psi1 Dra B

Display orbital revolution around the star psi1 Dra B
Imaginary Picture of Star psi1 Dra B
Star Name : psi1 Dra B
Alternate Name : "31 Dra B, HD 162004"
Star Distance (LY/pc): 72.2762 (LY) 22.1600 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.1284 (Rsun, estimated)
Stellar Mass (Msun): 1.1900 (Msun/observed) 1.1900 (Msun/estimated)
Spectral type : G0V
Metalicity : 0.0100
Absolute Magnitude : 3.97
Apparent Magnitude : 5.70
Right Ascension(RA) : 265.49167
Declination(DEC) : 72.15694
  • This is the psi1 Dra B . The star psi1 Dra B islocated about 72.3 light-years (22.2 pc) away from our Solar System.
  • The star psi1 Dra B has apparent magnitude of 5.7, with absolute magnitude of 4.0.
  • It is 1.2 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 6212 with its spectral types of G0V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet psi1 Dra Bb radius 0.907830 mass 1.530000 orbital distance 4.430000
    (Illustration of the psi1 Dra B's Planetary System)



    The Star psi1 Dra B 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.943 AU ( 141112587.1 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.304 AU ( 195054472.5 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.987 AU ( 297219850.6 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.924 AU ( 437372030.6 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star psi1 Dra B)



    Kopparapu's Recent Venus for Star psi1 Dra B distance : 0.800 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star psi1 Dra B distance : 1.013 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star psi1 Dra B distance : 0.978 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star psi1 Dra B distance : 1.072 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star psi1 Dra B distance : 1.771 AU
    Kopparapu's Outer Boundary for Early Mars for Star psi1 Dra B distance : 1.868 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star psi1 Dra B)



  • Original Kopparapu Recent Venus for Star psi1 Dra B distance : 0.808 AU
  • Original Kopparapu Runaway Greenhouse for Star psi1 Dra B distance : 1.039 AU
  • Original Kopparapu Moist Greenhouse for Star psi1 Dra B distance : 1.069 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star psi1 Dra B distance : 1.803 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star psi1 Dra B distance : 1.875 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star psi1 Dra B)



    (Position in Stellar Map of star psi1 Dra B )



    (Zoomed position in Stellar Map of star psi1 Dra B (zoom level 3))

    (Synthetic Spectrum of star K2-387*)
    *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