Imaginary Picture of Kepler-1171 b

Display orbital revolution of Kepler-1171 b around the hoststar Kepler-1171
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Exoplanet Name : Kepler-1171 b
Alternate Name : "2MASS J19395014+3835296 b, K02276.01, KIC 3458028 b, KOI-2276 b, KOI-2276.01, WISE J193950.14+383529.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.2280 (Rjup) 2.5557 (Rearth)
Mass (Mjup / Me): 0.0199 (Mjup) 6.3138 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0291 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0039
Orbital Period(Observed/Estimated) 1.44 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.9667
Star Radiation at Atmospheric Boundary: 13227883.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 2691.6 (K)
Blackbody T 0.3(K) 2527.7 (K)
Blackbody T 0.7(K) 2045.2 (K)
Tidally Locked Blackbody T 0.1(K) 3200.9 (K)
Tidally Locked Blackbody T 0.3(K) 3006.0 (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-1171
Alternate Name : "2MASS J19395014+3835296, KIC 3458028, KOI-2276, WISE J193950.14+383529.7"
Star Distance(LY) : 1698.7
Stellar Radius(Rsun) : 1.8 (Rsun Measured)
Stellar Mass(Msun) : 1.6 (Msun Measured) 1.6 (Msun Estimated)
Star Age : 1.4 (GY)
Temperature : 7225 (K)
Spectral type : F2
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.0
Absolute Magnitude: 2.2
Apparent Magnitude: 10.8
Right Ascension(RA) 294.9589
Declination (DEC) 38.5916
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. Batalha2"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 428 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1171+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1171%20b/
Kepler-1171 b
Kepler-1171 b

  • Kepler-1171 b is an exoplanet orbiting the star Kepler-1171, located about 1698.7 light-years (520.8 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1171 has apparent magnitude of 10.8, with absolute magnitude of 2.2.
  • It is 1.6 times more massive and 1.8 times bigger compared with our Sun. The surface temperature is 7225 with its spectral types of F2
  • In this planetary system, the extrasolar planet Kepler-1171 b orbits around the star Kepler-1171 every 1.4 days with its orbital distance of 0.03 AU ( 4353581.6 km)
  • (Projected orbit of Kepler-1171 b around its host star Kepler-1171)


  • The Star Kepler-1171 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 2.071 AU ( 309757734.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.862 AU ( 428166138.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 4.361 AU ( 652430442.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 6.418 AU ( 960079977.3 km)
  • Radiation at Planetary Boundary of Kepler-1171 b : 13227883.38 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1171)



  • Kopparapu Recent Venus for Star Kepler-1171 distance : 1.981 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1171 distance : 2.509 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1171 distance : 2.423 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1171 distance : 2.653 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1171 distance : 4.333 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1171 distance : 4.569 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1171)



  • Original Kopparapu Recent Venus for Star Kepler-1171 distance : 2.045 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1171 distance : 2.567 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1171 distance : 2.705 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1171 distance : 4.412 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1171 distance : 4.588 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1171)



    (Position in Stellar Map of star Kepler-1171 and its Exoplanet Kepler-1171 b)



    (Zoomed position in Stellar Map of star Kepler-1171 and its Exoplanet Kepler-1171 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1171*)
    *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