USA-207,[4] international COSPAR code 2009-047A,[5] also known as PAN, officially meaning Palladium at Night,[6] NEMESIS I,[7] or P360[8] is a classified American SIGINT satellite,[7] which was launched in September 2009.

The US government has not confirmed which of its intelligence agencies operate the satellite,[9] but leaked documents from the Snowden files point to the NSA.

[10] The spacecraft was constructed by Lockheed Martin, and is based on the A2100 satellite bus,[6] using commercial off-the-shelf components.

[8] The contract to build PAN was awarded in October 2006, with the satellite initially scheduled to launch 30 months later, in March 2009.

[13] PAN has shown an unusual history of frequent relocations during the first 5 years of its operations, moving between at least 9 different orbital slots since launch.