Imaginary Picture of Kepler-1038 b

Display orbital revolution of Kepler-1038 b around the hoststar Kepler-1038
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Exoplanet Name : Kepler-1038 b
Alternate Name : "2MASS J19555332+4407565 b, K01986.01, KIC 8257205 b, KOI-1986 b, KOI-1986.01, WISE J195553.32+440756.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.3150 (Rjup) 3.5308 (Rearth)
Mass (Mjup / Me): 0.0268 (Mjup) 8.5278 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.5238 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.4065
Orbital Period(Observed/Estimated) 148.46 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.6840
Star Radiation at Atmospheric Boundary: 2066.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 300.9 (K)
Blackbody T 0.3(K) 282.6 (K)
Blackbody T 0.7(K) 228.7 (K)
Tidally Locked Blackbody T 0.1(K) 357.9 (K)
Tidally Locked Blackbody T 0.3(K) 336.1 (K)
Size Class: Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-1038
Alternate Name : "2MASS J19555332+4407565, KIC 8257205, KOI-1986, WISE J195553.32+440756.6"
Star Distance(LY) : 1905.0
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 4.3 (GY)
Temperature : 5159 (K)
Spectral type : K0
UV portion[%]: 4.6
Visible portion[%]: 39.5
IR portion[%]: 55.8
Metalicity : -0.0
Absolute Magnitude: 4.5
Apparent Magnitude: 13.4
Right Ascension(RA) 298.9722
Declination (DEC) 44.1324
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-1038+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1038%20b/
Kepler-1038 b
Kepler-1038 b

  • Kepler-1038 b is an exoplanet orbiting the star Kepler-1038, located about 1905.0 light-years (584.1 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1038 has apparent magnitude of 13.4, with absolute magnitude of 4.5.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5159 with its spectral types of K0
  • In this planetary system, the extrasolar planet Kepler-1038 b orbits around the star Kepler-1038 every 148.5 days with its orbital distance of 0.52 AU ( 78363166.5 km)
  • (Projected orbit of Kepler-1038 b around its host star Kepler-1038)


  • The Star Kepler-1038 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.466 AU ( 69694824.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.644 AU ( 96336460.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.981 AU ( 146795447.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.444 AU ( 216015931.3 km)
  • Radiation at Planetary Boundary of Kepler-1038 b : 2066.89 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1038)



  • Kopparapu Recent Venus for Star Kepler-1038 distance : 0.500 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1038 distance : 0.633 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1038 distance : 0.612 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1038 distance : 0.671 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1038 distance : 1.140 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1038 distance : 1.203 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1038)



  • Original Kopparapu Recent Venus for Star Kepler-1038 distance : 0.496 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1038 distance : 0.652 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1038 distance : 0.656 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1038 distance : 1.160 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1038 distance : 1.206 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1038)



    (Position in Stellar Map of star Kepler-1038 and its Exoplanet Kepler-1038 b)



    (Zoomed position in Stellar Map of star Kepler-1038 and its Exoplanet Kepler-1038 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1038*)
    *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