Kepler-1021

Display orbital revolution around the star Kepler-1021
Imaginary Picture of Star Kepler-1021
Star Name : Kepler-1021
Alternate Name : "2MASS J19404917+4233348, KIC 7045496, KOI-1939"
Star Distance (LY/pc): 2729.9257 (LY) 837.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.8600 (Rsun, estimated)
Stellar Mass (Msun): 0.8900 (Msun/observed) 0.8900 (Msun/estimated)
Spectral type : G7
Metalicity : -0.0500
Absolute Magnitude : 4.22
Apparent Magnitude : 13.83
Right Ascension(RA) : 295.20490
Declination(DEC) : 42.55968
  • This is the Kepler-1021 . The star Kepler-1021 islocated about 2729.9 light-years (837.0 pc) away from our Solar System.
  • The star Kepler-1021 has apparent magnitude of 13.8, with absolute magnitude of 4.2.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5431 with its spectral types of G7
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet Kepler-1021 b radius 0.208000 mass 0.018233 orbital distance 0.000000
    (Illustration of the Kepler-1021's Planetary System)



    The Star Kepler-1021 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.550 AU ( 82208395.0 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.760 AU ( 113633485.5 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.157 AU ( 173152284.9 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.703 AU ( 254801172.5 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1021)



    Kopparapu's Recent Venus for Star Kepler-1021 distance : 0.581 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star Kepler-1021 distance : 0.736 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1021 distance : 0.711 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star Kepler-1021 distance : 0.780 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star Kepler-1021 distance : 1.313 AU
    Kopparapu's Outer Boundary for Early Mars for Star Kepler-1021 distance : 1.385 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1021)



  • Original Kopparapu Recent Venus for Star Kepler-1021 distance : 0.578 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1021 distance : 0.757 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1021 distance : 0.765 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1021 distance : 1.336 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1021 distance : 1.389 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1021)



    (Position in Stellar Map of star Kepler-1021 )



    (Zoomed position in Stellar Map of star Kepler-1021 (zoom level 3))

    (Synthetic Spectrum of star Kepler-251*)
    *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