Table 6: Orbital solution for the binary stars we discovered in NGC 6913. For binaries #6 and 16 the epoch radial velocities in Table 4 did not allowed a determination of the orbital period and therefore the derivation of the orbit. The errors are given in parenthesis in units of the last digit. The last raw gives the rms deviation of the solution from the observed radial velocities.
orb. element program star #
    1 2 3 4 7 11 12
P (days) 2.70466(1) 1.7075(1) 697(7) 3.51042(5) 3.4588(1) 1.56842(4) 4.0350(5)
e   0.0 0.8(7) 0.21(5) 0.0 0.35(2) 0.4(2) 0.13(9)
K (km s-1) 60.1(7) 26(6) 13.5(6) 50.9(8) 87(2), 125(5) 16(5) 79(6)
$\gamma$ (km s-1) +8.6(5) -17(6) -18.5(6) -15.0(6) -18(3) 0(3) -17(6)
T0 (+2 450 000) 1132.626(4) 1362.2(1) 652(25) 892.40(1) 923.96(6) 782.3(1) 668.7(3)
$\omega$ (deg) 0.0 187(14) 134(12) 0.0 282(7) 283(49) 344(26)
a $\sin i$ (106 km) 2.24(2) 0.4(17) 126(6) 2.45(4) 3.84(9) 0.3(1) 4.3(3)
f(m)   0.061(2) 0.001(9) 0.16(2) 0.048(2) 0.19(1) 0.0005(5) 0.20(4)
rms (km s-1) 1.41 1.09 1.36 1.72 1.57 1.49 1.57


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