Ulugh Beg observatory
E313236
The Ulugh Beg Observatory was a 15th-century astronomical center in Samarkand, founded by the Timurid ruler and scholar Ulugh Beg, renowned for its advanced instruments and highly accurate star catalogues that significantly influenced Islamic and global astronomy.
All labels observed (8)
| Label | Occurrences |
|---|---|
| Samarkand observatory | 5 |
| Ulugh Beg Observatory | 4 |
| Samarkand astronomers | 1 |
| Samarkand astronomical school | 1 |
| Samarkand school of astronomy | 1 |
| Samarqand observatory | 1 |
| Ulugh Beg Observatory Museum | 1 |
| Ulugh Beg observatory canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2931309 — 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: Ulugh Beg observatory Context triple: [Islamic astronomy, hasKeyInstitution, Ulugh Beg observatory]
-
A.
Maragha observatory
The Maragha observatory was a major 13th-century astronomical center in Persia, renowned for its advanced instruments and influential contributions to Islamic and global astronomy.
-
B.
Amir Chakhmaq Complex
The Amir Chakhmaq Complex is a prominent historic square and architectural ensemble in Yazd, Iran, renowned for its striking multi-story façade, mosque, and public gathering spaces.
-
C.
Samanid Mausoleum
The Samanid Mausoleum is a 10th-century brick funerary monument in Bukhara, Uzbekistan, celebrated as one of the finest and earliest examples of Islamic architecture in Central Asia.
-
D.
Quba Mosque
Quba Mosque is an important early Islamic mosque in Medina, Saudi Arabia, revered as the first mosque built by the Prophet Muhammad.
-
E.
Teide Observatory
Teide Observatory is a major astronomical research facility on Tenerife in Spain’s Canary Islands, renowned for its clear skies and extensive array of solar and nighttime telescopes.
- 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: Ulugh Beg observatory Target entity description: The Ulugh Beg Observatory was a 15th-century astronomical center in Samarkand, founded by the Timurid ruler and scholar Ulugh Beg, renowned for its advanced instruments and highly accurate star catalogues that significantly influenced Islamic and global astronomy.
-
A.
Maragha observatory
The Maragha observatory was a major 13th-century astronomical center in Persia, renowned for its advanced instruments and influential contributions to Islamic and global astronomy.
-
B.
Amir Chakhmaq Complex
The Amir Chakhmaq Complex is a prominent historic square and architectural ensemble in Yazd, Iran, renowned for its striking multi-story façade, mosque, and public gathering spaces.
-
C.
Samanid Mausoleum
The Samanid Mausoleum is a 10th-century brick funerary monument in Bukhara, Uzbekistan, celebrated as one of the finest and earliest examples of Islamic architecture in Central Asia.
-
D.
Quba Mosque
Quba Mosque is an important early Islamic mosque in Medina, Saudi Arabia, revered as the first mosque built by the Prophet Muhammad.
-
E.
Teide Observatory
Teide Observatory is a major astronomical research facility on Tenerife in Spain’s Canary Islands, renowned for its clear skies and extensive array of solar and nighttime telescopes.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical observatory
ⓘ
cultural heritage site ⓘ |
| archaeologicalExcavationStart | 1908 ⓘ |
| architecturalStyle | Timurid architecture ⓘ |
| completionDate | circa 1429 ⓘ |
| constructionStart | circa 1420 ⓘ |
| continent | Asia ⓘ |
| coordinateLocation | 39.674°N 66.975°E ⓘ |
| country | Uzbekistan ⓘ |
| culture | Islamic Golden Age (late phase) ⓘ |
| currentUse | archaeological site ⓘ |
| diameter | about 46 meters ⓘ |
| discoveredByArchaeology | Vladimir Vyatkin ⓘ |
| dissolvedOrAbolished | circa 1449 ⓘ |
| era | 15th century ⓘ |
| fieldOfWork |
astrometry
ⓘ
astronomy ⓘ mathematics ⓘ |
| founder | Ulugh Beg ⓘ |
| hasMuseum |
Ulugh Beg Observatory Museum
ⓘ
linked to:
Ulugh Beg observatory
|
| hasPart |
cylindrical building
ⓘ
giant sextant ⓘ meridian arc ⓘ underground observation trench ⓘ |
| height | about 30 meters (original structure) ⓘ |
| heritageDesignation | UNESCO World Heritage Site component ⓘ |
| inception | 1420 ⓘ |
| influenced |
European Renaissance astronomy
ⓘ
Islamic astronomy ⓘ |
| instrumentType |
armillary sphere
ⓘ
quadrant ⓘ sextant ⓘ |
| knownFor |
accurate determination of the obliquity of the ecliptic
ⓘ
high-precision measurement of the solar year ⓘ one of the most accurate pre-telescopic star catalogues ⓘ |
| locatedIn |
Samarkand
ⓘ
Timurid Empire ⓘ
linked to:
Timurid dynasty
|
| mainBuildingMaterial | brick ⓘ |
| namedAfter | Ulugh Beg ⓘ |
| notableWork |
Zij-i Sultani star catalogue
ⓘ
linked to:
Zīj-i Sultānī
|
| numberOfStarsCatalogued | about 1018 ⓘ |
| operator |
Ali Qushji
ⓘ
linked to:
Al-Qushji
Ghiyath al-Din Jamshid al-Kashi ⓘ
linked to:
Jamshid al-Kashi
Qadi Zada al-Rumi ⓘ Ulugh Beg ⓘ |
| partOf |
Samarkand cultural ensemble
ⓘ
linked to:
Samarkand
|
| significantEvent | destruction in the mid-15th century ⓘ |
| touristAttraction | yes ⓘ |
| UNESCOInscriptionYear | 2001 ⓘ |
| UNESCOWorldHeritageSite |
Samarkand – Crossroad of Cultures
ⓘ
linked to:
Samarkand
|
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: Ulugh Beg observatory Description of subject: The Ulugh Beg Observatory was a 15th-century astronomical center in Samarkand, founded by the Timurid ruler and scholar Ulugh Beg, renowned for its advanced instruments and highly accurate star catalogues that significantly influenced Islamic and global astronomy.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Ulugh Beg observatory
linked to: Ulugh Beg observatory
linked to: Ulugh Beg observatory
linked to: Ulugh Beg observatory
subject linked to:
Ulugh Beg observatory
linked to: Ulugh Beg observatory
linked to: Ulugh Beg observatory
linked to: Ulugh Beg observatory
linked to: Ulugh Beg observatory
linked to: Ulugh Beg observatory
linked to: Ulugh Beg observatory
linked to: Ulugh Beg observatory