Imaginary Picture of Kepler-1446 b

Display orbital revolution of Kepler-1446 b around the hoststar Kepler-1446
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Exoplanet Name : Kepler-1446 b
Alternate Name : "2MASS J19174175+4643342 b, K03246.01, KIC 9885417 b, KOI-3246 b, KOI-3246.01, WISE J191741.76+464333.9 b"
Status : Confirmed
Radius (Rjup / Re): 0.0730 (Rjup) 0.8183 (Rearth)
Mass (Mjup / Me): 0.0015 (Mjup) 0.4799 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0142 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0019
Orbital Period(Observed/Estimated) 0.69 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.7167
Star Radiation at Atmospheric Boundary: 1621857.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1592.7 (K)
Blackbody T 0.3(K) 1495.8 (K)
Blackbody T 0.7(K) 1210.2 (K)
Tidally Locked Blackbody T 0.1(K) 1894.1 (K)
Tidally Locked Blackbody T 0.3(K) 1778.8 (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-1446
Alternate Name : "2MASS J19174175+4643342, KIC 9885417, KOI-3246, WISE J191741.76+464333.9"
Star Distance(LY) : 495.9
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 2.6 (GY)
Temperature : 4848 (K)
Spectral type : K3
UV portion[%]: 2.6
Visible portion[%]: 35.7
IR portion[%]: 61.7
Metalicity : 0.1
Absolute Magnitude: 4.9
Apparent Magnitude: 10.8
Right Ascension(RA) 289.4240
Declination (DEC) 46.7262
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-1446+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1446%20b/
Kepler-1446 b
Kepler-1446 b

  • Kepler-1446 b is an exoplanet orbiting the star Kepler-1446, located about 495.9 light-years (152.1 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1446 has apparent magnitude of 10.8, with absolute magnitude of 4.9.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4848 with its spectral types of K3
  • In this planetary system, the extrasolar planet Kepler-1446 b orbits around the star Kepler-1446 every 0.7 days with its orbital distance of 0.01 AU ( 2130980.6 km)
  • (Projected orbit of Kepler-1446 b around its host star Kepler-1446)


  • The Star Kepler-1446 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.355 AU ( 53090414.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.491 AU ( 73384826.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.747 AU ( 111822235.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.100 AU ( 164551318.2 km)
  • Radiation at Planetary Boundary of Kepler-1446 b : 1621857.31 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1446)



  • Kopparapu Recent Venus for Star Kepler-1446 distance : 0.387 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1446 distance : 0.489 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1446 distance : 0.473 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1446 distance : 0.519 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1446 distance : 0.893 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1446 distance : 0.942 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1446)



  • Original Kopparapu Recent Venus for Star Kepler-1446 distance : 0.382 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1446 distance : 0.505 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1446 distance : 0.505 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1446 distance : 0.908 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1446 distance : 0.944 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1446)



    (Position in Stellar Map of star Kepler-1446 and its Exoplanet Kepler-1446 b)



    (Zoomed position in Stellar Map of star Kepler-1446 and its Exoplanet Kepler-1446 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1446*)
    *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