Imaginary Picture of Kepler-1421 b

Display orbital revolution of Kepler-1421 b around the hoststar Kepler-1421
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Exoplanet Name : Kepler-1421 b
Alternate Name : "2MASS J19061934+4832391 b, K03060.01, KIC 11019987 b, KOI-3060 b, KOI-3060.01, WISE J190619.34+483239.1 b"
Status : Confirmed
Radius (Rjup / Re): 0.0830 (Rjup) 0.9303 (Rearth)
Mass (Mjup / Me): 0.0024 (Mjup) 0.7563 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0765 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0189
Orbital Period(Observed/Estimated) 6.91 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.8738
Star Radiation at Atmospheric Boundary: 879569.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1366.8 (K)
Blackbody T 0.3(K) 1283.6 (K)
Blackbody T 0.7(K) 1038.6 (K)
Tidally Locked Blackbody T 0.1(K) 1625.4 (K)
Tidally Locked Blackbody T 0.3(K) 1526.4 (K)
Size Class: 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-1421
Alternate Name : "2MASS J19061934+4832391, KIC 11019987, KOI-3060, WISE J190619.34+483239.1"
Star Distance(LY) : 2554.5
Stellar Radius(Rsun) : 1.7 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 2.8 (GY)
Temperature : 6190 (K)
Spectral type : F8
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.1
Absolute Magnitude: 2.4
Apparent Magnitude: 11.8
Right Ascension(RA) 286.5806
Declination (DEC) 48.5442
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-1421+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1421%20b/
Kepler-1421 b
Kepler-1421 b

  • Kepler-1421 b is an exoplanet orbiting the star Kepler-1421, located about 2554.5 light-years (783.2 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1421 has apparent magnitude of 11.8, with absolute magnitude of 2.4.
  • It is 1.2 times more massive and 1.7 times bigger compared with our Sun. The surface temperature is 6190 with its spectral types of F8
  • In this planetary system, the extrasolar planet Kepler-1421 b orbits around the star Kepler-1421 every 6.9 days with its orbital distance of 0.08 AU ( 11445048.3 km)
  • (Projected orbit of Kepler-1421 b around its host star Kepler-1421)


  • The Star Kepler-1421 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.404 AU ( 209982459.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.940 AU ( 290250633.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.956 AU ( 442277733.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.351 AU ( 650831060.1 km)
  • Radiation at Planetary Boundary of Kepler-1421 b : 879569.56 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1421)



  • Kopparapu Recent Venus for Star Kepler-1421 distance : 1.419 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1421 distance : 1.797 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1421 distance : 1.735 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1421 distance : 1.902 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1421 distance : 3.143 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1421 distance : 3.315 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1421)



  • Original Kopparapu Recent Venus for Star Kepler-1421 distance : 1.433 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1421 distance : 1.844 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1421 distance : 1.896 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1421 distance : 3.199 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1421 distance : 3.327 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1421)



    (Position in Stellar Map of star Kepler-1421 and its Exoplanet Kepler-1421 b)



    (Zoomed position in Stellar Map of star Kepler-1421 and its Exoplanet Kepler-1421 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1421*)
    *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