[PeteF]

I'm sorry if this question is stupid, however I'm new to astronomy and couldn't find an answer through the usual searches.

I've noted that many of the stars I've seen with the naked eye are often binary stars orbiting each other and with the telescope I can differentiate the different stars. I wondered if there are some with orbital periods fast enough to be able to detect angular changes between the two stars over a period of time (ie weeks/months)? I've tried to work that out for myself using planetarium software, but can't determine if the changes are from the stars normal annual movement and therefore change in perspective, or even if the apps model that relationship properly in the first place.