Riften 5
From Tardis Wiki, the free Doctor Who reference
Riften 5 was a satellite of Vita 15. On Riften 5, the Fifth Doctor visited the vid-archives and saw genetic tests that were run on Daleks after the War of Sharpened Hearts. (NA: Christmas on a Rational Planet)
Lytton was born on Riften 5. (DW: Attack of the Cybermen)