DoAr 21 (AB)

Display orbital revolution around the star DoAr 21 (AB)
Imaginary Picture of Star DoAr 21 (AB)
Star Name : DoAr 21 (AB)
Alternate Name : "*V2246 Oph, Haro 1-6, ISO-Oph 10, EPIC 203924502"
Star Distance (LY/pc): 439.0060 (LY) 134.6000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 4.0600 (Rsun, estimated)
Stellar Mass (Msun): 2.0400 (Msun/observed) 2.0400 (Msun/estimated)
Spectral type : K0 + M3
Metalicity : 0.0000
Absolute Magnitude : 8.35
Apparent Magnitude : 14.00
Right Ascension(RA) : 246.51250
Declination(DEC) : -24.39333
  • This is the DoAr 21 (AB) . The star DoAr 21 (AB) islocated about 439.0 light-years (134.6 pc) away from our Solar System.
  • The star DoAr 21 (AB) has apparent magnitude of 14.0, with absolute magnitude of 8.4.
  • It is 2.0 times more massive and 4.1 times bigger compared with our Sun. The surface temperature is 5080 with its spectral types of K0 + M3
  • Number of Extrasolar Planets : 2
  • Name of the 1 Planet DoAr 21 (AB)b radius 1.049860 mass 35.600000 orbital distance 1.550000
  • Name of the 2 Planet DoAr 21 (AB)c radius 0.907830 mass 44.000000 orbital distance 2.800000
    (Illustration of the DoAr 21 (AB)'s Planetary System)



    The Star DoAr 21 (AB) 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 2.270 AU ( 339556126.4 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 3.137 AU ( 469355303.3 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 4.781 AU ( 715193614.2 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 7.035 AU ( 1052438733.9 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star DoAr 21 (AB))



    Kopparapu's Recent Venus for Star DoAr 21 (AB) distance : 2.446 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star DoAr 21 (AB) distance : 3.097 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star DoAr 21 (AB) distance : 2.991 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star DoAr 21 (AB) distance : 3.280 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star DoAr 21 (AB) distance : 5.595 AU
    Kopparapu's Outer Boundary for Early Mars for Star DoAr 21 (AB) distance : 5.902 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star DoAr 21 (AB))



  • Original Kopparapu Recent Venus for Star DoAr 21 (AB) distance : 2.422 AU
  • Original Kopparapu Runaway Greenhouse for Star DoAr 21 (AB) distance : 3.190 AU
  • Original Kopparapu Moist Greenhouse for Star DoAr 21 (AB) distance : 3.205 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star DoAr 21 (AB) distance : 5.690 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star DoAr 21 (AB) distance : 5.917 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star DoAr 21 (AB))



    (Position in Stellar Map of star DoAr 21 (AB) )



    (Zoomed position in Stellar Map of star DoAr 21 (AB) (zoom level 3))

    (Synthetic Spectrum of star CoRoT-19*)
    *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