Seven spectroscopic orbits in nearby solar-type multiple stars are presented .
The primary of the chromospherically active star HIP 9642 is a 4.8-day double-lined pair ; the outer 420-yr visual orbit is updated , but remains poorly constrained .
HIP 12780 is a quadruple system consisting of the resolved 6.7-yr pair FIN 379 Aa , Ab , for which the combined orbit , masses , and orbital parallax are determined here , and the single-lined binary Ba , Bb with a period of 27.8 days .
HIP 28790 is a young quintuple system composed of two close binaries Aa , Ab and Ba , Bb with periods of 221 and 13 days , respectively , and a single distant component C. Its subsystem Ba , Bb is peculiar , having the spectroscopic mass ratio of 0.89 but a magnitude difference of \sim 2.2 mag .
HIP 64478 also contains five stars : the A-component is a 29-year visual pair with a previously known 4-day twin subsystem , while the B-component is a contact binary with a period of 5.8 hours , seen nearly pole-on .