Table 4: New combined orbit of 41 Dra.
Element Value Error
Period P, days 1246.680 0.004
Periastron epoch T, JD 2 449 571.037 0.008
Eccentricity e 0.9754 0.0001
Semi-major axis a, arcsec 0.0706 0.0014
Position angle of node $\Omega_{a}$, deg 1.9 1.7
Argument of periastron $\omega_{a}$, deg 127.31 0.13
Inclination i, deg 49.7 2.9
Primary amplitude K1, km s-1 44.62 0.10
Secondary amplitude K2, km s-1 48.06 0.11
System velocity V0, km s-1 5.76 0.05
Primary mass, $M_\odot$ 1.28 0.15
Secondary mass, $M_\odot$ 1.20 0.14
Orbital parallax, mas 23.0 2.2


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