W. M. Keck Observatory
E94854
W. M. Keck Observatory is a world-leading astronomical research facility in Hawaii that operates two of the largest optical and infrared telescopes on Earth.
All labels observed (3)
| Label | Occurrences |
|---|---|
| W. M. Keck Observatory canonical | 9 |
| Keck I telescope | 2 |
| Keck II telescope | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T796334 — 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: W. M. Keck Observatory Context triple: [Mauna Kea, hasObservatory, W. M. Keck Observatory]
-
A.
Gemini North Observatory
Gemini North Observatory is a premier 8.1-meter optical/infrared telescope facility located on Maunakea in Hawaii, forming one half of the international Gemini Observatory.
-
B.
Cerro Tololo Inter-American Observatory
Cerro Tololo Inter-American Observatory is a major astronomical observatory complex in northern Chile that hosts multiple world-class telescopes used for cutting-edge research on the universe.
-
C.
Gemini South Observatory
Gemini South Observatory is a major 8.1-meter optical and infrared telescope facility located on Cerro Pachón in Chile, forming the southern half of the international Gemini Observatory.
-
D.
Víctor M. Blanco 4-meter Telescope
The Víctor M. Blanco 4-meter Telescope is a prominent optical telescope in Chile widely used for deep-sky surveys and cosmological research.
-
E.
du Pont Telescope
The du Pont Telescope is a 2.5-meter optical telescope at Chile’s Las Campanas Observatory used for a wide range of astronomical imaging and spectroscopic 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: W. M. Keck Observatory Target entity description: W. M. Keck Observatory is a world-leading astronomical research facility in Hawaii that operates two of the largest optical and infrared telescopes on Earth.
-
A.
Gemini North Observatory
Gemini North Observatory is a premier 8.1-meter optical/infrared telescope facility located on Maunakea in Hawaii, forming one half of the international Gemini Observatory.
-
B.
Cerro Tololo Inter-American Observatory
Cerro Tololo Inter-American Observatory is a major astronomical observatory complex in northern Chile that hosts multiple world-class telescopes used for cutting-edge research on the universe.
-
C.
Gemini South Observatory
Gemini South Observatory is a major 8.1-meter optical and infrared telescope facility located on Cerro Pachón in Chile, forming the southern half of the international Gemini Observatory.
-
D.
Víctor M. Blanco 4-meter Telescope
The Víctor M. Blanco 4-meter Telescope is a prominent optical telescope in Chile widely used for deep-sky surveys and cosmological research.
-
E.
du Pont Telescope
The du Pont Telescope is a 2.5-meter optical telescope at Chile’s Las Campanas Observatory used for a wide range of astronomical imaging and spectroscopic research.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical observatory
ⓘ
research facility ⓘ |
| affiliatedWith |
California Institute of Technology
ⓘ
NASA ⓘ University of California system ⓘ
surface form:
University of California
|
| altitude | approximately 4145 meters ⓘ |
| constructionStartDate | 1985 ⓘ |
| coordinates | approximately 19.826° N, 155.474° W ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| firstLightDate |
1990 (Keck I)
ⓘ
1996 (Keck II) ⓘ |
| foundedBy | W. M. Keck Foundation ⓘ |
| fundedBy |
NASA
ⓘ
California, United States ⓘ
surface form:
State of California
W. M. Keck Foundation ⓘ |
| governingBody | California Association for Research in Astronomy ⓘ |
| hasApertureSize |
10-meter (Keck I)
ⓘ
10-meter (Keck II) ⓘ |
| hasDomeCount | 2 ⓘ |
| hasInstrument |
DEIMOS spectrograph
ⓘ
HIRES spectrograph ⓘ LRIS spectrograph ⓘ NIRC2 camera ⓘ OSIRIS spectrograph ⓘ |
| hasMirrorSegments | 36 (per primary mirror) ⓘ |
| knownFor |
exoplanet research
ⓘ
high-resolution spectroscopy ⓘ large-aperture ground-based telescopes ⓘ observations of distant galaxies ⓘ studies of the Galactic Center ⓘ |
| locatedIn |
Hawaii
ⓘ
Hawaiʻi (island) ⓘ
surface form:
Island of Hawaii
|
| locatedOn | Mauna Kea ⓘ |
| namedAfter | William Myron Keck ⓘ |
| observatoryCode | 568 ⓘ |
| operatedBy | California Association for Research in Astronomy ⓘ |
| operates |
W. M. Keck Observatory
self-linksurface differs
ⓘ
surface form:
Keck I telescope
W. M. Keck Observatory self-linksurface differs ⓘ
surface form:
Keck II telescope
|
| partOf | Mauna Kea Observatories ⓘ |
| primaryResearchField |
astronomy
ⓘ
astrophysics ⓘ |
| telescopeMountType | alt-azimuth mount ⓘ |
| telescopeType |
infrared telescope
ⓘ
optical telescope ⓘ |
| usesTechnology |
adaptive optics
ⓘ
interferometry ⓘ segmented primary mirror ⓘ |
| website | https://www.keckobservatory.org/ ⓘ |
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: W. M. Keck Observatory Description of subject: W. M. Keck Observatory is a world-leading astronomical research facility in Hawaii that operates two of the largest optical and infrared telescopes on Earth.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Keck I telescope
this entity surface form:
Keck II telescope
subject surface form:
Mauna Kea
this entity surface form:
Keck I telescope
this entity surface form:
Keck II telescope