urn:nasa:pds:context:instrument:lucy.rss 1.3 1.26.0.0 Product_Context Lucy Radio Science Lucy Radio Science Subsystem 2026-09-14 1.3 Updated schema version. Added alias Lucy Radio Science Subsystem. 2025-12-24 1.2 Updated schema version. Removed instrument_to_investigation references. 2025-02-16 1.1 Updated schema version. Adding missing "investigation" references. Corrected typo "deltav" to "delta-V" 2024-06-10 1.0 Initial version urn:nasa:pds:context:instrument_host:spacecraft.lucy instrument_to_instrument_host The Lucy Radio Sceince Investigation and Telecom Subsystem aboard the Lucy spacecraft Radio Science Telecom Subsystem -49 The Lucy Radio Science Investigation uses the spacecraft's X-band telecommunication system to measure the Doppler shift of the spacecraft. The mass of the Trojans imparts a delta-v on the spacecraft. The concept of operations to support the Doppler-shift measurements entails measuring the Doppler signature of the spacecraft before and after the flyby to determine the change in velocity.