HR-diagram with evolutionary tracks from Siess et al. (2000). Open symbols are target components with high veiling r_K > 0.2, filled symbols have r_K ≤ 0.2. Typical uncertainties from random errors and the resulting uncertainty from 0.2 mag intrinsic photometric variability (Carpenter et al. 2001) are shown in the lower left. For the determination of the parameters (age & mass, see Table 6), more tracks and isochrones were used than shown in the plot; they were omitted for a clearer illustration.