Vandor Prime, or Gamma Delphinus IV, was the fourth planet of the Gamma Delphinus system. Bernice Summerfield spent the early years of her life there. (PROSE: Sanctuary) She remembered black ships in the sky of the planet firing at random at the colonists. She watched as her mother, Claire Summerfield, was killed in the attack. (PROSE: Beige Planet Mars)
The Sixth Doctor visited Vandor Prime trying to find out who was trying to assassinate him. (PROSE: Mission: Impractical)