pi2 UMa

Display orbital revolution around the star pi2 UMa
Imaginary Picture of Star pi2 UMa
Star Name : pi2 UMa
Alternate Name : 4 UMa
Star Distance (LY/pc): 256.0325 (LY) 78.5000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.1581 (Rsun, estimated)
Stellar Mass (Msun): 1.2340 (Msun/observed) 1.2340 (Msun/estimated)
Spectral type : K1III
Metalicity : -0.2500
Absolute Magnitude : 1.32
Apparent Magnitude : 5.79
Right Ascension(RA) : 130.05417
Declination(DEC) : 64.32806
  • This is the pi2 UMa . The star pi2 UMa islocated about 256.0 light-years (78.5 pc) away from our Solar System.
  • The star pi2 UMa has apparent magnitude of 5.8, with absolute magnitude of 1.3.
  • It is 1.2 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 4415 with its spectral types of K1III
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet pi2 UMa b radius 0.907830 mass 7.100000 orbital distance 0.870000
    (Illustration of the pi2 UMa's Planetary System)



    The Star pi2 UMa 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.489 AU ( 73157123.5 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.676 AU ( 101122262.9 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.030 AU ( 154087950.4 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.516 AU ( 226747169.2 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star pi2 UMa)



    Kopparapu's Recent Venus for Star pi2 UMa distance : 0.453 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star pi2 UMa distance : 0.574 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star pi2 UMa distance : 0.554 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star pi2 UMa distance : 0.607 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star pi2 UMa distance : 1.067 AU
    Kopparapu's Outer Boundary for Early Mars for Star pi2 UMa distance : 1.125 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star pi2 UMa)



  • Original Kopparapu Recent Venus for Star pi2 UMa distance : 0.447 AU
  • Original Kopparapu Runaway Greenhouse for Star pi2 UMa distance : 0.592 AU
  • Original Kopparapu Moist Greenhouse for Star pi2 UMa distance : 0.592 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star pi2 UMa distance : 1.084 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star pi2 UMa distance : 1.128 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star pi2 UMa)



    (Position in Stellar Map of star pi2 UMa )



    (Zoomed position in Stellar Map of star pi2 UMa (zoom level 3))

    (Synthetic Spectrum of star K2-385*)
    *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