Pluto Energetic Particle Spectrometer Science Investigation
E532529
Pluto Energetic Particle Spectrometer Science Investigation is an instrument aboard NASA’s New Horizons spacecraft designed to measure and analyze high-energy particles in the space environment around Pluto and beyond.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pluto Energetic Particle Spectrometer Science Investigation canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5561393 — 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: Pluto Energetic Particle Spectrometer Science Investigation Context triple: [PEPSSI, fullName, Pluto Energetic Particle Spectrometer Science Investigation]
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A.
Energetic Particle and Plasma Spectrometer
The Energetic Particle and Plasma Spectrometer is a scientific instrument designed to measure high-energy particles and plasma environments in space, notably used aboard NASA’s MESSENGER mission to study Mercury’s magnetosphere and solar wind interactions.
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B.
Pluto’s satellite system
Pluto’s satellite system is the collection of natural moons orbiting the dwarf planet Pluto, dominated by the large moon Charon and accompanied by the smaller satellites Styx, Nix, Kerberos, and Hydra.
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C.
Plasma Wave Subsystem
The Plasma Wave Subsystem was a scientific instrument on NASA’s Galileo spacecraft designed to measure plasma waves and radio emissions in Jupiter’s magnetosphere and surrounding space environment.
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D.
Mars Exospheric Neutral Composition Analyser
The Mars Exospheric Neutral Composition Analyser is a scientific instrument designed to study the composition and structure of Mars’ upper atmosphere and exosphere.
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E.
Jovian Energetic Particle Detector Instrument (JEDI)
The Jovian Energetic Particle Detector Instrument (JEDI) is a scientific payload on NASA’s Juno spacecraft designed to measure high-energy charged particles in Jupiter’s magnetosphere to study the planet’s radiation environment and space weather processes.
- 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: Pluto Energetic Particle Spectrometer Science Investigation Target entity description: Pluto Energetic Particle Spectrometer Science Investigation is an instrument aboard NASA’s New Horizons spacecraft designed to measure and analyze high-energy particles in the space environment around Pluto and beyond.
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A.
Energetic Particle and Plasma Spectrometer
The Energetic Particle and Plasma Spectrometer is a scientific instrument designed to measure high-energy particles and plasma environments in space, notably used aboard NASA’s MESSENGER mission to study Mercury’s magnetosphere and solar wind interactions.
-
B.
Pluto’s satellite system
Pluto’s satellite system is the collection of natural moons orbiting the dwarf planet Pluto, dominated by the large moon Charon and accompanied by the smaller satellites Styx, Nix, Kerberos, and Hydra.
-
C.
Plasma Wave Subsystem
The Plasma Wave Subsystem was a scientific instrument on NASA’s Galileo spacecraft designed to measure plasma waves and radio emissions in Jupiter’s magnetosphere and surrounding space environment.
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D.
Mars Exospheric Neutral Composition Analyser
The Mars Exospheric Neutral Composition Analyser is a scientific instrument designed to study the composition and structure of Mars’ upper atmosphere and exosphere.
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E.
Jovian Energetic Particle Detector Instrument (JEDI)
The Jovian Energetic Particle Detector Instrument (JEDI) is a scientific payload on NASA’s Juno spacecraft designed to measure high-energy charged particles in Jupiter’s magnetosphere to study the planet’s radiation environment and space weather processes.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
particle spectrometer
ⓘ
scientific experiment ⓘ spacecraft instrument ⓘ |
| abbreviation | PEPSSI NERFINISHED ⓘ |
| contributesTo |
heliospheric science
ⓘ
planetary atmosphere escape studies ⓘ space plasma physics ⓘ |
| dataProduct |
energetic particle flux measurements
ⓘ
particle energy spectra ⓘ pitch-angle distributions ⓘ |
| energyRange | approximately 1 keV to 1 MeV ⓘ |
| environmentStudied |
Pluto magnetospheric environment
ⓘ
solar wind at Pluto ⓘ space environment beyond Pluto ⓘ |
| fieldOfView | narrow field of view ⓘ |
| flybyDate | 2015-07-14 ⓘ |
| fundingAgency | NASA NERFINISHED ⓘ |
| hostBody |
Kuiper Belt objects
NERFINISHED
ⓘ
Pluto NERFINISHED ⓘ |
| launchDate | 2006-01-19 ⓘ |
| launchSite | Cape Canaveral Air Force Station NERFINISHED ⓘ |
| launchVehicle | Atlas V 551 NERFINISHED ⓘ |
| locationOnSpacecraft | New Horizons instrument deck ⓘ |
| measures |
angular distribution of energetic particles
ⓘ
energetic electrons ⓘ energetic ions ⓘ energy spectra of charged particles ⓘ |
| mission | New Horizons mission to Pluto and the Kuiper Belt NERFINISHED ⓘ |
| missionPhase |
Kuiper Belt extended mission phase
ⓘ
Pluto encounter phase ⓘ |
| onSpacecraft | New Horizons NERFINISHED ⓘ |
| operationalRegion |
Kuiper Belt region
NERFINISHED
ⓘ
Pluto vicinity ⓘ outer heliosphere ⓘ |
| operator | NASA ⓘ |
| partOf | New Horizons payload ⓘ |
| primaryTarget | Pluto system NERFINISHED ⓘ |
| program | New Frontiers program NERFINISHED ⓘ |
| scientificObjective |
characterize energetic particle populations in the outer heliosphere
ⓘ
investigate escape of atmospheric particles from Pluto ⓘ measure energetic charged particles in the Pluto environment ⓘ study interaction of the solar wind with Pluto’s atmosphere ⓘ |
| secondaryTarget | Kuiper Belt NERFINISHED ⓘ |
| spaceAgency | NASA ⓘ |
| spacecraftType | interplanetary probe ⓘ |
| status | operational ⓘ |
| usesDetectorType |
solid-state detector
ⓘ
time-of-flight detector ⓘ |
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: Pluto Energetic Particle Spectrometer Science Investigation Description of subject: Pluto Energetic Particle Spectrometer Science Investigation is an instrument aboard NASA’s New Horizons spacecraft designed to measure and analyze high-energy particles in the space environment around Pluto and beyond.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.