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Old Naval Observatory

astronomical observatory
Organization astronomical_observatory Q1570896
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Summary

Old Naval Observatory is an astronomical observatory[1]. It draws 254 Wikipedia views per month (astronomical observatory category, ranking #40 of 345).[2]

Key Facts

  • Located in the administrative territorial entity: Washington, D.C.[3]
  • Country: United States[4]
  • Commons category: Old United States Naval Observatory[5]
  • Inception: 1843[6]
  • Dissolved, abolished or demolished date: 1893[7]
  • Heritage designation: National Historic Landmark[8], National Register of Historic Places listed place[9], National Register of Historic Places contributing property[10]
  • Date of official opening: 1843[11]
  • Date of official closure: 1893[12]

Why It Matters

Old Naval Observatory is known by 7 alternative names across languages and contexts.[13]

Related Entities

Asaph Hall United States

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [4] ↑ . archINFORM. Retrieved . wikidata.org.
  2. [3] ↑ . archINFORM. Retrieved . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . National Register of Historic Places. wikidata.org.
  8. [10] ↑ . National Register of Historic Places. wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [13] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Old Naval Observatory. Retrieved October 17, 2026, from https://4ort.xyz/entity/old-naval-observatory
MLA “Old Naval Observatory.” 4ort.xyz Knowledge Graph, 4ort.xyz, 17 Oct. 2026, https://4ort.xyz/entity/old-naval-observatory.
BibTeX @misc{4ortxyz_old-naval-observatory_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Old Naval Observatory}}, year = {2026}, url = {https://4ort.xyz/entity/old-naval-observatory}, note = {Accessed: 2026-10-17}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Old Naval Observatory — https://4ort.xyz/entity/old-naval-observatory (retrieved 2026-10-17)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 7d ago · Bamyers99 · 2026-10-10 view diff on Wikidata ↗
    Inception → +1843-00-00T00:00:00Z
    Instance of → —
    Inception → —
    Wikipedia languages → ['arz', 'commons', 'de', 'en', 'hy', 'lb', 'ru', 'ur', 'zh']
    + 12 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ Heritage designation: National Register of Historic Places contributing property"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.