Imaginary Picture of Kepler-284 b

Display orbital revolution of Kepler-284 b around the hoststar Kepler-284
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Exoplanet Name : Kepler-284 b
Alternate Name : "2MASS J19323515+4743467 b, K01301.01, KIC 10538176 b, KOI-1301 b, KOI-1301.01, WISE J193235.15+474347.0 b"
Status : Confirmed
Radius (Rjup / Re): 0.2000 (Rjup) 2.2418 (Rearth)
Mass (Mjup / Me): 0.0176 (Mjup) 5.5894 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1040 (AU) 0.1040 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0348
Orbital Period(Observed/Estimated) 12.70 (Days Obs.) 21.01 (Days Est.)
Surface Gravity (G Earth) 1.1122
Star Radiation at Atmospheric Boundary: 50392.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 668.7 (K)
Blackbody T 0.3(K) 628.0 (K)
Blackbody T 0.7(K) 508.1 (K)
Tidally Locked Blackbody T 0.1(K) 795.2 (K)
Tidally Locked Blackbody T 0.3(K) 746.8 (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-284
Alternate Name : "2MASS J19323515+4743467, KIC 10538176, KOI-1301, WISE J193235.15+474347.0"
Star Distance(LY) : 3369.4
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.3 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5219 (K)
Spectral type : G6
UV portion[%]: 7.3
Visible portion[%]: 44.0
IR portion[%]: 48.7
Metalicity : -0.1
Absolute Magnitude: 4.5
Apparent Magnitude: 14.6
Right Ascension(RA) 293.1465
Declination (DEC) 47.7296
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-284&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-284%20b/
Kepler-284 b
Kepler-284 b

  • Kepler-284 b is an exoplanet orbiting the star Kepler-284, located about 3369.4 light-years (1033.1 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-284 has apparent magnitude of 14.6, with absolute magnitude of 4.5.
  • It is 0.3 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5219 with its spectral types of G6
  • In this planetary system, the extrasolar planet Kepler-284 b orbits around the star Kepler-284 every 12.7 days with its orbital distance of 0.10 AU ( 15558178.6 km)
  • (Projected orbit of Kepler-284 b around its host star Kepler-284)


  • The Star Kepler-284 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.457 AU ( 68324060.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.631 AU ( 94441706.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.962 AU ( 143908260.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.416 AU ( 211767309.9 km)
  • Radiation at Planetary Boundary of Kepler-284 b : 50392.89 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-284)



  • Kopparapu Recent Venus for Star Kepler-284 distance : 0.489 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-284 distance : 0.619 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-284 distance : 0.598 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-284 distance : 0.656 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-284 distance : 1.112 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-284 distance : 1.173 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-284)



  • Original Kopparapu Recent Venus for Star Kepler-284 distance : 0.485 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-284 distance : 0.637 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-284 distance : 0.641 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-284 distance : 1.131 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-284 distance : 1.176 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-284)



    (Position in Stellar Map of star Kepler-284 and its Exoplanet Kepler-284 b)



    (Zoomed position in Stellar Map of star Kepler-284 and its Exoplanet Kepler-284 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-284*)
    *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