REXIS

E850188

X-ray imaging spectrometer spacecraft instrument

REXIS is an X-ray imaging spectrometer aboard NASA’s OSIRIS-REx spacecraft designed to map elemental abundances on the surface of asteroid Bennu.

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All labels observed (1)

Label	Occurrences
REXIS canonical	2

How this entity was disambiguated

This entity first appeared as the object of triple T10212001 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: REXIS
Context triple: [OSIRIS-REx, scienceInstrument, REXIS]

A. REX
REX is an architecture firm known for its innovative, concept-driven building designs and influential contemporary projects.
B. REX
REX is a radio science experiment instrument aboard NASA's New Horizons spacecraft used to study the atmospheres and surfaces of planetary bodies through radio signal measurements.
C. REX
REX is the radio callsign used by Rex Airlines, a major Australian regional carrier operating domestic passenger services.
D. Arconsat
Arconsat is a small rural commune in central France, located in the Puy-de-Dôme department of the Auvergne-Rhône-Alpes region.
E. DSX (Demonstration and Science Experiments) spacecraft
The DSX (Demonstration and Science Experiments) spacecraft is a U.S. Air Force Research Laboratory mission designed to study the effects of the space environment on spacecraft components and technologies in medium Earth orbit.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: REXIS
Target entity description: REXIS is an X-ray imaging spectrometer aboard NASA’s OSIRIS-REx spacecraft designed to map elemental abundances on the surface of asteroid Bennu.

A. REX
REX is an architecture firm known for its innovative, concept-driven building designs and influential contemporary projects.
B. REX
REX is the radio callsign used by Rex Airlines, a major Australian regional carrier operating domestic passenger services.
C. REX
REX is a radio science experiment instrument aboard NASA's New Horizons spacecraft used to study the atmospheres and surfaces of planetary bodies through radio signal measurements.
D. Arconsat
Arconsat is a small rural commune in central France, located in the Puy-de-Dôme department of the Auvergne-Rhône-Alpes region.
E. DSX (Demonstration and Science Experiments) spacecraft
The DSX (Demonstration and Science Experiments) spacecraft is a U.S. Air Force Research Laboratory mission designed to study the effects of the space environment on spacecraft components and technologies in medium Earth orbit.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	X-ray imaging spectrometer ⓘ spacecraft instrument ⓘ
aboard	OSIRIS-REx ⓘ linked to: OSIRIS-REx asteroid sample return mission
acronymFor	Regolith X-ray Imaging Spectrometer ⓘ
countryOfOrigin	United States ⓘ linked to: United States of America
dataProduct	global elemental abundance maps of Bennu’s surface ⓘ
dataUse	compare Bennu composition with meteorite classes ⓘ support OSIRIS-REx sample site selection ⓘ
discipline	X-ray astronomy instrumentation ⓘ planetary science ⓘ
elementSensitivity	iron ⓘ magnesium ⓘ other mid-Z elements ⓘ silicon ⓘ sulfur ⓘ
fieldOfView	wide-field ⓘ
fullName	Regolith X-ray Imaging Spectrometer ⓘ
fundingAgency	NASA ⓘ
hasComponent	CCD detector array ⓘ coded-aperture mask ⓘ collimator ⓘ solar X-ray monitor ⓘ
hostMissionArrivalAtBennu	2018-12-03 ⓘ
hostMissionLaunchDate	2016-09-08 ⓘ
hostMissionLaunchVehicle	Atlas V 411 ⓘ
hostMissionOperator	NASA Goddard Space Flight Center ⓘ linked to: Goddard Space Flight Center
hostMissionPrimeContractor	Lockheed Martin Space Systems ⓘ linked to: Lockheed Martin Space
hostMissionProgram	NASA New Frontiers Program ⓘ linked to: New Frontiers program
hostMissionType	asteroid sample-return mission ⓘ
isStudentBuilt	true ⓘ
mission	OSIRIS-REx mission ⓘ linked to: OSIRIS-REx asteroid sample return mission
observes	solar-induced X-ray fluorescence from Bennu ⓘ
operationalEnvironment	Bennu proximity operations phase ⓘ
operator	NASA ⓘ
primaryScienceGoal	map elemental abundances on the surface of asteroid Bennu ⓘ
scienceObjective	constrain surface composition of asteroid Bennu ⓘ measure X-ray fluorescence from Bennu’s regolith ⓘ
scienceTeamLeadInstitution	MIT Kavli Institute for Astrophysics and Space Research ⓘ linked to: Kavli Institute for Astrophysics and Space Research
spacecraft	OSIRIS-REx ⓘ linked to: OSIRIS-REx asteroid sample return mission
studentTeamInstitution	Harvard College Observatory ⓘ Massachusetts Institute of Technology ⓘ
targetBody	101955 Bennu ⓘ linked to: asteroid Bennu asteroid Bennu ⓘ
technique	X-ray fluorescence spectroscopy ⓘ
usesDetectorType	CCD ⓘ
wavelengthRange	X-ray ⓘ