Vega VI

Vega VI (or Vega 6) was the sixth planet in the Vega System. A world with vast marshlands, it was rich in Veganite deposits. This world, along with many others, was conquered by the Daleks during the invasion of Mutter's Spiral in 4162 and the Second Great Dalek Occupation. It was exploited for its resources, the Veganite in particular. (AUDIO: Invasion of the Daleks) The famous singer Siryo was killed during the invasion. (PROSE: Kalendorf)

After the Dalek War, a museum was built there, dedicated to the war. During the late 42nd century, the Eighth Doctor and Kalendorf witnessed a child being killed by a seemingly inert Dalek while there. (PROSE: Museum Peace)

Behind the scenes
It's unclear whether Vega VI is in the same system as Vega or Vega 3.