K2-28

Display orbital revolution around the star K2-28
Imaginary Picture of Star K2-28
Star Name : K2-28
Alternate Name : "EPIC 20631837, 2MASS J22222988-0757195, EPIC 206318379, LP 700-6, WISE J222229.68-075721.8"
Star Distance (LY/pc): 205.8371 (LY) 63.1100 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.2900 (Rsun, estimated)
Stellar Mass (Msun): 0.2600 (Msun/observed) 0.2600 (Msun/estimated)
Spectral type : M4
Metalicity : 0.2600
Absolute Magnitude : 7.69
Apparent Magnitude : 11.70
Right Ascension(RA) : 335.62450
Declination(DEC) : -7.95537
  • This is the K2-28 . The star K2-28 islocated about 205.8 light-years (63.1 pc) away from our Solar System.
  • The star K2-28 has apparent magnitude of 11.7, with absolute magnitude of 7.7.
  • It is 0.3 times more massive and 0.3 times bigger compared with our Sun. The surface temperature is 3214 with its spectral types of M4
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet K2-28 b radius 0.207000 mass 0.018152 orbital distance 0.021400
    (Illustration of the K2-28's Planetary System)



    The Star K2-28 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.065 AU ( 9708404.3 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.090 AU ( 13419551.9 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.137 AU ( 20448427.3 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.201 AU ( 30090756.6 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-28)



    Kopparapu's Recent Venus for Star K2-28 distance : 0.074 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star K2-28 distance : 0.093 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star K2-28 distance : 0.090 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star K2-28 distance : 0.098 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star K2-28 distance : 0.184 AU
    Kopparapu's Outer Boundary for Early Mars for Star K2-28 distance : 0.194 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-28)



  • Original Kopparapu Recent Venus for Star K2-28 distance : 0.073 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-28 distance : 0.096 AU
  • Original Kopparapu Moist Greenhouse for Star K2-28 distance : 0.097 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-28 distance : 0.187 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-28 distance : 0.194 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-28)



    (Position in Stellar Map of star K2-28 )



    (Zoomed position in Stellar Map of star K2-28 (zoom level 3))

    (Synthetic Spectrum of star Kepler-772*)
    *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