Station Explorer for X-ray Timing and Navigation Technology
E383846
NASA mission
X-ray pulsar navigation experiment
spacecraft navigation technology demonstration
technology demonstration mission
Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a NASA demonstration mission that tests the use of X-ray pulsars for autonomous spacecraft navigation in space.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Station Explorer for X-ray Timing and Navigation Technology canonical | 3 |
| NASA X-ray navigation research program | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3729324 — 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: Station Explorer for X-ray Timing and Navigation Technology Context triple: [NICER, SEXTANTFullName, Station Explorer for X-ray Timing and Navigation Technology]
-
A.
IXPE X-ray Polarimetry Explorer
IXPE X-ray Polarimetry Explorer is a NASA space observatory designed to measure the polarization of cosmic X-rays to study extreme astrophysical environments such as black holes, neutron stars, and supernova remnants.
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B.
X-Ray Telescope
The X-Ray Telescope is a space-based instrument designed to detect and image high-energy X-ray emissions from cosmic sources such as black holes, neutron stars, and gamma-ray bursts.
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C.
Chandra’s Surface Thermophysical Experiment
Chandra’s Surface Thermophysical Experiment is a scientific instrument on India’s Chandrayaan-2 lunar mission designed to study the Moon’s surface temperature and thermal properties.
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D.
Spektr-RG observatory
The Spektr-RG observatory is a Russian-German space telescope mission designed to conduct an all-sky X-ray survey, particularly focused on studying galaxy clusters, black holes, and other high-energy cosmic phenomena.
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E.
Solar X-ray Monitor
The Solar X-ray Monitor is a scientific instrument aboard India’s Chandrayaan-2 lunar orbiter designed to observe and measure solar X-ray emissions for studying the Sun’s activity and its effects on the Moon.
- 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: Station Explorer for X-ray Timing and Navigation Technology Target entity description: Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a NASA demonstration mission that tests the use of X-ray pulsars for autonomous spacecraft navigation in space.
-
A.
IXPE X-ray Polarimetry Explorer
IXPE X-ray Polarimetry Explorer is a NASA space observatory designed to measure the polarization of cosmic X-rays to study extreme astrophysical environments such as black holes, neutron stars, and supernova remnants.
-
B.
X-Ray Telescope
The X-Ray Telescope is a space-based instrument designed to detect and image high-energy X-ray emissions from cosmic sources such as black holes, neutron stars, and gamma-ray bursts.
-
C.
Chandra’s Surface Thermophysical Experiment
Chandra’s Surface Thermophysical Experiment is a scientific instrument on India’s Chandrayaan-2 lunar mission designed to study the Moon’s surface temperature and thermal properties.
-
D.
Spektr-RG observatory
The Spektr-RG observatory is a Russian-German space telescope mission designed to conduct an all-sky X-ray survey, particularly focused on studying galaxy clusters, black holes, and other high-energy cosmic phenomena.
-
E.
Solar X-ray Monitor
The Solar X-ray Monitor is a scientific instrument aboard India’s Chandrayaan-2 lunar orbiter designed to observe and measure solar X-ray emissions for studying the Sun’s activity and its effects on the Moon.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
NASA mission
ⓘ
X-ray pulsar navigation experiment ⓘ spacecraft navigation technology demonstration ⓘ technology demonstration mission ⓘ |
| abbreviation | SEXTANT ⓘ |
| aim |
to demonstrate autonomous spacecraft navigation using X-ray pulsars
ⓘ
to test X-ray pulsar timing for navigation in space ⓘ |
| application |
autonomous navigation for spacecraft beyond Earth orbit
ⓘ
future deep-space missions ⓘ |
| benefit |
potential for deep-space autonomous navigation
ⓘ
reduced need for ground-based tracking networks ⓘ |
| collaboration |
International Space Station program
ⓘ
surface form:
International Space Station Program
Goddard Space Flight Center ⓘ
surface form:
NASA Goddard Space Flight Center
|
| country |
United States of America
ⓘ
surface form:
United States
|
| dataSource | X-ray emissions from rotation-powered pulsars ⓘ |
| domain |
astrophysics
ⓘ
space technology ⓘ spacecraft navigation ⓘ |
| hostedOn | exterior of the International Space Station ⓘ |
| isPartOf |
NICER Neutron star Interior Composition Explorer
ⓘ
surface form:
NICER mission
|
| location | Earth orbit ⓘ |
| measurementType | high-precision X-ray photon timing ⓘ |
| missionType | on-orbit technology demonstration ⓘ |
| navigationFrame | pulsar-based reference frame ⓘ |
| navigationMethod |
time-of-arrival measurements of X-ray photons from pulsars
ⓘ
triangulation using multiple X-ray pulsars ⓘ |
| objective |
to determine spacecraft position autonomously
ⓘ
to reduce reliance on ground-based tracking for navigation ⓘ |
| operator | NASA ⓘ |
| platform | International Space Station ⓘ |
| relatedConcept | XNAV ⓘ |
| relatedTo |
NICER Neutron star Interior Composition Explorer
ⓘ
surface form:
Neutron star Interior Composition Explorer
|
| scientificField |
X-ray astronomy
ⓘ
space navigation ⓘ |
| sharesPlatformWith |
NICER Neutron star Interior Composition Explorer
ⓘ
surface form:
Neutron star Interior Composition Explorer
|
| spaceAgency |
Goddard Space Flight Center
ⓘ
surface form:
NASA Goddard Space Flight Center
|
| status | completed demonstration ⓘ |
| targetObject | rotation-powered millisecond pulsars ⓘ |
| technologyType |
X-ray navigation
ⓘ
pulsar navigation ⓘ |
| testedCapability |
autonomous onboard navigation solution
ⓘ
real-time position estimation in space ⓘ |
| testedOn | International Space Station ⓘ |
| uses |
X-ray pulsars
ⓘ
X-ray astronomy ⓘ
surface form:
X-ray timing
pulsar-based navigation ⓘ |
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: Station Explorer for X-ray Timing and Navigation Technology Description of subject: Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a NASA demonstration mission that tests the use of X-ray pulsars for autonomous spacecraft navigation in space.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
NICER Neutron star Interior Composition Explorer
→
SEXTANTFullName
→
Station Explorer for X-ray Timing and Navigation Technology
ⓘ
subject surface form:
NICER