K2-91

Display orbital revolution around the star K2-91
Imaginary Picture of Star K2-91
Star Name : K2-91
Alternate Name : "2MASS J04125232+2412185, EPIC 211077024"
Star Distance (LY/pc): 204.4672 (LY) 62.6900 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.2800 (Rsun, estimated)
Stellar Mass (Msun): 0.2900 (Msun/observed) 0.2900 (Msun/estimated)
Spectral type : M3
Metalicity : 0.0000
Absolute Magnitude : 7.45
Apparent Magnitude : 11.43
Right Ascension(RA) : 63.21806
Declination(DEC) : 24.20511
  • This is the K2-91 . The star K2-91 islocated about 204.5 light-years (62.7 pc) away from our Solar System.
  • The star K2-91 has apparent magnitude of 11.4, with absolute magnitude of 7.4.
  • It is 0.3 times more massive and 0.3 times bigger compared with our Sun. The surface temperature is 3622 with its spectral types of M3
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet K2-91 b radius 0.098000 mass 0.004312 orbital distance 0.016400
    (Illustration of the K2-91's Planetary System)



    The Star K2-91 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.080 AU ( 11904551.4 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.110 AU ( 16455201.1 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.168 AU ( 25074085.0 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.247 AU ( 36897614.5 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-91)



    Kopparapu's Recent Venus for Star K2-91 distance : 0.090 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star K2-91 distance : 0.114 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star K2-91 distance : 0.110 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star K2-91 distance : 0.120 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star K2-91 distance : 0.220 AU
    Kopparapu's Outer Boundary for Early Mars for Star K2-91 distance : 0.232 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-91)



  • Original Kopparapu Recent Venus for Star K2-91 distance : 0.089 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-91 distance : 0.118 AU
  • Original Kopparapu Moist Greenhouse for Star K2-91 distance : 0.118 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-91 distance : 0.223 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-91 distance : 0.232 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-91)



    (Position in Stellar Map of star K2-91 )



    (Zoomed position in Stellar Map of star K2-91 (zoom level 3))

    (Synthetic Spectrum of star Kepler-825*)
    *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