Imaginary Picture of Kepler-904 b

Display orbital revolution of Kepler-904 b around the hoststar Kepler-904
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Exoplanet Name : Kepler-904 b
Alternate Name : "2MASS J19151750+4023205 b, K01603.01, KIC 5177104 b, KOI-1603 b, KOI-1603.01, WISE J191517.49+402320.4 b"
Status : Confirmed
Radius (Rjup / Re): 0.1580 (Rjup) 1.7710 (Rearth)
Mass (Mjup / Me): 0.0141 (Mjup) 4.4891 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0430 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0083
Orbital Period(Observed/Estimated) 3.02 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.4312
Star Radiation at Atmospheric Boundary: 1125679.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1453.8 (K)
Blackbody T 0.3(K) 1365.2 (K)
Blackbody T 0.7(K) 1104.6 (K)
Tidally Locked Blackbody T 0.1(K) 1728.8 (K)
Tidally Locked Blackbody T 0.3(K) 1623.6 (K)
Size Class: super-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-904
Alternate Name : "2MASS J19151750+4023205, KIC 5177104, KOI-1603, WISE J191517.49+402320.4"
Star Distance(LY) : 3189.5
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 3.0 (GY)
Temperature : 6221 (K)
Spectral type : G0
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.1
Absolute Magnitude: 3.4
Apparent Magnitude: 13.4
Right Ascension(RA) 288.8229
Declination (DEC) 40.3890
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 737 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-904&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-904%20b/
Kepler-904 b
Kepler-904 b

  • Kepler-904 b is an exoplanet orbiting the star Kepler-904, located about 3189.5 light-years (977.9 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-904 has apparent magnitude of 13.4, with absolute magnitude of 3.4.
  • It is 1.2 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 6221 with its spectral types of G0
  • In this planetary system, the extrasolar planet Kepler-904 b orbits around the star Kepler-904 every 3.0 days with its orbital distance of 0.04 AU ( 6429578.2 km)
  • (Projected orbit of Kepler-904 b around its host star Kepler-904)


  • The Star Kepler-904 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.892 AU ( 133450480.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.233 AU ( 184463439.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.879 AU ( 281081459.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.765 AU ( 413623681.7 km)
  • Radiation at Planetary Boundary of Kepler-904 b : 1125679.43 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-904)



  • Kopparapu Recent Venus for Star Kepler-904 distance : 0.900 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-904 distance : 1.140 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-904 distance : 1.101 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-904 distance : 1.206 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-904 distance : 1.992 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-904 distance : 2.101 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-904)



  • Original Kopparapu Recent Venus for Star Kepler-904 distance : 0.910 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-904 distance : 1.169 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-904 distance : 1.204 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-904 distance : 2.028 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-904 distance : 2.109 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-904)



    (Position in Stellar Map of star Kepler-904 and its Exoplanet Kepler-904 b)



    (Zoomed position in Stellar Map of star Kepler-904 and its Exoplanet Kepler-904 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-904*)
    *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