Imaginary Picture of Kepler-1234 b

Display orbital revolution of Kepler-1234 b around the hoststar Kepler-1234
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Exoplanet Name : Kepler-1234 b
Alternate Name : "2MASS J19100528+5122331 b, K02424.01, KIC 12453581 b, KOI-2424 b, KOI-2424.01, WISE J191005.26+512233.3 b"
Status : Confirmed
Radius (Rjup / Re): 0.2510 (Rjup) 2.8135 (Rearth)
Mass (Mjup / Me): 0.0217 (Mjup) 6.9041 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0949 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0327
Orbital Period(Observed/Estimated) 11.94 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.8722
Star Radiation at Atmospheric Boundary: 56032.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 686.7 (K)
Blackbody T 0.3(K) 644.9 (K)
Blackbody T 0.7(K) 521.8 (K)
Tidally Locked Blackbody T 0.1(K) 816.6 (K)
Tidally Locked Blackbody T 0.3(K) 766.9 (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-1234
Alternate Name : "2MASS J19100528+5122331, KIC 12453581, KOI-2424, WISE J191005.26+512233.3"
Star Distance(LY) : 2995.1
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 4.4 (GY)
Temperature : 5074 (K)
Spectral type : K2
UV portion[%]: 3.1
Visible portion[%]: 36.7
IR portion[%]: 60.2
Metalicity : 0.0
Absolute Magnitude: 4.5
Apparent Magnitude: 14.4
Right Ascension(RA) 287.5220
Declination (DEC) 51.3759
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton1, Stephen T. Bryson2, Jeffrey L. Coughlin2,3, Jason F. Rowe4, Ganesh Ravichandran5, Erik A. Petigura6,7, Michael R. Haas2, and Natalie M. Batalha11"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 445 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1234+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1234%20b/
Kepler-1234 b
Kepler-1234 b

  • Kepler-1234 b is an exoplanet orbiting the star Kepler-1234, located about 2995.1 light-years (918.3 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1234 has apparent magnitude of 14.4, 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 5074 with its spectral types of K2
  • In this planetary system, the extrasolar planet Kepler-1234 b orbits around the star Kepler-1234 every 11.9 days with its orbital distance of 0.09 AU ( 14198251.9 km)
  • (Projected orbit of Kepler-1234 b around its host star Kepler-1234)


  • The Star Kepler-1234 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.440 AU ( 65748410.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.608 AU ( 90881484.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.926 AU ( 138483271.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.362 AU ( 203784199.9 km)
  • Radiation at Planetary Boundary of Kepler-1234 b : 56032.52 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1234)



  • Kopparapu Recent Venus for Star Kepler-1234 distance : 0.474 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1234 distance : 0.600 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1234 distance : 0.579 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1234 distance : 0.636 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1234 distance : 1.084 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1234 distance : 1.143 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1234)



  • Original Kopparapu Recent Venus for Star Kepler-1234 distance : 0.469 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1234 distance : 0.618 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1234 distance : 0.621 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1234 distance : 1.102 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1234 distance : 1.146 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1234)



    (Position in Stellar Map of star Kepler-1234 and its Exoplanet Kepler-1234 b)



    (Zoomed position in Stellar Map of star Kepler-1234 and its Exoplanet Kepler-1234 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1234*)
    *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