-26 c around its host star Kepler-26)


  • The Star Kepler-26 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.198 AU ( 29627102.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.274 AU ( 40952398.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.417 AU ( 62402391.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.614 AU ( 91827853.3 km)
  • Radiation at Planetary Boundary of Kepler-26 c : 8951.57 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-26)



  • Kopparapu Recent Venus for Star Kepler-26 distance : 0.222 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-26 distance : 0.281 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-26 distance : 0.272 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-26 distance : 0.299 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-26 distance : 0.537 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-26 distance : 0.567 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-26)



  • Original Kopparapu Recent Venus for Star Kepler-26 distance : 0.220 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-26 distance : 0.291 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-26 distance : 0.291 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-26 distance : 0.546 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-26 distance : 0.568 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-26)



    (Position in Stellar Map of star Kepler-26 and its Exoplanet Kepler-26 c)



    (Zoomed position in Stellar Map of star Kepler-26 and its Exoplanet Kepler-26 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-26*)
    *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