Imaginary Picture of Kepler-1177 b

Display orbital revolution of Kepler-1177 b around the hoststar Kepler-1177
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Exoplanet Name : Kepler-1177 b
Alternate Name : "2MASS J19064114+4924226 b, K02296.01, KIC 11498128 b, KOI-2296 b, KOI-2296.01, WISE J190641.15+492422.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.1700 (Rjup) 1.9055 (Rearth)
Mass (Mjup / Me): 0.0151 (Mjup) 4.8054 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.4361 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.2909
Orbital Period(Observed/Estimated) 106.25 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.3234
Star Radiation at Atmospheric Boundary: 15769.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 500.1 (K)
Blackbody T 0.3(K) 469.7 (K)
Blackbody T 0.7(K) 380.0 (K)
Tidally Locked Blackbody T 0.1(K) 594.8 (K)
Tidally Locked Blackbody T 0.3(K) 558.6 (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-1177
Alternate Name : "2MASS J19064114+4924226, KIC 11498128, KOI-2296, WISE J190641.15+492422.6"
Star Distance(LY) : 4241.1
Stellar Radius(Rsun) : 1.5 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 4.5 (GY)
Temperature : 5674 (K)
Spectral type : G4
UV portion[%]: 7.6
Visible portion[%]: 44.5
IR portion[%]: 47.9
Metalicity : 0.0
Absolute Magnitude: 2.8
Apparent Magnitude: 13.3
Right Ascension(RA) 286.6714
Declination (DEC) 49.4063
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-1177+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1177%20b/
Kepler-1177 b
Kepler-1177 b

  • Kepler-1177 b is an exoplanet orbiting the star Kepler-1177, located about 4241.1 light-years (1300.3 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1177 has apparent magnitude of 13.3, with absolute magnitude of 2.8.
  • It is 1.0 times more massive and 1.5 times bigger compared with our Sun. The surface temperature is 5674 with its spectral types of G4
  • In this planetary system, the extrasolar planet Kepler-1177 b orbits around the star Kepler-1177 every 106.2 days with its orbital distance of 0.44 AU ( 65235885.6 km)
  • (Projected orbit of Kepler-1177 b around its host star Kepler-1177)


  • The Star Kepler-1177 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.071 AU ( 160261052.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.481 AU ( 221522656.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.256 AU ( 337551504.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.320 AU ( 496721826.7 km)
  • Radiation at Planetary Boundary of Kepler-1177 b : 15769.66 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1177)



  • Kopparapu Recent Venus for Star Kepler-1177 distance : 1.117 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1177 distance : 1.415 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1177 distance : 1.366 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1177 distance : 1.498 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1177 distance : 2.506 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1177 distance : 2.643 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1177)



  • Original Kopparapu Recent Venus for Star Kepler-1177 distance : 1.116 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1177 distance : 1.454 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1177 distance : 1.477 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1177 distance : 2.549 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1177 distance : 2.651 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1177)



    (Position in Stellar Map of star Kepler-1177 and its Exoplanet Kepler-1177 b)



    (Zoomed position in Stellar Map of star Kepler-1177 and its Exoplanet Kepler-1177 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1177*)
    *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