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NEO Surveyor (for Near-Earth Object Surveyor, earlier known as NEOCam for Near-Earth Object Camera and NEOSM, for Near-Earth Object Surveillance Mission) is a mission plan for a NASA 50 cm infrared space telescope with a wide field of view orbiting the L1 Lagrangian point with the aim of detecting and monitoring near-Earth objects (NEOs). The plan aims at a 2026 launch and a mission of 12+ years. Infrared brightness is a better indication of the object's size: more of the object's infrared is due to its own emission, whereas much of the visible light is the reflection of Sun-light, which is substantially affected by the object's albedo. Visible light follow-ups can be done from the ground, the two measurements together yielding a determination of the object's albedo, a clue to its makeup and mass. The mission is much like NEOWISE, which is a secondary function and reuse of Wide-field Infrared Survey Explorer (WISE), but will take advantage of newer technology that also is designed for the purpose.