Imaginary Picture of Kepler-989 b
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Exoplanet Name : Kepler-989 b
Alternate Name :
Radius (Rjup / Re): 0.1970 (Rjup) 2.2082 (Rearth)
Mass (Mjup / Me): 0.0173 (Mjup) 5.5114 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0731 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0218
Orbital Period(Observed/Estimated) 7.96 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 92663.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 778.7 (K)
Blackbody T 0.3(K) 731.3 (K)
Blackbody T 0.7(K) 591.7 (K)
Tidally Locked Blackbody T 0.1(K) 926.0 (K)
Tidally Locked Blackbody T 0.3(K) 869.6 (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-989
Alternate Name :
Star Distance(LY) : 1578.6
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5074 (K)
Spectral type : K1
Metalicity : 0.0
Absolute Magnitude: 4.5
Apparent Magnitude: 13.0
Right Ascension(RA) 281.5829
Declination (DEC) 47.2336
Hubble Space Telescope Guide Star Catalog (GSC) ID 0
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 795 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK 0
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-989%20b/
Kepler-989 b
Kepler-989 b

  • Kepler-989 b is an exoplanet orbiting the star Kepler-989, located about 1578.6 light-years (484.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-989 has apparent magnitude of 13.0, with absolute magnitude of 4.5.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5074 with its spectral types of K1
  • In this planetary system, the extrasolar planet Kepler-989 b orbits around the star Kepler-989 every 8.0 days with its orbital distance of 0.07 AU ( 10928708.6 km)
  • (Projected orbit of Kepler-989 b around its host star Kepler-989)


  • The Star Kepler-989 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.435 AU ( 65080913.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.601 AU ( 89958830.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.916 AU ( 137077349.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.348 AU ( 201715324.8 km)
  • Radiation at Planetary Boundary of Kepler-989 b : 92663.56 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-989)



  • Kopparapu Recent Venus for Star Kepler-989 distance : 0.469 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-989 distance : 0.594 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-989 distance : 0.573 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-989 distance : 0.629 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-989 distance : 1.073 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-989 distance : 1.132 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-989)



  • Original Kopparapu Recent Venus for Star Kepler-989 distance : 0.464 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-989 distance : 0.612 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-989 distance : 0.614 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-989 distance : 1.091 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-989 distance : 1.135 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-989)



    (Position in Stellar Map of star Kepler-989 and its Exoplanet Kepler-989 b)



    (Zoomed position in Stellar Map of star Kepler-989 and its Exoplanet Kepler-989 b (zoom level 3))