Radial velocity curve of the newly discovered SB2 binary QQ Tau (= HII 1286). The RVs measured by us from the APOGEE spectra are marked with purple filled and red open squares, respectively. Our LAMOST MRS RVs are shown with black and magenta asterisks for the primary and secondary component, respectively. The RVs taken near the conjunctions, when only one peak is visible, are marked with large green X symbols. The RV solution for a circular orbit is represented by the full blue and red line for the primary and secondary component, respectively.