V391 Peg

Display orbital revolution around the star V391 Peg
Imaginary Picture of Star V391 Peg
Star Name : V391 Peg
Alternate Name :
Star Distance (LY/pc): 4566.1840 (LY) 1400.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.2300 (Rsun, estimated)
Stellar Mass (Msun): 0.5000 (Msun/observed) 0.5000 (Msun/estimated)
Spectral type : sdB
Metalicity : 0.0000
Absolute Magnitude : 3.84
Apparent Magnitude : 14.57
Right Ascension(RA) : 331.05045
Declination(DEC) : 26.41889
  • This is the V391 Peg . The star V391 Peg islocated about 4566.2 light-years (1400.0 pc) away from our Solar System.
  • The star V391 Peg has apparent magnitude of 14.6, with absolute magnitude of 3.8.
  • It is 0.5 times more massive and 0.2 times bigger compared with our Sun. The surface temperature is 29300 with its spectral types of sdB
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet V391 Peg b radius 1.049879 mass 3.200000 orbital distance 1.700000
    (Illustration of the V391 Peg's Planetary System)



    The Star V391 Peg 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 4.278 AU ( 639913377.4 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 5.913 AU ( 884527516.9 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 9.010 AU ( 1347824190.2 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 13.258 AU ( 1983382340.3 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star V391 Peg)



    Kopparapu's Recent Venus for Star V391 Peg distance : nan AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star V391 Peg distance : nan AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star V391 Peg distance : nan AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star V391 Peg distance : nan AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star V391 Peg distance : nan AU
    Kopparapu's Outer Boundary for Early Mars for Star V391 Peg distance : nan AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star V391 Peg)



  • Original Kopparapu Recent Venus for Star V391 Peg distance : nan AU
  • Original Kopparapu Runaway Greenhouse for Star V391 Peg distance : nan AU
  • Original Kopparapu Moist Greenhouse for Star V391 Peg distance : nan AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star V391 Peg distance : nan AU
  • Original Kopparapu Outer Boundary for Early Mars for Star V391 Peg distance : nan AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star V391 Peg)



    (Position in Stellar Map of star V391 Peg )



    (Zoomed position in Stellar Map of star V391 Peg (zoom level 3))

    (Synthetic Spectrum of star K2-169*)
    *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