8 Umi

Display orbital revolution around the star 8 Umi
Imaginary Picture of Star 8 Umi
Star Name : 8 Umi
Alternate Name :
Star Distance (LY/pc): 531.1987 (LY) 162.8664 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 9.9000 (Rsun, estimated)
Stellar Mass (Msun): 1.8000 (Msun/observed) 1.8000 (Msun/estimated)
Spectral type : K0
Metalicity : -0.0300
Absolute Magnitude : 0.77
Apparent Magnitude : 6.83
Right Ascension(RA) : 224.20000
Declination(DEC) : 74.90083
  • This is the 8 Umi . The star 8 Umi islocated about 531.2 light-years (162.9 pc) away from our Solar System.
  • The star 8 Umi has apparent magnitude of 6.8, with absolute magnitude of 0.8.
  • It is 1.8 times more massive and 9.9 times bigger compared with our Sun. The surface temperature is 4847 with its spectral types of K0
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet 8 Umi b radius 1.049898 mass 1.650000 orbital distance 0.462000
    (Illustration of the 8 Umi's Planetary System)



    The Star 8 Umi 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 5.039 AU ( 753770864.2 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 6.965 AU ( 1041908318.3 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 10.613 AU ( 1587637703.2 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 15.617 AU ( 2336278430.2 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 8 Umi)



    Kopparapu's Recent Venus for Star 8 Umi distance : 5.489 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star 8 Umi distance : 6.950 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star 8 Umi distance : 6.712 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star 8 Umi distance : 7.361 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star 8 Umi distance : 12.675 AU
    Kopparapu's Outer Boundary for Early Mars for Star 8 Umi distance : 13.370 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star 8 Umi)



  • Original Kopparapu Recent Venus for Star 8 Umi distance : 5.424 AU
  • Original Kopparapu Runaway Greenhouse for Star 8 Umi distance : 7.166 AU
  • Original Kopparapu Moist Greenhouse for Star 8 Umi distance : 7.177 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 8 Umi distance : 12.886 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star 8 Umi distance : 13.401 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star 8 Umi)



    (Position in Stellar Map of star 8 Umi )



    (Zoomed position in Stellar Map of star 8 Umi (zoom level 3))

    (Synthetic Spectrum of star LTT 9779*)
    *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