Rigel IV was a planet.

After an unpleasant experience on Rigel IV, the Sixth Doctor tried to take Peri to a party in London 1899 but ended up arriving in Africa at the same time, becoming caught up in a conflict in the Boer Wars where they narrowly saved Winston Churchill from an assassin. (PROSEPlayers)

In the 26th century, materra was imported from Rigel IV to Megerra. (PROSE: Shakedown)

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