I'm surprised nobody in this thread has brought this up. When I am exploring, I zoom in on the star in the Galaxy map and when selected it will show you where the stellar bodies are, including distance and position in relation to your entry vector. This way you can know if it is "safe" to hyper into the system from your current system. Doesn't anyone else use this method to avoid "dangerous" binary mishaps?
Doesn't always work - the star map sometimes doesn't like rendering the extra stars.