Astronomical Observatories of Jai Singh
E304516
The Astronomical Observatories of Jai Singh are a group of early 18th-century masonry observatories in India, built by Maharaja Jai Singh II for precise naked-eye astronomical measurements and now recognized as UNESCO World Heritage sites.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Jantar Mantar observatories | 2 |
| Astronomical Observatories of Jai Singh canonical | 1 |
| Jai Singh II’s observatories | 1 |
| Jai Singh observatories | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2838547 — 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: Astronomical Observatories of Jai Singh Context triple: [Jantar Mantar, Jaipur, partOf, Astronomical Observatories of Jai Singh]
-
A.
Jantar Mantar, Jaipur
Jantar Mantar, Jaipur is an early 18th-century astronomical observatory in Rajasthan, India, renowned for its large masonry instruments used to measure time and track celestial bodies and recognized as a UNESCO World Heritage Site.
-
B.
Jantar Mantar, Mathura
Jantar Mantar, Mathura is an 18th-century astronomical observatory in Uttar Pradesh, India, built by Maharaja Sawai Jai Singh II for precise celestial observations and timekeeping.
-
C.
Jantar Mantar, New Delhi
Jantar Mantar, New Delhi is an 18th-century astronomical observatory built by Maharaja Jai Singh II, featuring large masonry instruments used for precise naked-eye observations of celestial bodies.
-
D.
Jantar Mantar, Varanasi
Jantar Mantar, Varanasi is an 18th-century astronomical observatory in Varanasi, India, featuring masonry instruments built by Maharaja Jai Singh II for precise celestial observations and timekeeping.
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E.
Madras Observatory
Madras Observatory was a historic astronomical observatory in colonial India that played a key role in timekeeping, celestial observations, and the development of regional standard time.
- 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: Astronomical Observatories of Jai Singh Target entity description: The Astronomical Observatories of Jai Singh are a group of early 18th-century masonry observatories in India, built by Maharaja Jai Singh II for precise naked-eye astronomical measurements and now recognized as UNESCO World Heritage sites.
-
A.
Jantar Mantar, Jaipur
Jantar Mantar, Jaipur is an early 18th-century astronomical observatory in Rajasthan, India, renowned for its large masonry instruments used to measure time and track celestial bodies and recognized as a UNESCO World Heritage Site.
-
B.
Jantar Mantar, Mathura
Jantar Mantar, Mathura is an 18th-century astronomical observatory in Uttar Pradesh, India, built by Maharaja Sawai Jai Singh II for precise celestial observations and timekeeping.
-
C.
Jantar Mantar, New Delhi
Jantar Mantar, New Delhi is an 18th-century astronomical observatory built by Maharaja Jai Singh II, featuring large masonry instruments used for precise naked-eye observations of celestial bodies.
-
D.
Jantar Mantar, Varanasi
Jantar Mantar, Varanasi is an 18th-century astronomical observatory in Varanasi, India, featuring masonry instruments built by Maharaja Jai Singh II for precise celestial observations and timekeeping.
-
E.
Madras Observatory
Madras Observatory was a historic astronomical observatory in colonial India that played a key role in timekeeping, celestial observations, and the development of regional standard time.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
UNESCO World Heritage Site
ⓘ
group of astronomical observatories ⓘ |
| architect |
Maharaja Jai Singh II
ⓘ
surface form:
Maharaja Sawai Jai Singh II
|
| architecturalStyle | observatory architecture ⓘ |
| builder |
Maharaja Jai Singh II
ⓘ
surface form:
Maharaja Sawai Jai Singh II
|
| coordinateSystem |
altazimuth system
ⓘ
ecliptic system ⓘ equatorial system ⓘ |
| country | India ⓘ |
| hasInstrumentType |
armillary-type instrument
ⓘ
gnomon ⓘ meridian circle ⓘ quadrant ⓘ sundial ⓘ |
| hasPart |
Jantar Mantar, New Delhi
ⓘ
surface form:
Jantar Mantar, Delhi
Jantar Mantar, Jaipur ⓘ Jantar Mantar, Mathura ⓘ Jantar Mantar, Ujjain ⓘ Jantar Mantar, Varanasi ⓘ |
| heritageDesignation |
UNESCO World Heritage Site
ⓘ
World Heritage Site No.1338 ⓘ |
| inception | early 18th century ⓘ |
| locatedIn |
Delhi
ⓘ
India ⓘ Jaipur ⓘ Jantar Mantar, Ujjain ⓘ
surface form:
Madhya Pradesh (for Ujjain observatory)
Mathura ⓘ National Capital Territory of Delhi (for Delhi observatory) ⓘ Rajasthan (for Jaipur observatory) ⓘ Ujjain ⓘ Uttar Pradesh (for Varanasi and Mathura observatories) ⓘ Varanasi ⓘ |
| material |
marble
ⓘ
masonry ⓘ stone ⓘ |
| namedAfter |
Maharaja Jai Singh II
ⓘ
surface form:
Maharaja Sawai Jai Singh II
|
| notableFor |
high precision naked-eye observations
ⓘ
integration of architecture and astronomy ⓘ large-scale fixed astronomical instruments ⓘ |
| partOf | scientific heritage of India ⓘ |
| significantPeriod | 18th century ⓘ |
| startTime | 1720s ⓘ |
| UNESCOcategory | Cultural ⓘ |
| UNESCOcriteria |
(ii)
ⓘ
(iv) ⓘ |
| UNESCOinscriptionYear | 2010 ⓘ |
| UNESCOregion |
Asia-Pacific
ⓘ
surface form:
Asia and the Pacific
|
| usedFor |
astrological calculations
ⓘ
astronomical observation ⓘ calendar construction ⓘ naked-eye astronomical measurements ⓘ timekeeping ⓘ |
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: Astronomical Observatories of Jai Singh Description of subject: The Astronomical Observatories of Jai Singh are a group of early 18th-century masonry observatories in India, built by Maharaja Jai Singh II for precise naked-eye astronomical measurements and now recognized as UNESCO World Heritage sites.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Jantar Mantar observatories
this entity surface form:
Jantar Mantar observatories
this entity surface form:
Jai Singh observatories
this entity surface form:
Jai Singh II’s observatories