Imaginary Picture of Kepler-1381 b

Display orbital revolution of Kepler-1381 b around the hoststar Kepler-1381
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Exoplanet Name : Kepler-1381 b
Alternate Name : "2MASS J19100858+4843400 b, K02898.01, KIC 11129258 b, KOI-2898 b, KOI-2898.01, WISE J191008.58+484340.0 b"
Status : Confirmed
Radius (Rjup / Re): 0.2010 (Rjup) 2.2530 (Rearth)
Mass (Mjup / Me): 0.0177 (Mjup) 5.6154 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1668 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0695
Orbital Period(Observed/Estimated) 25.38 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.1063
Star Radiation at Atmospheric Boundary: 43540.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 644.7 (K)
Blackbody T 0.3(K) 605.5 (K)
Blackbody T 0.7(K) 489.9 (K)
Tidally Locked Blackbody T 0.1(K) 766.7 (K)
Tidally Locked Blackbody T 0.3(K) 720.0 (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-1381
Alternate Name : "2MASS J19100858+4843400, KIC 11129258, KOI-2898, WISE J191008.58+484340.0"
Star Distance(LY) : 3909.3
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 4.1 (GY)
Temperature : 6138 (K)
Spectral type : G3
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.1
Absolute Magnitude: 4.0
Apparent Magnitude: 14.4
Right Ascension(RA) 287.5358
Declination (DEC) 48.7278
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-1381+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1381%20b/
Kepler-1381 b
Kepler-1381 b

  • Kepler-1381 b is an exoplanet orbiting the star Kepler-1381, located about 3909.3 light-years (1198.6 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1381 has apparent magnitude of 14.4, with absolute magnitude of 4.0.
  • It is 1.0 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 6138 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-1381 b orbits around the star Kepler-1381 every 25.4 days with its orbital distance of 0.17 AU ( 24945877.0 km)
  • (Projected orbit of Kepler-1381 b around its host star Kepler-1381)


  • The Star Kepler-1381 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.681 AU ( 101830512.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.941 AU ( 140756380.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.434 AU ( 214481574.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.110 AU ( 315619032.5 km)
  • Radiation at Planetary Boundary of Kepler-1381 b : 43540.93 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1381)



  • Kopparapu Recent Venus for Star Kepler-1381 distance : 0.690 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1381 distance : 0.874 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1381 distance : 0.844 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1381 distance : 0.925 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1381 distance : 1.530 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1381 distance : 1.614 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1381)



  • Original Kopparapu Recent Venus for Star Kepler-1381 distance : 0.696 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1381 distance : 0.897 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1381 distance : 0.921 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1381 distance : 1.558 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1381 distance : 1.620 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1381)



    (Position in Stellar Map of star Kepler-1381 and its Exoplanet Kepler-1381 b)



    (Zoomed position in Stellar Map of star Kepler-1381 and its Exoplanet Kepler-1381 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1381*)
    *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