Imaginary Picture of Kepler-781 b

Display orbital revolution of Kepler-781 b around the hoststar Kepler-781
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Exoplanet Name : Kepler-781 b
Alternate Name : "2MASS J19103686+4724533 b, K01160.01, KIC 10330115 b, KOI-1160 b, KOI-1160.01, WISE J191036.86+472453.2 b"
Status : Confirmed
Radius (Rjup / Re): 0.2580 (Rjup) 2.8919 (Rearth)
Mass (Mjup / Me): 0.0223 (Mjup) 7.0830 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1020 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0362
Orbital Period(Observed/Estimated) 13.21 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.8469
Star Radiation at Atmospheric Boundary: 60661.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 700.4 (K)
Blackbody T 0.3(K) 657.8 (K)
Blackbody T 0.7(K) 532.2 (K)
Tidally Locked Blackbody T 0.1(K) 833.0 (K)
Tidally Locked Blackbody T 0.3(K) 782.2 (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-781
Alternate Name : "2MASS J19103686+4724533, KIC 10330115, KOI-1160, WISE J191036.86+472453.2"
Star Distance(LY) : 3479.3
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 4.9 (GY)
Temperature : 5341 (K)
Spectral type : K1
UV portion[%]: 4.6
Visible portion[%]: 39.5
IR portion[%]: 55.8
Metalicity : -0.1
Absolute Magnitude: 4.5
Apparent Magnitude: 14.6
Right Ascension(RA) 287.6536
Declination (DEC) 47.4148
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. Batalha"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 666 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-781+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-781%20b/
Kepler-781 b
Kepler-781 b

  • Kepler-781 b is an exoplanet orbiting the star Kepler-781, located about 3479.3 light-years (1066.8 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-781 has apparent magnitude of 14.6, with absolute magnitude of 4.5.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5341 with its spectral types of K1
  • In this planetary system, the extrasolar planet Kepler-781 b orbits around the star Kepler-781 every 13.2 days with its orbital distance of 0.10 AU ( 15254035.1 km)
  • (Projected orbit of Kepler-781 b around its host star Kepler-781)


  • The Star Kepler-781 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.491 AU ( 73497132.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.679 AU ( 101592244.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.035 AU ( 154804098.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.523 AU ( 227801012.4 km)
  • Radiation at Planetary Boundary of Kepler-781 b : 60661.16 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-781)



  • Kopparapu Recent Venus for Star Kepler-781 distance : 0.522 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-781 distance : 0.661 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-781 distance : 0.639 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-781 distance : 0.701 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-781 distance : 1.183 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-781 distance : 1.248 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-781)



  • Original Kopparapu Recent Venus for Star Kepler-781 distance : 0.519 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-781 distance : 0.681 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-781 distance : 0.687 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-781 distance : 1.204 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-781 distance : 1.252 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-781)



    (Position in Stellar Map of star Kepler-781 and its Exoplanet Kepler-781 b)



    (Zoomed position in Stellar Map of star Kepler-781 and its Exoplanet Kepler-781 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-781*)
    *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