A point of light moving between the stars
It's almost definitely not alien, if that's what you're asking.

A satellite in low Earth orbit (around 200 km altitude) would have needed to move about 60m in the time you noticed it for the movement to have been visible. So, given that satellites at this altitude generally travel at around 7km/s or 7000 metres per second, it is not inconceivable that it could have been a man-made satellite correcting its orbit.