The Cislunar Autonomous Positioning System Technology Operations and Navigation Experiment (Capstone) is expected to be the first spacecraft to operate in a near rectilinear halo orbit around the Moon.
In this unique orbit, the CubeSat will rotate together with the moon as it orbits Earth and will pass as close as 1,000 miles and as far as 43,500 miles from the lunar surface.
The pathfinder mission represents a rapid lunar flight demonstration and could launch as early as December 2020. Capstone will demonstrate how to enter into and operate in this orbit as well as test a new navigation capability.
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This information will help reduce logistical uncertainty for Gateway, as NASA and international partners work to ensure astronauts have safe access to the moon’s surface. It will also provide a platform for science and technology demonstrations.
Jim Reuter, associate administrator for NASA’s Space Technology Mission Directorate, said, “This is an exciting opportunity for NASA to aggressively push forward towards the moon in partnership with several American small businesses as a vanguard to Artemis and sustained human presence beyond low-Earth orbit.
“This mission is highly ambitious in both cost and schedule – and taking that deliberate risk is part of the objective of this mission – alongside the rapid technological advancement in cislunar navigation and the opportunity to verify orbital trajectory assumptions and retire unknowns for future missions,” Reuter added.
The 12-unit CubeSat is about the size of a small microwave oven. Onboard is a communications system capable of determining how far Capstone is from NASA’s Lunar Reconnaissance Orbiter and how fast the distance between the two spacecraft is changing.
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The inter-spacecraft information will be used to demonstrate software for autonomous navigation, allowing future missions to determine their location without having to rely exclusively on tracking from Earth.
Capstone will provide NASA and its partners with important insights to support exploration of the moon and Mars, including:
- Demonstration of spacecraft-to-spacecraft navigation services;
- Verification of near rectilinear halo orbit characteristics for future spacecraft;
- Experience entering this orbit with a highly efficient lunar transfer;
- Experience with rideshare or small dedicated launches to the moon;
- Commercial experience providing mission planning and operations support services for CubeSats beyond Earth; and
- Rapid commercial delivery of a CubeSat mission beyond Earth orbit.
Advanced Space CEO Bradley Cheetham expanded, “Capstone offers a lot in a small package. Not only will it serve as a pathfinder for Artemis, but it will also demonstrate key exploration-enabling commercial capabilities. Our team will be pioneering state-of-the-art tools for mission planning and operations to enable growth in the number of future missions to the moon, Mars, and throughout the solar system.”
The Capstone team includes Advanced Space and Tyvak Nano-Satellite Systems Inc. of Irvine, California. The project is managed by NASA’s Small Spacecraft Technology (SST) program within the agency’s Space Technology Mission Directorate. Based at NASA's Ames Research Center in California’s Silicon Valley, SST expands US capability to execute unique missions through rapid development and demonstration of capabilities for small spacecraft applicable to exploration, science and the commercial space sector.
Advanced Exploration Systems (AES) within NASA’s Human Exploration and Operations Mission Directorate will fund the launch and support mission operations. AES engages in activities focused on advanced design, development and demonstration of exploration capabilities to reduce risk, lower life cycle cost and validate operational concepts for future human missions.
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