Imaginary Picture of Kepler-973 b

Display orbital revolution of Kepler-973 b around the hoststar Kepler-973
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Exoplanet Name : Kepler-973 b
Alternate Name : "2MASS J19203966+4955259 b, K01841.01, KIC 11760231 b, KOI-1841 b, KOI-1841.01, WISE J192039.67+495525.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.1750 (Rjup) 1.9616 (Rearth)
Mass (Mjup / Me): 0.0155 (Mjup) 4.9367 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.2513 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1358
Orbital Period(Observed/Estimated) 49.61 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.2830
Star Radiation at Atmospheric Boundary: 10739.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 454.3 (K)
Blackbody T 0.3(K) 426.7 (K)
Blackbody T 0.7(K) 345.2 (K)
Tidally Locked Blackbody T 0.1(K) 540.3 (K)
Tidally Locked Blackbody T 0.3(K) 507.4 (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-973
Alternate Name : "2MASS J19203966+4955259, KIC 11760231, KOI-1841, WISE J192039.67+495525.7"
Star Distance(LY) : 1071.5
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 2.3 (GY)
Temperature : 5181 (K)
Spectral type : K0
UV portion[%]: 5.1
Visible portion[%]: 40.3
IR portion[%]: 54.6
Metalicity : -0.1
Absolute Magnitude: 4.3
Apparent Magnitude: 11.8
Right Ascension(RA) 290.1653
Declination (DEC) 49.9239
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 779 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-973&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-973%20b/
Kepler-973 b
Kepler-973 b

  • Kepler-973 b is an exoplanet orbiting the star Kepler-973, located about 1071.5 light-years (328.5 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-973 has apparent magnitude of 11.8, with absolute magnitude of 4.3.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5181 with its spectral types of K0
  • In this planetary system, the extrasolar planet Kepler-973 b orbits around the star Kepler-973 every 49.6 days with its orbital distance of 0.25 AU ( 37589308.3 km)
  • (Projected orbit of Kepler-973 b around its host star Kepler-973)


  • The Star Kepler-973 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.509 AU ( 76206041.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.704 AU ( 105336664.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.073 AU ( 160509765.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.579 AU ( 236197151.6 km)
  • Radiation at Planetary Boundary of Kepler-973 b : 10739.64 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-973)



  • Kopparapu Recent Venus for Star Kepler-973 distance : 0.546 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-973 distance : 0.691 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-973 distance : 0.668 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-973 distance : 0.733 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-973 distance : 1.245 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-973 distance : 1.313 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-973)



  • Original Kopparapu Recent Venus for Star Kepler-973 distance : 0.541 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-973 distance : 0.712 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-973 distance : 0.716 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-973 distance : 1.266 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-973 distance : 1.316 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-973)



    (Position in Stellar Map of star Kepler-973 and its Exoplanet Kepler-973 b)



    (Zoomed position in Stellar Map of star Kepler-973 and its Exoplanet Kepler-973 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-973*)
    *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