United States Naval Observatory grounds

E123672

campus federal compound government facility secured area

The United States Naval Observatory grounds are a secure federal compound in northwest Washington, D.C., housing the U.S. Naval Observatory and the official residence of the U.S. vice president.

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All labels observed (2)

Label	Occurrences
U.S. Naval Observatory (new building)	2
United States Naval Observatory grounds canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T1024468 — 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: United States Naval Observatory grounds
Context triple: [Massachusetts Avenue NW, passesNear, United States Naval Observatory grounds]

A. Goodsell Observatory
Goodsell Observatory is a historic astronomical observatory on the campus of Carleton College in Northfield, Minnesota, known for its distinctive Romanesque architecture and long-standing role in teaching and research in astronomy.
B. United States Capitol grounds
The United States Capitol grounds are the landscaped area surrounding the U.S. Capitol building in Washington, D.C., encompassing important monuments, plazas, and public spaces that serve as a focal point of American government and civic life.
C. Addison Circle Park
Addison Circle Park is a central urban green space in Addison, Texas, known for its modern design, public art, and frequent community events and festivals.
D. Capitol Park
Capitol Park is a large, landscaped public park surrounding the California State Capitol in Sacramento, featuring memorials, monuments, and diverse botanical collections.
E. Hat Creek Radio Observatory
Hat Creek Radio Observatory is a radio astronomy facility in Northern California known for hosting the Allen Telescope Array used in both astronomical and SETI research.
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: United States Naval Observatory grounds
Target entity description: The United States Naval Observatory grounds are a secure federal compound in northwest Washington, D.C., housing the U.S. Naval Observatory and the official residence of the U.S. vice president.

A. Goodsell Observatory
Goodsell Observatory is a historic astronomical observatory on the campus of Carleton College in Northfield, Minnesota, known for its distinctive Romanesque architecture and long-standing role in teaching and research in astronomy.
B. United States Capitol grounds
The United States Capitol grounds are the landscaped area surrounding the U.S. Capitol building in Washington, D.C., encompassing important monuments, plazas, and public spaces that serve as a focal point of American government and civic life.
C. Addison Circle Park
Addison Circle Park is a central urban green space in Addison, Texas, known for its modern design, public art, and frequent community events and festivals.
D. Capitol Park
Capitol Park is a large, landscaped public park surrounding the California State Capitol in Sacramento, featuring memorials, monuments, and diverse botanical collections.
E. Hat Creek Radio Observatory
Hat Creek Radio Observatory is a radio astronomy facility in Northern California known for hosting the Allen Telescope Array used in both astronomical and SETI research.
F. None of above. chosen

Statements (33)

Predicate	Object
instanceOf	campus ⓘ federal compound ⓘ government facility ⓘ secured area ⓘ
access	restricted ⓘ
category	Astronomical observatories in Washington, D.C. ⓘ Government buildings in Washington, D.C. ⓘ Official residences in the United States ⓘ United States Navy shore establishment ⓘ surface form: United States Navy installations
contains	Number One Observatory Circle ⓘ United States Naval Observatory, Washington, D.C. ⓘ surface form: United States Naval Observatory administrative buildings ⓘ astronomical observatory facilities ⓘ official residence of the vice president of the United States ⓘ security facilities ⓘ
country	United States of America ⓘ
hasFunction	house the official residence of the U.S. vice president ⓘ support astronomical observations ⓘ support timekeeping operations ⓘ
locatedIn	District of Columbia ⓘ Washington, D.C. ⓘ Northwest Washington, D.C. ⓘ surface form: northwest Washington, D.C.
near	Embassy Row ⓘ Massachusetts Avenue NW ⓘ
operatedBy	United States Naval Observatory, Washington, D.C. ⓘ surface form: United States Naval Observatory United States Navy ⓘ
ownedBy	United States government ⓘ surface form: United States federal government
partOf	federal properties in Washington, D.C. ⓘ
securityStatus	secure compound ⓘ
streetAddress	Number One Observatory Circle ⓘ surface form: Number One Observatory Circle (vice president’s residence address within the grounds)
usedBy	United States Naval Observatory staff ⓘ United States Navy personnel ⓘ Vice President of the United States ⓘ surface form: vice president of the United States

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Massachusetts Avenue NW → passesNear → United States Naval Observatory grounds ⓘ

Paul J. Pelz → notableWork → United States Naval Observatory grounds ⓘ

this entity surface form: U.S. Naval Observatory (new building)

Paul J. Pelz → designed → United States Naval Observatory grounds ⓘ