Imaginary Picture of Kepler-1884 b

Display orbital revolution of Kepler-1884 b around the hoststar Kepler-1884
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Exoplanet Name : Kepler-1884 b
Alternate Name : "KOI-2890 b, KOI-2890.01"
Status : Confirmed
Radius (Rjup / Re): 0.1618 (Rjup) 1.8141 (Rearth)
Mass (Mjup / Me): 0.0144 (Mjup) 4.5905 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0845 (AU) 0.0845 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0246
Orbital Period(Observed/Estimated) 8.99 (Days Obs.) 8.48 (Days Est.)
Surface Gravity (G Earth) 1.3949
Star Radiation at Atmospheric Boundary: 360736.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1093.8 (K)
Blackbody T 0.3(K) 1027.2 (K)
Blackbody T 0.7(K) 831.1 (K)
Tidally Locked Blackbody T 0.1(K) 1300.8 (K)
Tidally Locked Blackbody T 0.3(K) 1221.6 (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-1884
Alternate Name : "KIC 7463685, KOI-2890"
Star Distance(LY) : 4706.7
Stellar Radius(Rsun) : 1.3 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.3 (GY)
Temperature : 6031 (K)
Spectral type : F9/G0V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.2
Absolute Magnitude: 4.6
Apparent Magnitude: 15.4
Right Ascension(RA) 296.7464
Declination (DEC) 43.0454
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
Kepler-1884 b
Kepler-1884 b

  • Kepler-1884 b is an exoplanet orbiting the star Kepler-1884, located about 4706.7 light-years (1443.1 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1884 has apparent magnitude of 15.4, with absolute magnitude of 4.6.
  • It is 1.1 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 6031 with its spectral types of F9/G0V
  • In this planetary system, the extrasolar planet Kepler-1884 b orbits around the star Kepler-1884 every 9.0 days with its orbital distance of 0.08 AU ( 12641020.1 km)
  • (Projected orbit of Kepler-1884 b around its host star Kepler-1884)


  • The Star Kepler-1884 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.993 AU ( 148527651.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.372 AU ( 205304029.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.091 AU ( 312837907.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.077 AU ( 460354685.1 km)
  • Radiation at Planetary Boundary of Kepler-1884 b : 360736.26 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1884)



  • Kopparapu Recent Venus for Star Kepler-1884 distance : 1.013 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1884 distance : 1.283 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1884 distance : 1.239 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1884 distance : 1.358 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1884 distance : 2.252 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1884 distance : 2.375 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1884)



  • Original Kopparapu Recent Venus for Star Kepler-1884 distance : 1.020 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1884 distance : 1.318 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1884 distance : 1.350 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1884 distance : 2.292 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1884 distance : 2.384 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1884)



    (Position in Stellar Map of star Kepler-1884 and its Exoplanet Kepler-1884 b)



    (Zoomed position in Stellar Map of star Kepler-1884 and its Exoplanet Kepler-1884 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1884*)
    *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