18 Del

Display orbital revolution around the star 18 Del
Imaginary Picture of Star 18 Del
Star Name : 18 Del
Alternate Name :
Star Distance (LY/pc): 245.5994 (LY) 75.3012 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 8.5000 (Rsun, estimated)
Stellar Mass (Msun): 2.3000 (Msun/observed) 2.3000 (Msun/estimated)
Spectral type : G6III
Metalicity : -0.0520
Absolute Magnitude : 1.14
Apparent Magnitude : 5.52
Right Ascension(RA) : 314.60833
Declination(DEC) : 10.83917
  • This is the 18 Del . The star 18 Del islocated about 245.6 light-years (75.3 pc) away from our Solar System.
  • The star 18 Del has apparent magnitude of 5.5, with absolute magnitude of 1.1.
  • It is 2.3 times more massive and 8.5 times bigger compared with our Sun. The surface temperature is 4979 with its spectral types of G6III
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet 18 Del b radius 1.049865 mass 10.300000 orbital distance 2.600000
    (Illustration of the 18 Del's Planetary System)



    The Star 18 Del 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 4.565 AU ( 682906569.7 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 6.310 AU ( 943955344.1 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 9.615 AU ( 1438379047.6 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 14.149 AU ( 2116637779.8 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 18 Del)



    Kopparapu's Recent Venus for Star 18 Del distance : 4.943 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star 18 Del distance : 6.259 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star 18 Del distance : 6.045 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star 18 Del distance : 6.629 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star 18 Del distance : 11.353 AU
    Kopparapu's Outer Boundary for Early Mars for Star 18 Del distance : 11.975 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star 18 Del)



  • Original Kopparapu Recent Venus for Star 18 Del distance : 4.890 AU
  • Original Kopparapu Runaway Greenhouse for Star 18 Del distance : 6.450 AU
  • Original Kopparapu Moist Greenhouse for Star 18 Del distance : 6.470 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 18 Del distance : 11.543 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star 18 Del distance : 12.005 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star 18 Del)



    (Position in Stellar Map of star 18 Del )



    (Zoomed position in Stellar Map of star 18 Del (zoom level 3))

    (Synthetic Spectrum of star LKCA 15*)
    *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