K2-251

Display orbital revolution around the star K2-251
Imaginary Picture of Star K2-251
Star Name : K2-251
Alternate Name : "2MASS J12424541-0832094, EPIC 228758778, WISE J124245.41-083209.3"
Star Distance (LY/pc): 476.9408 (LY) 146.2309 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.4900 (Rsun, estimated)
Stellar Mass (Msun): 0.5200 (Msun/observed) 0.5200 (Msun/estimated)
Spectral type : M2
Metalicity : -0.0400
Absolute Magnitude : 6.52
Apparent Magnitude : 12.34
Right Ascension(RA) : 190.68922
Declination(DEC) : -8.53592
  • This is the K2-251 . The star K2-251 islocated about 476.9 light-years (146.2 pc) away from our Solar System.
  • The star K2-251 has apparent magnitude of 12.3, with absolute magnitude of 6.5.
  • It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3717 with its spectral types of M2
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet K2-251 b radius 0.210000 mass 0.018396 orbital distance 0.069400
    (Illustration of the K2-251's Planetary System)



    The Star K2-251 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.147 AU ( 21940136.0 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.203 AU ( 30327001.6 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.309 AU ( 46211639.0 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.455 AU ( 68002451.2 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-251)



    Kopparapu's Recent Venus for Star K2-251 distance : 0.165 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star K2-251 distance : 0.209 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star K2-251 distance : 0.202 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star K2-251 distance : 0.221 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star K2-251 distance : 0.402 AU
    Kopparapu's Outer Boundary for Early Mars for Star K2-251 distance : 0.425 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-251)



  • Original Kopparapu Recent Venus for Star K2-251 distance : 0.164 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-251 distance : 0.216 AU
  • Original Kopparapu Moist Greenhouse for Star K2-251 distance : 0.216 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-251 distance : 0.409 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-251 distance : 0.425 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-251)



    (Position in Stellar Map of star K2-251 )



    (Zoomed position in Stellar Map of star K2-251 (zoom level 3))

    (Synthetic Spectrum of star Kepler-1039*)
    *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