M3Y-565 was a temperate planet in the Pegasus galaxy which held a Stargate. The Atlantis expedition sent a MALP to the planet, which discovered that it was relatively cool with clouds and many trees. Captain Paterson and his team were sent to the planet in the morning of the day that the First Atlantis Reconnaissance Team were sent to M3Y-465. Dr. Rodney McKay believed that they were heading here, so he dressed for a temperate climate. (SGA: "Halcyon")