HN Lib

Display orbital revolution around the star HN Lib
Imaginary Picture of Star HN Lib
Star Name : HN Lib
Alternate Name : Gliese 555
Star Distance (LY/pc): 20.3945 (LY) 6.2530 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.2990 (Rsun, estimated)
Stellar Mass (Msun): 0.2910 (Msun/observed) 0.2910 (Msun/estimated)
Spectral type : M3.5V
Metalicity : -0.1800
Absolute Magnitude : 12.32
Apparent Magnitude : 11.30
Right Ascension(RA) : 218.57500
Declination(DEC) : -12.51944
  • This is the HN Lib . The star HN Lib islocated about 20.4 light-years ( 6.3 pc) away from our Solar System.
  • The star HN Lib has apparent magnitude of 11.3, with absolute magnitude of 12.3.
  • It is 0.3 times more massive and 0.3 times bigger compared with our Sun. The surface temperature is 3347 with its spectral types of M3.5V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet HN Lib b radius 0.140096 mass 0.017490 orbital distance 0.141700
    (Illustration of the HN Lib's Planetary System)



    The Star HN Lib 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.073 AU ( 10855272.4 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.100 AU ( 15004823.3 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.153 AU ( 22864030.1 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.225 AU ( 33645421.9 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HN Lib)



    Kopparapu's Recent Venus for Star HN Lib distance : 0.082 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HN Lib distance : 0.104 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HN Lib distance : 0.100 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HN Lib distance : 0.110 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HN Lib distance : 0.204 AU
    Kopparapu's Outer Boundary for Early Mars for Star HN Lib distance : 0.215 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HN Lib)



  • Original Kopparapu Recent Venus for Star HN Lib distance : 0.082 AU
  • Original Kopparapu Runaway Greenhouse for Star HN Lib distance : 0.108 AU
  • Original Kopparapu Moist Greenhouse for Star HN Lib distance : 0.108 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HN Lib distance : 0.207 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HN Lib distance : 0.215 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HN Lib)



    (Position in Stellar Map of star HN Lib )



    (Zoomed position in Stellar Map of star HN Lib (zoom level 3))

    (Synthetic Spectrum of star HD 148193 A*)
    *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