Imaginary Picture of Kepler-197 e

Display orbital revolution of Kepler-197 e around the hoststar Kepler-197
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Exoplanet Name : Kepler-197 e
Alternate Name : "2MASS J19405434+5033323 e, K00623.04, KIC 12068975 e, KOI-623 e, KOI-623.04, Kepler-197 A e, WISE J194054.30+503332.4
Status : Confirmed
Radius (Rjup / Re): 0.0810 (Rjup) 0.9079 (Rearth)
Mass (Mjup / Me): 0.0022 (Mjup) 0.6935 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1640 (AU) 0.1640 (AU Est.)
Eccentricity : 0.3800
Orbital Period(Yrs) 0.0690
Orbital Period(Observed/Estimated) 25.21 (Days Obs.) 25.43 (Days Est.)
Surface Gravity (G Earth) 0.8413
Star Radiation at Atmospheric Boundary: 77831.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 745.5 (K)
Blackbody T 0.3(K) 700.1 (K)
Blackbody T 0.7(K) 566.4 (K)
Tidally Locked Blackbody T 0.1(K) 886.5 (K)
Tidally Locked Blackbody T 0.3(K) 832.5 (K)
Size Class: 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-197
Alternate Name : "2MASS J19405434+5033323, KIC 12068975, KOI-623, Kepler-197 A, WISE J194054.30+503332.4"
Star Distance(LY) : 886.3
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5945 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.5
Absolute Magnitude: 3.6
Apparent Magnitude: 10.8
Right Ascension(RA) 295.2264
Declination (DEC) 50.5590
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Rowe,ason.; Bryson,tephen.; Marcy,eoffrey.; Lissauer,ack.; Jontof-Hutter,aniel; Mullally,ergal; Gilliland,onald.; Issacson,oward; Ford,ric; Howell,teve.; Borucki,illiam.; Haas,ichael; Huber,aniel; Steffen,ason.; Thompson,usan.; Quintana,lisa; Barclay,homas; Still,artin; Fortney,onathan; Gautier,..,II; Hunter,oger; Caldwell,ouglas.; Ciardi,avid.; Devore,dna; Cochran,illiam; Jenkins,on; Agol,ric; Carter,oshua.; Geary,ohn"
Discovery Paper - Title Validation of Kepler's Multiple Planet Candidates. III. Light Curve Analysis and Announcement of Hundreds of New Multi-planet Systems
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-197%20e/
Kepler-197 e
Kepler-197 e

  • Kepler-197 e is an exoplanet orbiting the star Kepler-197, located about 886.3 light-years (271.7 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-197 has apparent magnitude of 10.8, with absolute magnitude of 3.6.
  • It is 0.9 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5945 with its spectral types of G0
  • In this planetary system, the extrasolar planet Kepler-197 e orbits around the star Kepler-197 every 25.2 days with its orbital distance of 0.16 AU ( 24534050.8 km)
  • (Projected orbit of Kepler-197 e around its host star Kepler-197)


  • The Star Kepler-197 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.895 AU ( 133898694.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.237 AU ( 185082987.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.885 AU ( 282025513.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.774 AU ( 415012898.2 km)
  • Radiation at Planetary Boundary of Kepler-197 e : 77831.17 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-197)



  • Kopparapu Recent Venus for Star Kepler-197 distance : 0.918 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-197 distance : 1.163 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-197 distance : 1.123 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-197 distance : 1.231 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-197 distance : 2.045 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-197 distance : 2.157 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-197)



  • Original Kopparapu Recent Venus for Star Kepler-197 distance : 0.923 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-197 distance : 1.194 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-197 distance : 1.221 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-197 distance : 2.081 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-197 distance : 2.164 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-197)



    (Position in Stellar Map of star Kepler-197 and its Exoplanet Kepler-197 e)



    (Zoomed position in Stellar Map of star Kepler-197 and its Exoplanet Kepler-197 e (zoom level 3))

    (Synthetic Spectrum of star Kepler-197*)
    *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