Peladon was the home planet of the Peladonians.
Peladon was similar to Earth in temperature, gravity and atmosphere. It was known for being especially stormy, and dangers from the wind and rain were constant. Peladon had 3 moons, which made navigation difficult.
These constant storms meant that plants were difficult to grow, since there generally was not enough sunlight. (NA: Legacy)
The planet was rich in trisilicate (DW: The Monster of Peladon) and granite, but had no chalk. (NA: Legacy)
Native species include the Peladonians, the Aggedor (DW: The Curse of Peladon) and the Equinna (NA: Legacy).
At some point between the 26th and 29th century, humans occupied, and even became dignitaries on the planet, one such being Lady Rosilie of Peladon. (TDL: The Graves of Mordane)