pi1 Cnc (AB)

Display orbital revolution around the star pi1 Cnc (AB)
Imaginary Picture of Star pi1 Cnc (AB)
Star Name : pi1 Cnc (AB)
Alternate Name : "81 Cnc, GJ 337"
Star Distance (LY/pc): 66.8620 (LY) 20.5000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.1350 (Rsun, estimated)
Stellar Mass (Msun): 0.9890 (Msun/observed) 0.9890 (Msun/estimated)
Spectral type : G8V+K1V
Metalicity : 0.0000
Absolute Magnitude : 4.95
Apparent Magnitude : 6.51
Right Ascension(RA) : 138.07311
Declination(DEC) : 14.99605
  • This is the pi1 Cnc (AB) . The star pi1 Cnc (AB) islocated about 66.9 light-years (20.5 pc) away from our Solar System.
  • The star pi1 Cnc (AB) has apparent magnitude of 6.5, with absolute magnitude of 5.0.
  • It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5394 with its spectral types of G8V+K1V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet pi1 Cnc C radius 0.907830 mass 55.000000 orbital distance 880.000000
    (Illustration of the pi1 Cnc (AB)'s Planetary System)



    The Star pi1 Cnc (AB) 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.715 AU ( 107022688.9 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.989 AU ( 147933324.4 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.507 AU ( 225417648.9 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.217 AU ( 331711945.2 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star pi1 Cnc (AB))



    Kopparapu's Recent Venus for Star pi1 Cnc (AB) distance : 0.758 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star pi1 Cnc (AB) distance : 0.960 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star pi1 Cnc (AB) distance : 0.927 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star pi1 Cnc (AB) distance : 1.017 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star pi1 Cnc (AB) distance : 1.715 AU
    Kopparapu's Outer Boundary for Early Mars for Star pi1 Cnc (AB) distance : 1.809 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star pi1 Cnc (AB))



  • Original Kopparapu Recent Venus for Star pi1 Cnc (AB) distance : 0.754 AU
  • Original Kopparapu Runaway Greenhouse for Star pi1 Cnc (AB) distance : 0.988 AU
  • Original Kopparapu Moist Greenhouse for Star pi1 Cnc (AB) distance : 0.998 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star pi1 Cnc (AB) distance : 1.745 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star pi1 Cnc (AB) distance : 1.814 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star pi1 Cnc (AB))



    (Position in Stellar Map of star pi1 Cnc (AB) )



    (Zoomed position in Stellar Map of star pi1 Cnc (AB) (zoom level 3))

    (Synthetic Spectrum of star K2-384*)
    *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