Zij-i Ilkhani
E516305
Zij-i Ilkhani is a 13th-century astronomical handbook and star catalogue compiled by Nasir al-Din al-Tusi at the Maragha observatory, influential in the development of Islamic and later European astronomy.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Zij-i Ilkhani canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5372304 — 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: Zij-i Ilkhani Context triple: [Nasir al-Din al-Tusi, notableWork, Zij-i Ilkhani]
-
A.
Qutlugh Nigar Khanum
Qutlugh Nigar Khanum was a Timurid princess and consort who became historically notable as the mother of Babur, the founder of the Mughal Empire.
-
B.
Töregene Khatun
Töregene Khatun was a powerful Mongol empress who served as regent of the Mongol Empire after Ögedei Khan’s death, playing a key role in imperial politics and succession.
-
C.
Tajlu Khanum
Tajlu Khanum was a prominent Safavid royal consort and queen mother, best known as the influential mother of Shah Tahmasp I of Iran.
-
D.
Khoshiar Hanim
Khoshiar Hanim was an influential 19th-century Egyptian royal consort and mother of Khedive Isma'il Pasha, noted for her patronage of major architectural projects in Cairo.
-
E.
Shah Khanum
Shah Khanum was the grandmother of Siraj ud-Daulah, the last independent Nawab of Bengal in the mid-18th century.
- 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: Zij-i Ilkhani Target entity description: Zij-i Ilkhani is a 13th-century astronomical handbook and star catalogue compiled by Nasir al-Din al-Tusi at the Maragha observatory, influential in the development of Islamic and later European astronomy.
-
A.
Qutlugh Nigar Khanum
Qutlugh Nigar Khanum was a Timurid princess and consort who became historically notable as the mother of Babur, the founder of the Mughal Empire.
-
B.
Töregene Khatun
Töregene Khatun was a powerful Mongol empress who served as regent of the Mongol Empire after Ögedei Khan’s death, playing a key role in imperial politics and succession.
-
C.
Tajlu Khanum
Tajlu Khanum was a prominent Safavid royal consort and queen mother, best known as the influential mother of Shah Tahmasp I of Iran.
-
D.
Khoshiar Hanim
Khoshiar Hanim was an influential 19th-century Egyptian royal consort and mother of Khedive Isma'il Pasha, noted for her patronage of major architectural projects in Cairo.
-
E.
Shah Khanum
Shah Khanum was the grandmother of Siraj ud-Daulah, the last independent Nawab of Bengal in the mid-18th century.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical handbook
ⓘ
star catalogue ⓘ zīj ⓘ |
| approximateYearOfCompletion | c. 1272 ⓘ |
| associatedWith | Maragha observatory NERFINISHED ⓘ |
| author | Nasir al-Din al-Tusi NERFINISHED ⓘ |
| basedOn | Ptolemaic astronomy NERFINISHED ⓘ |
| compiler | Nasir al-Din al-Tusi NERFINISHED ⓘ |
| contains |
eclipse tables
ⓘ
instructions for astronomical instruments ⓘ lunar tables ⓘ planetary tables ⓘ solar tables ⓘ star catalogue ⓘ tables of fixed stars ⓘ trigonometric tables ⓘ |
| culturalContext | Islamic Golden Age (late phase) NERFINISHED ⓘ |
| dateOfCompilation | 13th century ⓘ |
| discipline | mathematical astronomy ⓘ |
| era | medieval period ⓘ |
| field | astronomy ⓘ |
| geographicalLongitudeReference | Maragha NERFINISHED ⓘ |
| hasAlternativeName | Ilkhanid Tables NERFINISHED ⓘ |
| hasAlternativeTransliteration | Zij-i Ilkhani NERFINISHED ⓘ |
| hasGenre | scientific treatise ⓘ |
| historicalRegion | Persia NERFINISHED ⓘ |
| improvedUpon | Ptolemaic parameters ⓘ |
| includes |
mean motions of planets
ⓘ
parameters for planetary motions ⓘ tables of chords ⓘ tables of sines ⓘ |
| influenced |
European astronomy
ⓘ
Islamic astronomy ⓘ later zījes ⓘ |
| language |
Arabic
ⓘ
Persian ⓘ |
| namedAfter | Ilkhanid rulers NERFINISHED ⓘ |
| partOf | Islamic astronomical tradition ⓘ |
| placeOfCompilation | Maragha observatory NERFINISHED ⓘ |
| sponsoredBy | Ilkhanid dynasty NERFINISHED ⓘ |
| usedBy |
Renaissance astronomers
ⓘ
later Islamic astronomers ⓘ |
| usedCoordinateSystem |
ecliptic coordinates
ⓘ
equatorial coordinates ⓘ |
| usedFor |
astrological predictions
ⓘ
astronomical calculations ⓘ calendar computations ⓘ |
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: Zij-i Ilkhani Description of subject: Zij-i Ilkhani is a 13th-century astronomical handbook and star catalogue compiled by Nasir al-Din al-Tusi at the Maragha observatory, influential in the development of Islamic and later European astronomy.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.