Destination ETA
From Elite Wiki
Destination ETA is an OXP for Oolite 1.76 that improves the functionality of the Advanced Space Compass, and is compatible with most HUDs. It was inspired by the distance and time to target function included in Aad-HUD, and still contains a few lines of code copied from that OXP (the vector calculations which are all Greek to me). It also includes a spectroscope function which reveals the additional information about stars added by the Distant Suns OXP.