SEXTANT
E383845
SEXTANT is a NASA demonstration mission that tests using X-ray emissions from pulsars for autonomous spacecraft navigation in deep space.
All labels observed (1)
| Label | Occurrences |
|---|---|
| SEXTANT canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T3729323 — 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: SEXTANT Context triple: [NICER, supportsExperiment, SEXTANT]
-
A.
Seabreeze
Seabreeze was a former neighboring city to Daytona Beach, Florida, that was eventually incorporated into the larger Daytona Beach municipality.
-
B.
Neptune Spear
Neptune Spear is the code name for the 2011 U.S. Navy SEAL operation that located and killed al-Qaeda leader Osama bin Laden in Pakistan.
-
C.
Halfmoon
Halfmoon is a suburban town in eastern New York State known for its residential communities and proximity to the Capital District.
-
D.
The Jetty
The Jetty is a segment of Chicago’s Riverwalk featuring floating gardens, fishing stations, and educational elements that bring visitors closer to the ecology of the Chicago River.
-
E.
Crescent
Crescent is a long-distance Amtrak passenger train that runs between New York City and New Orleans, serving major cities along the U.S. East Coast and Deep South.
- 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: SEXTANT Target entity description: SEXTANT is a NASA demonstration mission that tests using X-ray emissions from pulsars for autonomous spacecraft navigation in deep space.
-
A.
Seabreeze
Seabreeze was a former neighboring city to Daytona Beach, Florida, that was eventually incorporated into the larger Daytona Beach municipality.
-
B.
Neptune Spear
Neptune Spear is the code name for the 2011 U.S. Navy SEAL operation that located and killed al-Qaeda leader Osama bin Laden in Pakistan.
-
C.
Halfmoon
Halfmoon is a suburban town in eastern New York State known for its residential communities and proximity to the Capital District.
-
D.
The Jetty
The Jetty is a segment of Chicago’s Riverwalk featuring floating gardens, fishing stations, and educational elements that bring visitors closer to the ecology of the Chicago River.
-
E.
Crescent
Crescent is a long-distance Amtrak passenger train that runs between New York City and New Orleans, serving major cities along the U.S. East Coast and Deep South.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
NASA technology demonstration mission
ⓘ
spacecraft navigation experiment ⓘ |
| acronym | SEXTANT ⓘ |
| aimsTo |
demonstrate autonomous spacecraft navigation in deep space
ⓘ
determine spacecraft position using pulsar signals ⓘ |
| application |
crewed exploration missions
ⓘ
deep-space missions ⓘ planetary missions ⓘ |
| coLocatedWith | Neutron star Interior Composition Explorer ⓘ |
| countryOfOperator |
United States
ⓘ
linked to:
United States of America
|
| dataType |
X-ray photon arrival times
ⓘ
pulsar timing profiles ⓘ |
| demonstrates |
X-ray pulsar-based navigation (XNAV)
ⓘ
onboard autonomous navigation without GPS ⓘ |
| environment | low Earth orbit ⓘ |
| field |
astrophysics
ⓘ
spacecraft guidance, navigation, and control ⓘ |
| fullName | Station Explorer for X-ray Timing and Navigation Technology ⓘ |
| fundedBy | NASA Space Technology Mission Directorate ⓘ |
| hostedOn | NICER ⓘ |
| missionType |
X-ray pulsar navigation experiment
ⓘ
navigation technology demonstration ⓘ |
| mountedOn | International Space Station ⓘ |
| navigationOutput |
spacecraft position
ⓘ
spacecraft time synchronization ⓘ spacecraft velocity ⓘ |
| operatedBy |
NASA Goddard Space Flight Center
ⓘ
linked to:
Goddard Space Flight Center
|
| operator | NASA ⓘ |
| orbitsWith | International Space Station ⓘ |
| partOf | NASA X-ray navigation research program ⓘ |
| relatedConcept |
GPS-independent navigation
ⓘ
celestial navigation ⓘ timing-based navigation ⓘ |
| sharesHardwareWith | NICER X-ray timing instrument ⓘ |
| spaceAgency | NASA ⓘ |
| spacecraftPlatform | International Space Station ⓘ |
| status | completed technology demonstration ⓘ |
| technologyDomain |
X-ray astronomy
ⓘ
autonomous navigation ⓘ |
| tests |
feasibility of deep-space X-ray navigation
ⓘ
navigation algorithms using pulsar timing ⓘ |
| uses |
X-ray emissions from pulsars
ⓘ
X-ray timing ⓘ pulsar-based navigation ⓘ |
| usesDetectorType | X-ray detectors ⓘ |
| usesReferenceObjects |
millisecond pulsars
ⓘ
rotation-powered pulsars ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: SEXTANT Description of subject: SEXTANT is a NASA demonstration mission that tests using X-ray emissions from pulsars for autonomous spacecraft navigation in deep space.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
NICER Neutron star Interior Composition Explorer