Peladon Peladon was the home planet of the Peladonian s . Astronomical data . Peladon was similar to Earth in temperature , gravity and atmosphere . It had three moon s , which made navigation difficult . It was known for being especially stormy . Dangers from the wind and rain were constant . These constant storms meant that plants were difficult to grow , since there generally was not enough sunlight ( PROSE : " Legacy " ) even though Peladon had more than one parent star . ( AUDIO : " The Bride of Peladon " ) One of the major locations was Mount Megeshra . ( TV : " The Monster of Peladon " ) The planet was rich in trisilicate ( TV : " The Monster of Peladon " ) and granite , but had no chalk . ( PROSE : " Legacy " ) Native species included the Peladonian s , the Aggedor ( TV : " The Curse of Peladon " ) and the Equinna . ( PROSE : " Legacy " ) History . Around 6100 BC , the Osiran Sekhmet was banished from Phaester Osiris in a trisilicate spacecraft . She landed on Peladon , where she lay for ten thousand years . ( AUDIO : " The Bride of Peladon " ) Early in Peladon ' s history , King Erak tried to conquer the whole planet , but was overthrown by Gart and his son Sherak . Gart allowed Sherak to take the credit and become king . ( PROSE : " Legacy " ) At some point between the 26th and 29th century , human s occupied and even became dignitaries on the planet . One such was Lady Rosilie of Peladon . ( PROSE : " The Graves of Mordane " ) In 3864 , Princess Ellua of Earth crashed on Peladon . After King Kellian helped her contact the Galactic Federation , he fell in love and married her . Though Peladon applied to join the Galactic Federation , they decided that Peladon needed more time to develop and planned to return in 3885 . In 3865 , Ellua had a son named Peladon . In 3877 Kellian died in a hunting accident and Peladon accended to the throne after this . ( PROSE : " Legacy " ) Circa 3885 , Peladon of Peladon was king and was trying to get Peladon accepted into the Galactic Federation , a move opposed by more conservative Peladonians , such as High Priest Hepesh . The Time Lord s sent the Third Doctor and Jo Grant to Peladon to help the process . ( TV : " The Curse of Peladon " ) In the later years of Peladon ' s reign , he opened Peladon to refugee Ice Warrior s from the New Martian Republic . ( AUDIO : " The Prisoner of Peladon " ) Circa 3935 , during the Federation ' s war with Galaxy 5 , the planet was found to contain trisilicate , which was vital for the war effort . The lower classes were forced into mining the trisilicate , which caused further unrest between the classes . A mining engineer from Earth , Eckersley , was sent to Peladon but was secretly working with Galaxy 5 . Ice Warriors declared martial law on Peladon after Federation Troops were summoned in response to the miners revolting . They were part of a rogue faction and were working with Eckersley . With the help of the Third Doctor and Sarah Jane Smith , the Ice Warriors and Eckersley were defeated . ( TV : " The Monster of Peladon " ) In 3985 , King Tarrol invited Federation delegates to Peladon for his coronation . During this event , many of the sacred artefacts were stolen . The Seventh Doctor was accused of the murder of Lianna and " executed " , all alien s were banished from Peladon , the Ice Warrior delegate Savaar was blamed and " executed " for attacking the High Priestess Atissa and the Diadem , an ancient artefact of evil , was brought to Peladon . In the end , the problems were solved , but the Advisor Geban was killed by the criminal Nic Reece and the High Priestess Atissa left for the dark side of Mount Megeshra . Seeing the destruction that had been done , King Tarrol decided that Peladon needed to see if it could survive on its own . He severed all ties with the Galactic Federation . Though King Tarrol intended the Federation to return in 4035 to see if more help was needed , the Dalek invasion in the 4010 s meant the collapse of the Federation . ( PROSE : " Legacy " ) According to one account , both the Federation and Peladon ' s ties to it was reasserted by around 4035 . ( AUDIO : " The Bride of Peladon " ) Sarah Jane Smith recalled meeting the Dalek s on Peladon in unseen events . ( AUDIO : " Glorious Goodwood " ) At some point , Elspera became Queen of Peladon . Around 4035 , Sekhmet was awoken by miners mining her trisilicate tomb . She nearly escaped her blood lock by consuming the blood of four female royals , including Elspera , but the fourth , Erimem , had poisoned her blood with mandrake root . The Ice Warrior ambassador , Zixlyr , sealed the tomb by blowing up Sekhmet and the tomb with a Xanthoid volataliser . After she was given a " very crude " transfusion of the Fifth Doctor ' s Time Lord blood and recovered from her poisoning , Erimem left behind travelling in the TARDIS and agreed to be married to the newly - crowned King Pelleas . ( AUDIO : " The Bride of Peladon " )