Imaginary Picture of Kepler-1090 c

Display orbital revolution of Kepler-1090 c around the hoststar Kepler-1090
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Exoplanet Name : Kepler-1090 c
Alternate Name : "KOI-2094 c, KOI-2094.01"
Status : Confirmed
Radius (Rjup / Re): 0.2937 (Rjup) 3.2920 (Rearth)
Mass (Mjup / Me): 0.0251 (Mjup) 7.9900 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2274 (AU) 0.2274 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1162
Orbital Period(Observed/Estimated) 42.43 (Days Obs.) 41.98 (Days Est.)
Surface Gravity (G Earth) 0.7373
Star Radiation at Atmospheric Boundary: 18818.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 522.7 (K)
Blackbody T 0.3(K) 490.9 (K)
Blackbody T 0.7(K) 397.2 (K)
Tidally Locked Blackbody T 0.1(K) 621.7 (K)
Tidally Locked Blackbody T 0.3(K) 583.8 (K)
Size Class: Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-1090
Alternate Name : "2MASS J19423908+4431330, KIC 8505920, KOI-2094, WISE J194239.09+443132.9"
Star Distance(LY) : 2800.9
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 4.4 (GY)
Temperature : 5217 (K)
Spectral type : G8V
UV portion[%]: 5.1
Visible portion[%]: 40.4
IR portion[%]: 54.5
Metalicity : -0.0
Absolute Magnitude: 5.6
Apparent Magnitude: 15.3
Right Ascension(RA) 295.6629
Declination (DEC) 44.5258
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-1090 c
Kepler-1090 c

  • Kepler-1090 c is an exoplanet orbiting the star Kepler-1090, located about 2800.9 light-years (858.8 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1090 has apparent magnitude of 15.3, with absolute magnitude of 5.6.
  • It is 0.9 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5217 with its spectral types of G8V
  • In this planetary system, the extrasolar planet Kepler-1090 c orbits around the star Kepler-1090 every 42.4 days with its orbital distance of 0.23 AU ( 34018555.8 km)
  • (Projected orbit of Kepler-1090 c around its host star Kepler-1090)


  • The Star Kepler-1090 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.610 AU ( 91293558.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.844 AU ( 126191555.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.285 AU ( 192288004.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.891 AU ( 282960222.7 km)
  • Radiation at Planetary Boundary of Kepler-1090 c : 18818.63 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1090)



  • Kopparapu Recent Venus for Star Kepler-1090 distance : 0.653 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1090 distance : 0.827 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1090 distance : 0.799 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1090 distance : 0.876 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1090 distance : 1.486 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1090 distance : 1.568 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1090)



  • Original Kopparapu Recent Venus for Star Kepler-1090 distance : 0.648 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1090 distance : 0.851 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1090 distance : 0.857 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1090 distance : 1.512 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1090 distance : 1.572 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1090)



    (Position in Stellar Map of star Kepler-1090 and its Exoplanet Kepler-1090 c)



    (Zoomed position in Stellar Map of star Kepler-1090 and its Exoplanet Kepler-1090 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-1090*)
    *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