Imaginary Picture of Kepler-689 b

Display orbital revolution of Kepler-689 b around the hoststar Kepler-689
/
Exoplanet Name : Kepler-689 b
Alternate Name : "2MASS J19385054+3931182 b, K00814.01, KIC 4476123 b, KOI-814 b, KOI-814.01, WISE J193850.54+393118.1 b"
Status : Confirmed
Radius (Rjup / Re): 0.2580 (Rjup) 2.8919 (Rearth)
Mass (Mjup / Me): 0.0223 (Mjup) 7.0830 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1506 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0612
Orbital Period(Observed/Estimated) 22.37 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.8469
Star Radiation at Atmospheric Boundary: 44717.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 649.0 (K)
Blackbody T 0.3(K) 609.5 (K)
Blackbody T 0.7(K) 493.2 (K)
Tidally Locked Blackbody T 0.1(K) 771.8 (K)
Tidally Locked Blackbody T 0.3(K) 724.8 (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-689
Alternate Name : "2MASS J19385054+3931182, KIC 4476123, KOI-814, WISE J193850.54+393118.1"
Star Distance(LY) : 3697.9
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 4.6 (GY)
Temperature : 5397 (K)
Spectral type : G7
UV portion[%]: 7.0
Visible portion[%]: 43.3
IR portion[%]: 49.7
Metalicity : -0.0
Absolute Magnitude: 4.0
Apparent Magnitude: 14.2
Right Ascension(RA) 294.7106
Declination (DEC) 39.5217
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 591 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-689%20b/
Kepler-689 b
Kepler-689 b

  • Kepler-689 b is an exoplanet orbiting the star Kepler-689, located about 3697.9 light-years (1133.8 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-689 has apparent magnitude of 14.2, with absolute magnitude of 4.0.
  • It is 0.9 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5397 with its spectral types of G7
  • In this planetary system, the extrasolar planet Kepler-689 b orbits around the star Kepler-689 every 22.4 days with its orbital distance of 0.15 AU ( 22522254.7 km)
  • (Projected orbit of Kepler-689 b around its host star Kepler-689)


  • The Star Kepler-689 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.623 AU ( 93170859.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.861 AU ( 128786476.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.312 AU ( 196242089.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.930 AU ( 288778831.1 km)
  • Radiation at Planetary Boundary of Kepler-689 b : 44717.33 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-689)



  • Kopparapu Recent Venus for Star Kepler-689 distance : 0.660 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-689 distance : 0.836 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-689 distance : 0.807 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-689 distance : 0.885 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-689 distance : 1.493 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-689 distance : 1.575 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-689)



  • Original Kopparapu Recent Venus for Star Kepler-689 distance : 0.656 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-689 distance : 0.860 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-689 distance : 0.868 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-689 distance : 1.518 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-689 distance : 1.579 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-689)



    (Position in Stellar Map of star Kepler-689 and its Exoplanet Kepler-689 b)



    (Zoomed position in Stellar Map of star Kepler-689 and its Exoplanet Kepler-689 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-689*)
    *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