[mninm]

Trident missiles (a type of ICBM currently being carried aboard US submarines) do just that.

Once launched a Trident, using a camera, gets a fix on a single specific star. It then uses the data on that star's position to correct for any errors in its internal guidance system.

See: https://en.wikipedia.org/wiki/Trident_(missile)

[ju-st]

There are also star trackers in use by spacecrafts.

https://en.wikipedia.org/wiki/Star_tracker

[xg15]

Wow, I wouldn't have thought that. Thanks much for the information.