TOI-2257

Display orbital revolution around the star TOI-2257
Imaginary Picture of Star TOI-2257
Star Name : TOI-2257
Alternate Name :
Star Distance (LY/pc): 800.7955 (LY) 245.5253 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.3110 (Rsun, estimated)
Stellar Mass (Msun): 0.3300 (Msun/observed) 0.3300 (Msun/estimated)
Spectral type : M3
Metalicity : -0.2700
Absolute Magnitude : 8.25
Apparent Magnitude : 15.20
Right Ascension(RA) : 194.74167
Declination(DEC) : 77.66167
  • This is the TOI-2257 . The star TOI-2257 islocated about 800.8 light-years (245.5 pc) away from our Solar System.
  • The star TOI-2257 has apparent magnitude of 15.2, with absolute magnitude of 8.2.
  • It is 0.3 times more massive and 0.3 times bigger compared with our Sun. The surface temperature is 3430 with its spectral types of M3
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet TOI-2257 b radius 0.195740 mass 0.017900 orbital distance 0.145000
    (Illustration of the TOI-2257's Planetary System)



    The Star TOI-2257 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.079 AU ( 11857871.6 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.110 AU ( 16390677.3 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.167 AU ( 24975765.0 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.246 AU ( 36752932.3 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-2257)



    Kopparapu's Recent Venus for Star TOI-2257 distance : 0.090 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star TOI-2257 distance : 0.113 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star TOI-2257 distance : 0.110 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star TOI-2257 distance : 0.120 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star TOI-2257 distance : 0.221 AU
    Kopparapu's Outer Boundary for Early Mars for Star TOI-2257 distance : 0.234 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-2257)



  • Original Kopparapu Recent Venus for Star TOI-2257 distance : 0.089 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-2257 distance : 0.117 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-2257 distance : 0.118 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-2257 distance : 0.225 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-2257 distance : 0.234 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-2257)



    (Position in Stellar Map of star TOI-2257 )



    (Zoomed position in Stellar Map of star TOI-2257 (zoom level 3))

    (Synthetic Spectrum of star K2-19*)
    *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