Imaginary Picture of Kepler-556 b

Display orbital revolution of Kepler-556 b around the hoststar Kepler-556
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Exoplanet Name : Kepler-556 b
Alternate Name : "2MASS J19220706+3856335 b, K00444.01, KIC 3847138 b, KOI-444 b, KOI-444.01, WISE J192207.06+385633.8 b"
Status : Confirmed
Radius (Rjup / Re): 0.2000 (Rjup) 2.2418 (Rearth)
Mass (Mjup / Me): 0.0176 (Mjup) 5.5894 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1010 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0321
Orbital Period(Observed/Estimated) 11.72 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.1122
Star Radiation at Atmospheric Boundary: 103489.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 800.5 (K)
Blackbody T 0.3(K) 751.8 (K)
Blackbody T 0.7(K) 608.3 (K)
Tidally Locked Blackbody T 0.1(K) 952.0 (K)
Tidally Locked Blackbody T 0.3(K) 894.0 (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-556
Alternate Name : "2MASS J19220706+3856335, KIC 3847138, KOI-444, WISE J192207.06+385633.8"
Star Distance(LY) : 2199.5
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 4.2 (GY)
Temperature : 5641 (K)
Spectral type : G3
UV portion[%]: 7.7
Visible portion[%]: 44.6
IR portion[%]: 47.7
Metalicity : 0.0
Absolute Magnitude: 3.9
Apparent Magnitude: 13.0
Right Ascension(RA) 290.5294
Declination (DEC) 38.9427
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 489 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-556%20b/
Kepler-556 b
Kepler-556 b

  • Kepler-556 b is an exoplanet orbiting the star Kepler-556, located about 2199.5 light-years (674.4 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-556 has apparent magnitude of 13.0, with absolute magnitude of 3.9.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5641 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-556 b orbits around the star Kepler-556 every 11.7 days with its orbital distance of 0.10 AU ( 15108540.3 km)
  • (Projected orbit of Kepler-556 b around its host star Kepler-556)


  • The Star Kepler-556 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.636 AU ( 95082640.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.879 AU ( 131429057.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.339 AU ( 200268797.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.970 AU ( 294704308.9 km)
  • Radiation at Planetary Boundary of Kepler-556 b : 103489.64 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-556)



  • Kopparapu Recent Venus for Star Kepler-556 distance : 0.664 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-556 distance : 0.841 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-556 distance : 0.812 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-556 distance : 0.891 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-556 distance : 1.491 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-556 distance : 1.572 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-556)



  • Original Kopparapu Recent Venus for Star Kepler-556 distance : 0.663 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-556 distance : 0.865 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-556 distance : 0.878 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-556 distance : 1.517 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-556 distance : 1.577 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-556)



    (Position in Stellar Map of star Kepler-556 and its Exoplanet Kepler-556 b)



    (Zoomed position in Stellar Map of star Kepler-556 and its Exoplanet Kepler-556 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-556*)
    *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