PEPSSI
E145773
PEPSSI is a particle spectrometer aboard NASA’s New Horizons spacecraft designed to measure energetic ions and electrons in the outer solar system.
All labels observed (2)
| Label | Occurrences |
|---|---|
| PEPSSI canonical | 4 |
| PEPSSI instrument | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1274770 — 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: PEPSSI Context triple: [New Horizons, instrument, PEPSSI]
-
A.
PEPs
PEPs are formal design documents that propose and describe new features, processes, or changes for the Python programming language and its community.
-
B.
PSI
PSI is the acronym commonly used for the Italian Socialist Party, a historic socialist political party in Italy.
-
C.
PPAS
PPAS is a New York City public school specializing in rigorous academic education combined with intensive training in the performing arts for middle and high school students.
-
D.
PEPM
PEPM (Partial Evaluation and Program Manipulation) is an ACM SIGPLAN-sponsored symposium focused on research in program analysis, transformation, and generation techniques.
-
E.
PASP
PASP is the NATO Political Affairs and Security Policy Division, responsible for developing and coordinating the Alliance’s political and security policies.
- 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: PEPSSI Target entity description: PEPSSI is a particle spectrometer aboard NASA’s New Horizons spacecraft designed to measure energetic ions and electrons in the outer solar system.
-
A.
PEPs
PEPs are formal design documents that propose and describe new features, processes, or changes for the Python programming language and its community.
-
B.
PSI
PSI is the acronym commonly used for the Italian Socialist Party, a historic socialist political party in Italy.
-
C.
PPAS
PPAS is a New York City public school specializing in rigorous academic education combined with intensive training in the performing arts for middle and high school students.
-
D.
PEPM
PEPM (Partial Evaluation and Program Manipulation) is an ACM SIGPLAN-sponsored symposium focused on research in program analysis, transformation, and generation techniques.
-
E.
PASP
PASP is the NATO Political Affairs and Security Policy Division, responsible for developing and coordinating the Alliance’s political and security policies.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
energetic particle detector
ⓘ
particle spectrometer ⓘ spacecraft instrument ⓘ |
| aboard | New Horizons ⓘ |
| acronymFor | Pluto Energetic Particle Spectrometer Science Investigation ⓘ |
| canDetermine |
ion mass
ⓘ
particle energy ⓘ particle flux ⓘ |
| contributesTo |
understanding of atmospheric escape at Pluto
ⓘ
understanding of solar wind–planet interactions ⓘ |
| dataUsedFor |
characterizing energetic particle populations in the Kuiper Belt
ⓘ
modeling Pluto’s magnetospheric environment ⓘ |
| designedTo |
measure energetic electrons
ⓘ
measure energetic ions ⓘ |
| developedFor | in situ measurements of energetic particles ⓘ |
| fullName | Pluto Energetic Particle Spectrometer Science Investigation ⓘ |
| hostAgency | NASA Johns Hopkins University Applied Physics Laboratory ⓘ |
| launchedWith | New Horizons on 2006-01-19 ⓘ |
| locatedOn | New Horizons spacecraft payload deck ⓘ |
| measures |
angular distribution of energetic particles
ⓘ
electron count rates ⓘ ion count rates ⓘ particle energy spectra ⓘ |
| mission |
New Horizons mission to Pluto and the Kuiper Belt
ⓘ
linked to:
New Horizons
|
| mountedOn | New Horizons spin-stabilized spacecraft bus ⓘ |
| operatedBy | NASA ⓘ |
| operationalRegion | outer solar system ⓘ |
| partOf | New Horizons science payload ⓘ |
| relatedInstrument |
Alice
ⓘ
LORRI ⓘ REX ⓘ Ralph ⓘ SWAP ⓘ |
| scienceObjective |
characterize energetic particle environment along New Horizons trajectory
ⓘ
investigate loss of Pluto’s atmosphere to space ⓘ study interaction of solar wind with Kuiper Belt objects ⓘ |
| studies |
energetic particle environment in the outer solar system
ⓘ
escape of Pluto’s atmosphere ⓘ solar wind interaction with Pluto ⓘ space weather in the Kuiper Belt ⓘ |
| targetBody |
Charon
ⓘ
Pluto ⓘ |
| targetRegion |
Kuiper Belt
ⓘ
outer heliosphere ⓘ |
| uses |
energy measurement
ⓘ
time-of-flight measurement ⓘ |
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: PEPSSI Description of subject: PEPSSI is a particle spectrometer aboard NASA’s New Horizons spacecraft designed to measure energetic ions and electrons in the outer solar system.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: PEPSSI