Imaginary Picture of Kepler-498 b

Display orbital revolution of Kepler-498 b around the hoststar Kepler-498
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Exoplanet Name : Kepler-498 b
Alternate Name : "2MASS J19212595+4431075 b, K00234.01, KIC 8491277 b, KOI-234 b, KOI-234.01, WISE J192125.95+443107.4 b"
Status : Confirmed
Radius (Rjup / Re): 0.2700 (Rjup) 3.0264 (Rearth)
Mass (Mjup / Me): 0.0232 (Mjup) 7.3889 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0879 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0263
Orbital Period(Observed/Estimated) 9.61 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.8067
Star Radiation at Atmospheric Boundary: 288330.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1034.2 (K)
Blackbody T 0.3(K) 971.2 (K)
Blackbody T 0.7(K) 785.8 (K)
Tidally Locked Blackbody T 0.1(K) 1229.9 (K)
Tidally Locked Blackbody T 0.3(K) 1155.0 (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-498
Alternate Name : "2MASS J19212595+4431075, KIC 8491277, KOI-234, WISE J192125.95+443107.4"
Star Distance(LY) : 3061.2
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 3.9 (GY)
Temperature : 5997 (K)
Spectral type : G3
UV portion[%]: 7.7
Visible portion[%]: 44.6
IR portion[%]: 47.6
Metalicity : -0.0
Absolute Magnitude: 3.3
Apparent Magnitude: 13.2
Right Ascension(RA) 290.3581
Declination (DEC) 44.5188
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 441 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-498%20b/
Kepler-498 b
Kepler-498 b

  • Kepler-498 b is an exoplanet orbiting the star Kepler-498, located about 3061.2 light-years (938.6 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-498 has apparent magnitude of 13.2, with absolute magnitude of 3.3.
  • It is 1.0 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5997 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-498 b orbits around the star Kepler-498 every 9.6 days with its orbital distance of 0.09 AU ( 13148290.1 km)
  • (Projected orbit of Kepler-498 b around its host star Kepler-498)


  • The Star Kepler-498 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.923 AU ( 138116180.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.276 AU ( 190912655.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.945 AU ( 290908638.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.862 AU ( 428084805.6 km)
  • Radiation at Planetary Boundary of Kepler-498 b : 288330.10 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-498)



  • Kopparapu Recent Venus for Star Kepler-498 distance : 0.944 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-498 distance : 1.196 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-498 distance : 1.155 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-498 distance : 1.266 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-498 distance : 2.100 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-498 distance : 2.215 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-498)



  • Original Kopparapu Recent Venus for Star Kepler-498 distance : 0.950 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-498 distance : 1.228 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-498 distance : 1.257 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-498 distance : 2.138 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-498 distance : 2.223 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-498)



    (Position in Stellar Map of star Kepler-498 and its Exoplanet Kepler-498 b)



    (Zoomed position in Stellar Map of star Kepler-498 and its Exoplanet Kepler-498 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-498*)
    *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