Hydrus
E481647
Hydrus is a small, faint constellation in the southern sky, often referred to as the "lesser water snake."
All labels observed (1)
| Label | Occurrences |
|---|---|
| Hydrus canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T4943483 — 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: Hydrus Context triple: [Dorado, borderedBy, Hydrus]
-
A.
Carybé
Carybé was a prominent Argentine-Brazilian painter, illustrator, and muralist known for his vivid depictions of Afro-Brazilian culture and the city of Salvador, Bahia.
-
B.
Cirra
Cirra is an ancient Greek coastal town historically associated with the region around Crisa and the sanctuary of Delphi.
-
C.
Aganippe
Aganippe is a mythological spring in ancient Greek tradition associated with the Muses and poetic inspiration.
-
D.
Cadmea
Cadmea was the ancient fortified citadel at the heart of Thebes in Boeotia, serving as its political and military stronghold.
-
E.
Potamos
Potamos is a small traditional village on the Greek island of Amorgos, known for its whitewashed Cycladic houses and hillside views over the Aegean Sea.
- 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: Hydrus Target entity description: Hydrus is a small, faint constellation in the southern sky, often referred to as the "lesser water snake."
-
A.
Carybé
Carybé was a prominent Argentine-Brazilian painter, illustrator, and muralist known for his vivid depictions of Afro-Brazilian culture and the city of Salvador, Bahia.
-
B.
Cirra
Cirra is an ancient Greek coastal town historically associated with the region around Crisa and the sanctuary of Delphi.
-
C.
Aganippe
Aganippe is a mythological spring in ancient Greek tradition associated with the Muses and poetic inspiration.
-
D.
Cadmea
Cadmea was the ancient fortified citadel at the heart of Thebes in Boeotia, serving as its political and military stronghold.
-
E.
Potamos
Potamos is a small traditional village on the Greek island of Amorgos, known for its whitewashed Cycladic houses and hillside views over the Aegean Sea.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astronomicalObject
ⓘ
constellation ⓘ |
| areaSquareDegrees | 243 ⓘ |
| associatedWith | southern circumpolar region ⓘ |
| belongsTo | Bayer constellations ⓘ |
| borderingConstellation |
Eridanus
NERFINISHED
ⓘ
Horologium NERFINISHED ⓘ Octans NERFINISHED ⓘ Phoenix NERFINISHED ⓘ Reticulum NERFINISHED ⓘ Tucana NERFINISHED ⓘ |
| brightestStar | Beta Hydri NERFINISHED ⓘ |
| brightestStarApparentMagnitude | 2.8 ⓘ |
| containsDeepSkyObject |
NGC 1466
NERFINISHED
ⓘ
NGC 1473 NERFINISHED ⓘ NGC 1511 NERFINISHED ⓘ NGC 1515 NERFINISHED ⓘ |
| containsExoplanetHostStar |
GJ 3021
NERFINISHED
ⓘ
HD 10180 NERFINISHED ⓘ |
| containsSouthCelestialPole | false ⓘ |
| declinationRange | −57° to −82° (approximate) ⓘ |
| etymology | Latin for water snake ⓘ |
| firstPublishedIn | Plancius celestial globe (1597–1598) NERFINISHED ⓘ |
| hasDefiniteArticle | false ⓘ |
| hasGenitiveForm | Hydri ⓘ |
| hasIAUAbbreviation | Hyi NERFINISHED ⓘ |
| hasThreeLetterAbbreviation | Hyi NERFINISHED ⓘ |
| includedIn | Johann Bayer Uranometria (1603) NERFINISHED ⓘ |
| introducedBy | Petrus Plancius NERFINISHED ⓘ |
| introductionYear | 1597 ⓘ |
| isCircumpolarFrom | much of southern hemisphere ⓘ |
| isDistinctFrom |
Hydra
NERFINISHED
ⓘ
Hydrus (mythology) NERFINISHED ⓘ |
| isFaint | true ⓘ |
| isSmall | true ⓘ |
| liesInMilkyWayRegion | false ⓘ |
| liesNear | south celestial pole ⓘ |
| name | Hydrus NERFINISHED ⓘ |
| notableStar |
Alpha Hydri
NERFINISHED
ⓘ
Gamma Hydri NERFINISHED ⓘ |
| otherName |
Lesser Water Snake
NERFINISHED
ⓘ
the lesser water snake NERFINISHED ⓘ |
| quadrant | SQ1 ⓘ |
| rankByArea | 61 ⓘ |
| rightAscensionRange | 0h 18m to 4h 35m (approximate) ⓘ |
| skyHemisphere | southern ⓘ |
| standardizedBy | International Astronomical Union NERFINISHED ⓘ |
| visibleBestIn | November ⓘ |
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: Hydrus Description of subject: Hydrus is a small, faint constellation in the southern sky, often referred to as the "lesser water snake."
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Tucana
subject surface form:
Dorado