Hipparchus
E112015
Hipparchus was an ancient Greek astronomer and mathematician renowned for founding trigonometry and creating one of the first comprehensive models of the motions of the Sun and Moon.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Hipparchus canonical | 6 |
| Hipparchus of Nicaea | 2 |
| works of Hipparchus | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T929290 — 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.
Target entity: Hipparchus Context triple: [Ptolemaic system, influencedBy, Hipparchus]
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A.
Hipparchus of Athens
Hipparchus of Athens was a 6th-century BCE Athenian tyrant of the Peisistratid family, known as a patron of the arts and for his assassination, which became a celebrated event in Athenian democratic lore.
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B.
Claudius Ptolemaeus
Claudius Ptolemaeus, commonly known as Ptolemy, was a Greco-Roman mathematician, astronomer, and geographer whose geocentric model of the universe and influential works like the Almagest shaped scientific thought for over a millennium.
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C.
Posidonius of Apamea
Posidonius of Apamea was a prominent Hellenistic philosopher, polymath, and influential later Stoic thinker whose work bridged Stoicism with contemporary science, history, and geography.
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D.
Hipparchicus
Hipparchicus is an ancient Greek treatise by Xenophon that provides practical guidance on the duties and conduct of a cavalry commander.
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E.
Meton of Athens
Meton of Athens was a 5th-century BCE Greek astronomer and mathematician known for introducing the 19-year Metonic cycle that linked lunar and solar calendars.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Hipparchus Target entity description: Hipparchus was an ancient Greek astronomer and mathematician renowned for founding trigonometry and creating one of the first comprehensive models of the motions of the Sun and Moon.
-
A.
Hipparchus of Athens
Hipparchus of Athens was a 6th-century BCE Athenian tyrant of the Peisistratid family, known as a patron of the arts and for his assassination, which became a celebrated event in Athenian democratic lore.
-
B.
Claudius Ptolemaeus
Claudius Ptolemaeus, commonly known as Ptolemy, was a Greco-Roman mathematician, astronomer, and geographer whose geocentric model of the universe and influential works like the Almagest shaped scientific thought for over a millennium.
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C.
Posidonius of Apamea
Posidonius of Apamea was a prominent Hellenistic philosopher, polymath, and influential later Stoic thinker whose work bridged Stoicism with contemporary science, history, and geography.
-
D.
Hipparchicus
Hipparchicus is an ancient Greek treatise by Xenophon that provides practical guidance on the duties and conduct of a cavalry commander.
-
E.
Meton of Athens
Meton of Athens was a 5th-century BCE Greek astronomer and mathematician known for introducing the 19-year Metonic cycle that linked lunar and solar calendars.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
ancient Greek astronomer
ⓘ
astrologer ⓘ geographer ⓘ human ⓘ mathematician ⓘ |
| approximateValue |
anomalistic month
ⓘ
draconic month ⓘ length of the tropical year ⓘ lunar distance ⓘ synodic month ⓘ |
| associatedWith |
Nicaea
ⓘ
Rhodes ⓘ |
| birthDate | circa 190 BC ⓘ |
| birthPlace |
Greek Antiquity
ⓘ
surface form:
Ancient Greece
Bithynia ⓘ Nicaea ⓘ |
| deathDate | circa 120 BC ⓘ |
| deathPlace | Rhodes ⓘ |
| era | Hellenistic period ⓘ |
| field |
astronomy
ⓘ
geography ⓘ mathematics ⓘ trigonometry ⓘ |
| influenced |
Claudius Ptolemaeus
ⓘ
surface form:
Ptolemy
ancient Greek astronomy ⓘ development of trigonometry ⓘ |
| knownFor |
creating a star catalog
ⓘ
developing models of the motions of the Sun and Moon ⓘ discovering precession of the equinoxes ⓘ early use of chords in a circle ⓘ founding trigonometry ⓘ improving the accuracy of astronomical observations ⓘ introduction of epicyclic and eccentric models ⓘ systematic use of trigonometric tables ⓘ use of Babylonian astronomical data ⓘ |
| legacy |
considered one of the greatest ancient astronomers
ⓘ
laid foundations for Ptolemaic astronomy ⓘ |
| name |
Hipparchus
self-linksurface differs
ⓘ
surface form:
Hipparchus of Nicaea
|
| notableMethod |
comparison of his observations with earlier star catalogs
ⓘ
geometrical models with epicycles and eccentrics ⓘ use of a chord table for trigonometric calculations ⓘ |
| usedSource |
Babylonian chronicles
ⓘ
surface form:
Babylonian astronomical records
|
| workOn |
eclipses
ⓘ
geographical coordinates ⓘ lunar theory ⓘ solar theory ⓘ star positions ⓘ |
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.
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.
Subject: Hipparchus Description of subject: Hipparchus was an ancient Greek astronomer and mathematician renowned for founding trigonometry and creating one of the first comprehensive models of the motions of the Sun and Moon.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.