Imaginary Picture of Kepler-298 d

Display orbital revolution of Kepler-298 d around the hoststar Kepler-298
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Exoplanet Name : Kepler-298 d
Alternate Name : "2MASS J18520955+4849312 d, K01430.03, KIC 11176127 d, KOI-1430 d, KOI-1430.03, WISE J185209.55+484931.2 d"
Radius (Rjup / Re): 0.2230 (Rjup) 2.4996 (Rearth)
Mass (Mjup / Me): 0.0195 (Mjup) 6.1849 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.3050 (AU) 0.3050 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.2121
Orbital Period(Observed/Estimated) 77.47 (Days Obs.) 76.31 (Days Est.)
Surface Gravity (G Earth) 0.9899
Star Radiation at Atmospheric Boundary: 2387.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 312.0 (K)
Blackbody T 0.3(K) 293.0 (K)
Blackbody T 0.7(K) 237.0 (K)
Tidally Locked Blackbody T 0.1(K) 371.0 (K)
Tidally Locked Blackbody T 0.3(K) 348.4 (K)
Size Class: sub-Neptune-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-298
Alternate Name : "2MASS J18520955+4849312, KIC 11176127, KOI-1430, WISE J185209.55+484931.2"
Star Distance(LY) : 1689.9
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4465 (K)
Spectral type : K5
UV portion[%]: 1.5
Visible portion[%]: 30.5
IR portion[%]: 68.0
Metalicity : -0.1
Absolute Magnitude: 5.1
Apparent Magnitude: 13.7
Right Ascension(RA) 283.0398
Declination (DEC) 48.8254
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-298+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-298%20d/
Kepler-298 d
Kepler-298 d

  • Kepler-298 d is an exoplanet orbiting the star Kepler-298, located about 1689.9 light-years (518.1 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-298 has apparent magnitude of 13.7, with absolute magnitude of 5.1.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4465 with its spectral types of K5
  • In this planetary system, the extrasolar planet Kepler-298 d orbits around the star Kepler-298 every 77.5 days with its orbital distance of 0.30 AU ( 45627350.6 km)
  • (Projected orbit of Kepler-298 d around its host star Kepler-298)


  • The Star Kepler-298 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.292 AU ( 43611880.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.403 AU ( 60283015.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.614 AU ( 91857975.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.904 AU ( 135173034.9 km)
  • Radiation at Planetary Boundary of Kepler-298 d : 2387.25 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-298)



  • Kopparapu Recent Venus for Star Kepler-298 distance : 0.322 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-298 distance : 0.408 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-298 distance : 0.394 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-298 distance : 0.433 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-298 distance : 0.757 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-298 distance : 0.799 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-298)



  • Original Kopparapu Recent Venus for Star Kepler-298 distance : 0.318 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-298 distance : 0.421 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-298 distance : 0.421 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-298 distance : 0.769 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-298 distance : 0.800 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-298)



    (Position in Stellar Map of star Kepler-298 and its Exoplanet Kepler-298 d)



    (Zoomed position in Stellar Map of star Kepler-298 and its Exoplanet Kepler-298 d (zoom level 3))

    (Synthetic Spectrum of star Kepler-298*)
    *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