Imaginary Picture of Kepler-307 c

Display orbital revolution of Kepler-307 c around the hoststar Kepler-307
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Exoplanet Name : Kepler-307 c
Alternate Name : "2MASS J19511083+4025037 c, K01576.02, KIC 5299459 c, KOI-1576 c, KOI-1576.02, WISE J195110.82+402503.6 c"
Status : Confirmed
Radius (Rjup / Re): 0.1960 (Rjup) 2.1970 (Rearth)
Mass (Mjup / Me): 0.0115 (Mjup) 3.6404 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1052 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0358
Orbital Period(Observed/Estimated) 13.07 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.7542
Star Radiation at Atmospheric Boundary: 91640.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 776.5 (K)
Blackbody T 0.3(K) 729.3 (K)
Blackbody T 0.7(K) 590.0 (K)
Tidally Locked Blackbody T 0.1(K) 923.5 (K)
Tidally Locked Blackbody T 0.3(K) 867.2 (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-307
Alternate Name : "2MASS J19511083+4025037, KIC 5299459, KOI-1576, WISE J195110.82+402503.6"
Star Distance(LY) : 1876.4
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5559 (K)
Spectral type : G7
UV portion[%]: 7.1
Visible portion[%]: 43.6
IR portion[%]: 49.2
Metalicity : 0.2
Absolute Magnitude: 5.3
Apparent Magnitude: 14.1
Right Ascension(RA) 297.7951
Declination (DEC) 40.4177
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 http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-307+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-307%20c/
Kepler-307 c
Kepler-307 c

  • Kepler-307 c is an exoplanet orbiting the star Kepler-307, located about 1876.4 light-years (575.3 pc) away from Solar System. Its discovery was publicly announced on 2013.
  • The host star Kepler-307 has apparent magnitude of 14.1, with absolute magnitude of 5.3.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5559 with its spectral types of G7
  • In this planetary system, the extrasolar planet Kepler-307 c orbits around the star Kepler-307 every 13.1 days with its orbital distance of 0.11 AU ( 15744432.8 km)
  • (Projected orbit of Kepler-307 c around its host star Kepler-307)


  • The Star Kepler-307 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.623 AU ( 93239758.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.862 AU ( 128881713.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.313 AU ( 196387209.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.932 AU ( 288992381.8 km)
  • Radiation at Planetary Boundary of Kepler-307 c : 91640.54 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-307)



  • Kopparapu Recent Venus for Star Kepler-307 distance : 0.654 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-307 distance : 0.829 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-307 distance : 0.800 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-307 distance : 0.878 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-307 distance : 1.473 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-307 distance : 1.553 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-307)



  • Original Kopparapu Recent Venus for Star Kepler-307 distance : 0.653 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-307 distance : 0.852 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-307 distance : 0.863 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-307 distance : 1.498 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-307 distance : 1.558 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-307)



    (Position in Stellar Map of star Kepler-307 and its Exoplanet Kepler-307 c)



    (Zoomed position in Stellar Map of star Kepler-307 and its Exoplanet Kepler-307 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-307*)
    *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