CELTEE 1 (CubeSat Enhanced Locator Transponder Evaluation Experiment 1) is picosatellite built by M42 Technologies (Seattle,WA) for the Air Force Research Laboratory (AFRL). It is built to the 1U CubeSat form factor.
The objective of the CELTEE 1 CubeSat is to evaluate the performance of M42 Techs Enhanced Location Transponder (ELT) small satellite tracking and orbit determination technology. It is a short duration (3-6 month) experiment operating in low-Earth orbit.
CELTEE 1 was launched in November 2016 on an Atlas-5(401) rocket as a NRO sponsored piggy-back payload.