United States Naval Observatory Flagstaff Station
E185924
The United States Naval Observatory Flagstaff Station is an astronomical observatory in Flagstaff, Arizona, operated by the U.S. Naval Observatory for high-precision astrometric and related observations.
All labels observed (4)
| Label | Occurrences |
|---|---|
| U.S. Naval Observatory Flagstaff Station | 2 |
| United States Naval Observatory Flagstaff Station canonical | 2 |
| USNO Flagstaff Station | 1 |
| United States Naval Observatory | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1601928 — 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 Flagstaff Station Context triple: [United States Naval Observatory, affiliation, United States Naval Observatory Flagstaff Station]
-
A.
Lowell Observatory
Lowell Observatory is a historic astronomical research institution in Flagstaff, Arizona, renowned for its role in major discoveries including the identification of Pluto.
-
B.
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.
-
C.
Fred Lawrence Whipple Observatory
The Fred Lawrence Whipple Observatory is a major astronomical research facility in Arizona known for its optical and gamma-ray telescopes used to study the universe.
-
D.
Yerkes Observatory
Yerkes Observatory is a historic astronomical observatory in Wisconsin renowned for housing one of the world’s largest refracting telescopes and for its influential role in 20th-century astrophysical research.
-
E.
Mount Wilson Observatory
Mount Wilson Observatory is a historic astronomical observatory in California renowned for its early 20th-century telescopes and pioneering contributions to stellar and galactic astronomy.
- 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 Flagstaff Station Target entity description: The United States Naval Observatory Flagstaff Station is an astronomical observatory in Flagstaff, Arizona, operated by the U.S. Naval Observatory for high-precision astrometric and related observations.
-
A.
Lowell Observatory
Lowell Observatory is a historic astronomical research institution in Flagstaff, Arizona, renowned for its role in major discoveries including the identification of Pluto.
-
B.
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.
-
C.
Fred Lawrence Whipple Observatory
The Fred Lawrence Whipple Observatory is a major astronomical research facility in Arizona known for its optical and gamma-ray telescopes used to study the universe.
-
D.
Yerkes Observatory
Yerkes Observatory is a historic astronomical observatory in Wisconsin renowned for housing one of the world’s largest refracting telescopes and for its influential role in 20th-century astrophysical research.
-
E.
Mount Wilson Observatory
Mount Wilson Observatory is a historic astronomical observatory in California renowned for its early 20th-century telescopes and pioneering contributions to stellar and galactic astronomy.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical observatory
ⓘ
research facility ⓘ |
| affiliation |
United States Department of the Navy
ⓘ
linked to:
Department of the Navy
United States Navy ⓘ |
| contributesTo |
Earth orientation parameters
ⓘ
celestial reference frame catalogs ⓘ solar system ephemerides ⓘ star catalogs ⓘ |
| country | United States of America ⓘ |
| environmentalCondition |
dark-sky site
ⓘ
high-altitude site ⓘ |
| hasAbbreviation | NOFS ⓘ |
| hasFacility |
0.8-meter telescope
ⓘ
1.0-meter telescope ⓘ 1.3-meter telescope ⓘ astrometric reflector telescopes ⓘ data reduction facilities ⓘ instrumentation laboratories ⓘ |
| hasMission |
support for geodesy
ⓘ
support for navigation ⓘ support for precise timing ⓘ support for space operations ⓘ |
| hasObservationType |
astrometric measurements
ⓘ
infrared imaging ⓘ optical imaging ⓘ |
| hasWebsite | https://www.usno.navy.mil/usno/astrometry/nofs ⓘ |
| locatedInAdministrativeTerritorialEntity |
Arizona
ⓘ
Coconino County, Arizona ⓘ |
| locatedInTimeZone |
Mountain Standard Time
ⓘ
linked to:
Mountain Standard Time (no DST)
|
| locatedNear | Lowell Observatory ⓘ |
| locatedOn | Anderson Mesa area (greater Flagstaff region) ⓘ |
| location |
Flagstaff, Arizona
ⓘ
linked to:
Flagstaff
|
| maintainedBy | United States Navy ⓘ |
| operator | United States Naval Observatory ⓘ |
| ownedBy | United States government ⓘ |
| partOf |
Department of Defense astronomical infrastructure
ⓘ
linked to:
United States Space Surveillance Network
United States Naval Observatory ⓘ |
| primaryFunction |
high-precision astrometry
ⓘ
infrared astronomy ⓘ optical astronomy ⓘ |
| specializesIn |
double star observations
ⓘ
faint star astrometry ⓘ solar system small-body astrometry ⓘ |
| usesForResearch |
astrometric observations of solar system objects
ⓘ
astrometric observations of stars ⓘ reference frame maintenance ⓘ timekeeping support ⓘ |
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: United States Naval Observatory Flagstaff Station Description of subject: The United States Naval Observatory Flagstaff Station is an astronomical observatory in Flagstaff, Arizona, operated by the U.S. Naval Observatory for high-precision astrometric and related observations.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
United States Naval Observatory, Washington, D.C.
linked to: United States Naval Observatory Flagstaff Station
linked to: United States Naval Observatory Flagstaff Station
linked to: United States Naval Observatory Flagstaff Station
Flagstaff, Arizona Territory, United States
→
hasFacility
→
U.S. Naval Observatory Flagstaff Station
ⓘ
linked to: United States Naval Observatory Flagstaff Station