Thalassa
E118792
Thalassa is a small, inner irregularly shaped moon of Neptune that orbits close to the planet within its ring system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Thalassa canonical | 7 |
How this entity was disambiguated
This entity first appeared as the object of triple T1000480 — 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: Thalassa Context triple: [Neptune, moon, Thalassa]
-
A.
Outremer
Outremer was the collective name for the Crusader states established by Western European Christians in the Levant during the Middle Ages.
-
B.
Océan
Océan was a prominent French ship of the line that served as a flagship in major naval engagements during the age of sail.
-
C.
The Sea
The Sea is a painting by British artist L. S. Lowry, known for its minimalist seascape composition and characteristic muted palette.
-
D.
Fidra
Fidra is a small uninhabited island off the coast of East Lothian, Scotland, known for its lighthouse, seabird colonies, and as an inspiration for Robert Louis Stevenson.
-
E.
Terevaka
Terevaka is a large extinct volcanic peak that forms the highest and youngest of the three main volcanoes making up Easter Island.
- 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: Thalassa Target entity description: Thalassa is a small, inner irregularly shaped moon of Neptune that orbits close to the planet within its ring system.
-
A.
Outremer
Outremer was the collective name for the Crusader states established by Western European Christians in the Levant during the Middle Ages.
-
B.
Océan
Océan was a prominent French ship of the line that served as a flagship in major naval engagements during the age of sail.
-
C.
The Sea
The Sea is a painting by British artist L. S. Lowry, known for its minimalist seascape composition and characteristic muted palette.
-
D.
Fidra
Fidra is a small uninhabited island off the coast of East Lothian, Scotland, known for its lighthouse, seabird colonies, and as an inspiration for Robert Louis Stevenson.
-
E.
Terevaka
Terevaka is a large extinct volcanic peak that forms the highest and youngest of the three main volcanoes making up Easter Island.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
irregularly shaped moon
ⓘ
moon of Neptune ⓘ natural satellite ⓘ |
| adjectiveForm | Thalassan ⓘ |
| albedo | low ⓘ |
| belongsToGroup | inner moons of Neptune ⓘ |
| celestialBodyType | inner moon ⓘ |
| diameter_km | ~80 ⓘ |
| discoveredBy |
Richard J. Terrile
ⓘ
Voyager 2 imaging team ⓘ
linked to:
Voyager imaging team
|
| discoveredBySpacecraft | Voyager 2 ⓘ |
| discoveryContext |
Voyager 2 Neptune flyby
ⓘ
linked to:
Voyager 2
|
| discoveryDate | 1989-09-18 ⓘ |
| discoveryMethod | spacecraft imaging ⓘ |
| equilibriumState | non-spherical ⓘ |
| escapeVelocity_m_per_s | ~40 ⓘ |
| exploredBy | Voyager 2 ⓘ |
| gravitationalBinding | bound to Neptune ⓘ |
| IAUNameStatus | approved ⓘ |
| locatedIn |
Neptunian system
ⓘ
linked to:
Neptune system
|
| mass_estimate | very low (exact value uncertain) ⓘ |
| meanDensity_g_per_cm3 | ~1.2 (approximate) ⓘ |
| meanRadius_km | ~40 ⓘ |
| namedAfter |
Greek mythological figure
ⓘ
Thalassa (sea nymph in Greek mythology) ⓘ
linked to:
Thalassa
|
| namedBy | International Astronomical Union ⓘ |
| neighboringMoon |
Despina
ⓘ
Naiad ⓘ |
| orbitalDirection | prograde ⓘ |
| orbitalEccentricity | ~0.0002 ⓘ |
| orbitalInclination_deg | ~0.21 ⓘ |
| orbitalPeriod_days | ~0.311 ⓘ |
| orbits | Neptune ⓘ |
| orbitsWithin | Neptune ring system ⓘ |
| parentPlanet | Neptune ⓘ |
| provisionalDesignation | S/1989 N5 ⓘ |
| relativePosition |
orbits inside Despina
ⓘ
orbits outside Naiad ⓘ |
| ringAssociation | orbits near the inner Neptunian rings ⓘ |
| rotation | synchronous with Neptune ⓘ |
| rotationState | tidally locked to Neptune ⓘ |
| semiMajorAxis_km | ~50,074 ⓘ |
| shape | irregular ⓘ |
| surfaceComposition | likely water ice with dark material ⓘ |
| surfaceFeatures | no prominent large craters resolved ⓘ |
| system |
Neptune satellite system
ⓘ
linked to:
Neptune system
|
| visibilityFromEarth | telescopic only ⓘ |
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: Thalassa Description of subject: Thalassa is a small, inner irregularly shaped moon of Neptune that orbits close to the planet within its ring system.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.