Imaginary Picture of Kepler-845 b

Display orbital revolution of Kepler-845 b around the hoststar Kepler-845
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Exoplanet Name : Kepler-845 b
Alternate Name : "2MASS J19234981+4912137 b, K01428.01, KIC 11401182 b, KOI-1428 b, KOI-1428.01, WISE J192349.82+491213.4 b"
Status : Confirmed
Radius (Rjup / Re): 0.1820 (Rjup) 2.0400 (Rearth)
Mass (Mjup / Me): 0.0161 (Mjup) 5.1201 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0172 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0025
Orbital Period(Observed/Estimated) 0.93 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.2303
Star Radiation at Atmospheric Boundary: 1028904.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1421.5 (K)
Blackbody T 0.3(K) 1334.9 (K)
Blackbody T 0.7(K) 1080.1 (K)
Tidally Locked Blackbody T 0.1(K) 1690.4 (K)
Tidally Locked Blackbody T 0.3(K) 1587.5 (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-845
Alternate Name : "2MASS J19234981+4912137, KIC 11401182, KOI-1428, WISE J192349.82+491213.4"
Star Distance(LY) : 1405.4
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 4.8 (GY)
Temperature : 4773 (K)
Spectral type : K2
UV portion[%]: 2.8
Visible portion[%]: 36.2
IR portion[%]: 60.9
Metalicity : 0.0
Absolute Magnitude: 4.9
Apparent Magnitude: 13.1
Right Ascension(RA) 290.9576
Declination (DEC) 49.2038
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 710 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-845&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-845%20b/
Kepler-845 b
Kepler-845 b

  • Kepler-845 b is an exoplanet orbiting the star Kepler-845, located about 1405.4 light-years (430.9 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-845 has apparent magnitude of 13.1, 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 4773 with its spectral types of K2
  • In this planetary system, the extrasolar planet Kepler-845 b orbits around the star Kepler-845 every 0.9 days with its orbital distance of 0.02 AU ( 2574715.2 km)
  • (Projected orbit of Kepler-845 b around its host star Kepler-845)


  • The Star Kepler-845 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.342 AU ( 51091314.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.472 AU ( 70621548.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.719 AU ( 107611611.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.059 AU ( 158355199.8 km)
  • Radiation at Planetary Boundary of Kepler-845 b : 1028904.70 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-845)



  • Kopparapu Recent Venus for Star Kepler-845 distance : 0.373 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-845 distance : 0.473 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-845 distance : 0.456 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-845 distance : 0.501 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-845 distance : 0.865 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-845 distance : 0.912 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-845)



  • Original Kopparapu Recent Venus for Star Kepler-845 distance : 0.369 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-845 distance : 0.487 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-845 distance : 0.488 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-845 distance : 0.879 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-845 distance : 0.914 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-845)



    (Position in Stellar Map of star Kepler-845 and its Exoplanet Kepler-845 b)



    (Zoomed position in Stellar Map of star Kepler-845 and its Exoplanet Kepler-845 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-845*)
    *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