Imaginary Picture of Kepler-1722 b

Display orbital revolution of Kepler-1722 b around the hoststar Kepler-1722
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Exoplanet Name : Kepler-1722 b
Alternate Name : "KOI-558 b, KOI-558.01"
Status : Confirmed
Radius (Rjup / Re): 0.2558 (Rjup) 2.8670 (Rearth)
Mass (Mjup / Me): 0.0221 (Mjup) 7.0263 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0819 (AU) 0.0819 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0251
Orbital Period(Observed/Estimated) 9.18 (Days Obs.) 8.83 (Days Est.)
Surface Gravity (G Earth) 0.8548
Star Radiation at Atmospheric Boundary: 137299.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 859.1 (K)
Blackbody T 0.3(K) 806.8 (K)
Blackbody T 0.7(K) 652.8 (K)
Tidally Locked Blackbody T 0.1(K) 1021.7 (K)
Tidally Locked Blackbody T 0.3(K) 959.5 (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-1722
Alternate Name : "5978361, KOI-558, 2MASS J19463905+4115404"
Star Distance(LY) : 2518.8
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 1.4 (GY)
Temperature : 5406 (K)
Spectral type : G6V
UV portion[%]: 6.4
Visible portion[%]: 42.5
IR portion[%]: 51.1
Metalicity : -0.2
Absolute Magnitude: 5.2
Apparent Magnitude: 14.6
Right Ascension(RA) 296.6628
Declination (DEC) 41.2612
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
Kepler-1722 b
Kepler-1722 b

  • Kepler-1722 b is an exoplanet orbiting the star Kepler-1722, located about 2518.8 light-years (772.3 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1722 has apparent magnitude of 14.6, with absolute magnitude of 5.2.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5406 with its spectral types of G6V
  • In this planetary system, the extrasolar planet Kepler-1722 b orbits around the star Kepler-1722 every 9.2 days with its orbital distance of 0.08 AU ( 12252065.6 km)
  • (Projected orbit of Kepler-1722 b around its host star Kepler-1722)


  • The Star Kepler-1722 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.594 AU ( 88812503.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.821 AU ( 122762089.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.250 AU ( 187062256.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.840 AU ( 275270305.0 km)
  • Radiation at Planetary Boundary of Kepler-1722 b : 137299.52 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1722)



  • Kopparapu Recent Venus for Star Kepler-1722 distance : 0.629 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1722 distance : 0.796 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1722 distance : 0.769 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1722 distance : 0.843 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1722 distance : 1.422 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1722 distance : 1.500 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1722)



  • Original Kopparapu Recent Venus for Star Kepler-1722 distance : 0.625 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1722 distance : 0.819 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1722 distance : 0.828 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1722 distance : 1.446 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1722 distance : 1.504 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1722)



    (Position in Stellar Map of star Kepler-1722 and its Exoplanet Kepler-1722 b)



    (Zoomed position in Stellar Map of star Kepler-1722 and its Exoplanet Kepler-1722 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1722*)
    *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