Imaginary Picture of Kepler-988 b

Display orbital revolution of Kepler-988 b around the hoststar Kepler-988
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Exoplanet Name : Kepler-988 b
Alternate Name : "2MASS J19225001+4214141 b, K01868.01, KIC 6773862 b, KOI-1868 b, KOI-1868.01, WISE J192249.99+421414.0 b"
Status : Confirmed
Radius (Rjup / Re): 0.1850 (Rjup) 2.0737 (Rearth)
Mass (Mjup / Me): 0.0164 (Mjup) 5.1985 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1092 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0486
Orbital Period(Observed/Estimated) 17.76 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.2089
Star Radiation at Atmospheric Boundary: 8855.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 433.0 (K)
Blackbody T 0.3(K) 406.6 (K)
Blackbody T 0.7(K) 329.0 (K)
Tidally Locked Blackbody T 0.1(K) 514.9 (K)
Tidally Locked Blackbody T 0.3(K) 483.5 (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-988
Alternate Name : "2MASS J19225001+4214141, KIC 6773862, KOI-1868, WISE J192249.99+421414.0"
Star Distance(LY) : 994.2
Stellar Radius(Rsun) : 0.6 (Rsun Measured)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 3.2 (GY)
Temperature : 3828 (K)
Spectral type : K7
UV portion[%]: 0.7
Visible portion[%]: 23.9
IR portion[%]: 75.4
Metalicity : -0.3
Absolute Magnitude: 5.7
Apparent Magnitude: 13.1
Right Ascension(RA) 290.7084
Declination (DEC) 42.2373
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 794 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-988&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-988%20b/
Kepler-988 b
Kepler-988 b

  • Kepler-988 b is an exoplanet orbiting the star Kepler-988, located about 994.2 light-years (304.8 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-988 has apparent magnitude of 13.1, with absolute magnitude of 5.7.
  • It is 0.6 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3828 with its spectral types of K7
  • In this planetary system, the extrasolar planet Kepler-988 b orbits around the star Kepler-988 every 17.8 days with its orbital distance of 0.11 AU ( 16329059.9 km)
  • (Projected orbit of Kepler-988 b around its host star Kepler-988)


  • The Star Kepler-988 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.201 AU ( 30061156.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.278 AU ( 41552373.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.423 AU ( 63316622.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.623 AU ( 93173183.3 km)
  • Radiation at Planetary Boundary of Kepler-988 b : 8855.81 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-988)



  • Kopparapu Recent Venus for Star Kepler-988 distance : 0.226 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-988 distance : 0.286 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-988 distance : 0.276 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-988 distance : 0.304 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-988 distance : 0.547 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-988 distance : 0.577 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-988)



  • Original Kopparapu Recent Venus for Star Kepler-988 distance : 0.223 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-988 distance : 0.296 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-988 distance : 0.296 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-988 distance : 0.556 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-988 distance : 0.578 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-988)



    (Position in Stellar Map of star Kepler-988 and its Exoplanet Kepler-988 b)



    (Zoomed position in Stellar Map of star Kepler-988 and its Exoplanet Kepler-988 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-988*)
    *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