Use the Zetta PSG to decode and set up the planetary systems, if you want to revisit any of them.
You can also check in the sheet if a system you visited have been visited by someone else, by searching for the 11-letter name. ( highly unlikely to occur though :)
Note that this charting log form has only 4 systems. If you want to log systems from when you have been playing the Lone Star variant or a co-op challenge that takes you to more than 4 systems, please submit this form more than one time.