Imaginary Picture of Kepler-377 b

Display orbital revolution of Kepler-377 b around the hoststar Kepler-377
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Exoplanet Name : Kepler-377 b
Alternate Name : "2MASS J19414128+3844084 b, K02279.02, KIC 3661886 b, KOI-2279 b, KOI-2279.02, WISE J194141.28+384408.4 b"
Status : Confirmed
Radius (Rjup / Re): 0.1240 (Rjup) 1.3899 (Rearth)
Mass (Mjup / Me): 0.0101 (Mjup) 3.2191 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1090 (AU) 0.1090 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0342
Orbital Period(Observed/Estimated) 12.51 (Days Obs.) 14.01 (Days Est.)
Surface Gravity (G Earth) 1.6663
Star Radiation at Atmospheric Boundary: 181226.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 920.9 (K)
Blackbody T 0.3(K) 864.8 (K)
Blackbody T 0.7(K) 699.7 (K)
Tidally Locked Blackbody T 0.1(K) 1095.1 (K)
Tidally Locked Blackbody T 0.3(K) 1028.4 (K)
Size Class: super-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-377
Alternate Name : "2MASS J19414128+3844084, KIC 3661886, KOI-2279, WISE J194141.28+384408.4"
Star Distance(LY) : 2685.6
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5924 (K)
Spectral type : G1
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.5
Absolute Magnitude: 3.2
Apparent Magnitude: 12.8
Right Ascension(RA) 295.4220
Declination (DEC) 38.7357
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-377+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-377%20b/
Kepler-377 b
Kepler-377 b

  • Kepler-377 b is an exoplanet orbiting the star Kepler-377, located about 2685.6 light-years (823.4 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-377 has apparent magnitude of 12.8, with absolute magnitude of 3.2.
  • It is 0.9 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5924 with its spectral types of G1
  • In this planetary system, the extrasolar planet Kepler-377 b orbits around the star Kepler-377 every 12.5 days with its orbital distance of 0.11 AU ( 16306167.9 km)
  • (Projected orbit of Kepler-377 b around its host star Kepler-377)


  • The Star Kepler-377 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.908 AU ( 135797739.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.255 AU ( 187707963.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.912 AU ( 286025396.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.814 AU ( 420898901.0 km)
  • Radiation at Planetary Boundary of Kepler-377 b : 181226.07 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-377)



  • Kopparapu Recent Venus for Star Kepler-377 distance : 0.933 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-377 distance : 1.181 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-377 distance : 1.141 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-377 distance : 1.250 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-377 distance : 2.078 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-377 distance : 2.191 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-377)



  • Original Kopparapu Recent Venus for Star Kepler-377 distance : 0.937 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-377 distance : 1.213 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-377 distance : 1.239 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-377 distance : 2.115 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-377 distance : 2.199 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-377)



    (Position in Stellar Map of star Kepler-377 and its Exoplanet Kepler-377 b)



    (Zoomed position in Stellar Map of star Kepler-377 and its Exoplanet Kepler-377 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-377*)
    *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