51 Peg

Display orbital revolution around the star 51 Peg
Imaginary Picture of Star 51 Peg
Star Name : 51 Peg
Alternate Name :
Star Distance (LY/pc): 47.9449 (LY) 14.7000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.2660 (Rsun, estimated)
Stellar Mass (Msun): 1.1100 (Msun/observed) 1.1100 (Msun/estimated)
Spectral type : G2 IV
Metalicity : 0.2000
Absolute Magnitude : 4.65
Apparent Magnitude : 5.49
Right Ascension(RA) : 344.36250
Declination(DEC) : 20.76861
  • This is the 51 Peg . The star 51 Peg islocated about 47.9 light-years (14.7 pc) away from our Solar System.
  • The star 51 Peg has apparent magnitude of 5.5, with absolute magnitude of 4.7.
  • It is 1.1 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 5793 with its spectral types of G2 IV
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet 51 Peg b radius 1.900000 mass 0.470000 orbital distance 0.052000
    (Illustration of the 51 Peg's Planetary System)



    The Star 51 Peg 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.920 AU ( 137688882.5 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.272 AU ( 190322018.0 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.939 AU ( 290008637.3 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.853 AU ( 426760414.2 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 51 Peg)



    Kopparapu's Recent Venus for Star 51 Peg distance : 0.953 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star 51 Peg distance : 1.207 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star 51 Peg distance : 1.166 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star 51 Peg distance : 1.278 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star 51 Peg distance : 2.130 AU
    Kopparapu's Outer Boundary for Early Mars for Star 51 Peg distance : 2.247 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star 51 Peg)



  • Original Kopparapu Recent Venus for Star 51 Peg distance : 0.955 AU
  • Original Kopparapu Runaway Greenhouse for Star 51 Peg distance : 1.240 AU
  • Original Kopparapu Moist Greenhouse for Star 51 Peg distance : 1.263 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 51 Peg distance : 2.168 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star 51 Peg distance : 2.255 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star 51 Peg)



    (Position in Stellar Map of star 51 Peg )



    (Zoomed position in Stellar Map of star 51 Peg (zoom level 3))

    (Synthetic Spectrum of star K2-257*)
    *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