Aramuko was a planet, on which the Zokadyll founded the Xenopsychology Library of the Zokadyll.
Astronomical data
The days and nights on Aramuko were longer than those of Earth. (COMIC: Vortex Butterflies) The planet also had multiple moons. (COMIC: The Good Companion)
History
The Tenth Doctor, Gabby, Cindy and Noobis visited Aramuko, where Noobis stayed behind. He met an Osiran, Siffhoni, who was actually Aspect Blue in disguise. (COMIC: Vortex Butterflies)
The Doctor later returned to Aramuko, along with Cindy and Cleopatra Hunsicker, where they met with Noobis and "Siffhoni". While they were there, the Time Sentinels moved the Circle of Transcendence above Aramuko, destroying one of its outer moons. (COMIC: The Good Companion)