urn:nasa:pds:context:investigation:mission.apex 1.0 1.25.0.0 Product_Context OSIRIS-APEX Acronym form of name APEX Short form of name 2026-04-15 1.0 Initial version. urn:nasa:pds:context:target:asteroid.99942_apophis investigation_to_target urn:nasa:pds:context:instrument_host:spacecraft.orex investigation_to_instrument_host urn:nasa:pds:context:instrument:rss.orex investigation_to_instrument urn:nasa:pds:context:instrument:prop.orex investigation_to_instrument urn:nasa:pds:context:instrument:tagcams.orex investigation_to_instrument urn:nasa:pds:context:instrument:ocams.orex investigation_to_instrument urn:nasa:pds:context:instrument:ola.orex investigation_to_instrument urn:nasa:pds:context:instrument:otes.orex investigation_to_instrument urn:nasa:pds:context:instrument:ovirs.orex investigation_to_instrument urn:nasa:pds:context:facility:observatory.dsn investigation_to_facility 10.3847/PSJ/acf75e Mathilde M. Westermann, Daniel R. Wibben, Bobby G. Williams, Kenneth Williams, and C. W. V. Wolner, r,ck, The Planetary Science Journal, 4:198 (22pp), 2023 October. Open Source OSIRIS-APEX mission description paper OSIRIS-APEX Mission Mission 2023-09-25 The OSIRIS-APEX mission is an extended mission of the OSIRiS-REx mission. APEX uses the capable OSIRIS-REX spacecraft with its complete instrument suite. APEX will distantly observe Apophis during the 2029 Earth encounter and capture its evolution in real time, revealing the consequences of an asteroid undergoing tidal disturbance by a major planet. Beginning in 2029 June, the spacecraft’s instrument suite will begin providing high resolution data of this “stony” asteroid — advancing knowledge of these objects and their connection to meteorites.