NN Ser (AB)
Imaginary Picture of Star NN Ser (AB)
Star Name : NN Ser (AB)
Alternate Name :
Star Distance (LY/pc): 1630.7800 (LY) 500.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.5728 (Rsun, estimated)
Stellar Mass (Msun): 0.6460 (Msun/observed) 0.6460 (Msun/estimated)
Spectral type : WD+M
Metalicity : 0.0000
Absolute Magnitude : 8.11
Apparent Magnitude : 16.60
Right Ascension(RA) : 238.23388
Declination(DEC) : 12.91306
  • This is the NN Ser (AB) . The star NN Ser (AB) islocated about 1630.8 light-years (500.0 pc) away from our Solar System.
  • The star NN Ser (AB) has apparent magnitude of 16.6, with absolute magnitude of 8.1.
  • It is 0.6 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 5500 with its spectral types of WD+M
  • Number of Extrasolar Planets : 2
  • Name of the 1 Planet NN Ser (AB) c radius 0.907830 mass 6.910000 orbital distance 5.380000
  • Name of the 2 Planet NN Ser (AB) d radius 0.907830 mass 2.280000 orbital distance 3.390000
    (Illustration of the NN Ser (AB)'s Planetary System)



    The Star NN Ser (AB) 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.375 AU ( 56156150.6 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.519 AU ( 77622475.5 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.791 AU ( 118279474.8 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.163 AU ( 174053428.7 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star NN Ser (AB))



    Kopparapu's Recent Venus for Star NN Ser (AB) distance : 0.762 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star NN Ser (AB) distance : 0.965 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star NN Ser (AB) distance : 0.932 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star NN Ser (AB) distance : 1.022 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star NN Ser (AB) distance : 1.718 AU
    Kopparapu's Outer Boundary for Early Mars for Star NN Ser (AB) distance : 1.812 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star NN Ser (AB))



  • Original Kopparapu Recent Venus for Star NN Ser (AB) distance : 0.759 AU
  • Original Kopparapu Runaway Greenhouse for Star NN Ser (AB) distance : 0.992 AU
  • Original Kopparapu Moist Greenhouse for Star NN Ser (AB) distance : 1.004 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star NN Ser (AB) distance : 1.747 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star NN Ser (AB) distance : 1.817 AU

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



    (Position in Stellar Map of star NN Ser (AB) )



    (Zoomed position in Stellar Map of star NN Ser (AB) (zoom level 3))