Imaginary Picture of Kepler-841 b

Display orbital revolution of Kepler-841 b around the hoststar Kepler-841
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Exoplanet Name : Kepler-841 b
Alternate Name : "2MASS J18570031+4848346 b, K01423.01, KIC 11177707 b, KOI-1423 b, KOI-1423.01, WISE J185700.32+484834.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.4670 (Rjup) 5.2346 (Rearth)
Mass (Mjup / Me): 0.0998 (Mjup) 31.7411 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.4620 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.3406
Orbital Period(Observed/Estimated) 124.42 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.1584
Star Radiation at Atmospheric Boundary: 2417.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 312.9 (K)
Blackbody T 0.3(K) 293.9 (K)
Blackbody T 0.7(K) 237.8 (K)
Tidally Locked Blackbody T 0.1(K) 372.2 (K)
Tidally Locked Blackbody T 0.3(K) 349.5 (K)
Size Class: sub-Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-841
Alternate Name : "2MASS J18570031+4848346, KIC 11177707, KOI-1423, WISE J185700.32+484834.6"
Star Distance(LY) : 3265.0
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 4.5 (GY)
Temperature : 5023 (K)
Spectral type : K0
UV portion[%]: 3.4
Visible portion[%]: 37.3
IR portion[%]: 59.3
Metalicity : -0.1
Absolute Magnitude: 4.5
Apparent Magnitude: 14.5
Right Ascension(RA) 284.2513
Declination (DEC) 48.8096
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 706 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-841&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-841%20b/
Kepler-841 b
Kepler-841 b

  • Kepler-841 b is an exoplanet orbiting the star Kepler-841, located about 3265.0 light-years (1001.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-841 has apparent magnitude of 14.5, 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 5023 with its spectral types of K0
  • In this planetary system, the extrasolar planet Kepler-841 b orbits around the star Kepler-841 every 124.4 days with its orbital distance of 0.46 AU ( 69119087.5 km)
  • (Projected orbit of Kepler-841 b around its host star Kepler-841)


  • The Star Kepler-841 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.444 AU ( 66477551.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.614 AU ( 91889348.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.936 AU ( 140019032.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.377 AU ( 206044139.9 km)
  • Radiation at Planetary Boundary of Kepler-841 b : 2417.09 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-841)



  • Kopparapu Recent Venus for Star Kepler-841 distance : 0.480 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-841 distance : 0.608 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-841 distance : 0.587 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-841 distance : 0.644 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-841 distance : 1.101 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-841 distance : 1.161 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-841)



  • Original Kopparapu Recent Venus for Star Kepler-841 distance : 0.475 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-841 distance : 0.626 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-841 distance : 0.629 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-841 distance : 1.119 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-841 distance : 1.164 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-841)



    (Position in Stellar Map of star Kepler-841 and its Exoplanet Kepler-841 b)



    (Zoomed position in Stellar Map of star Kepler-841 and its Exoplanet Kepler-841 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-841*)
    *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