OGLE-IV
E800554
OGLE-IV is the fourth phase of the Optical Gravitational Lensing Experiment, a large-scale astronomical survey focused on detecting microlensing events and variable stars using advanced wide-field imaging.
All labels observed (2)
| Label | Occurrences |
|---|---|
| OGLE collaboration | 1 |
| OGLE-IV canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9453671 — 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: OGLE-IV Context triple: [OGLE-III, successor, OGLE-IV]
-
A.
O-4
O-4 is a major Turkish motorway forming part of the country's primary east–west highway network.
-
B.
Avgo
Avgo is a notable summit of Mount Pangaion in northern Greece, known for its rugged terrain and scenic views.
-
C.
Avisio
Avisio is a river in northern Italy that flows through the Trentino region before joining the Adige.
-
D.
Opti
Opti is a friendly, futuristic robot character that served as one of the official mascots of Expo 2020 Dubai.
-
E.
Gemini 1.5
Gemini 1.5 is an advanced version of Google’s Gemini AI model family, offering improved multimodal reasoning and performance over earlier releases.
- 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: OGLE-IV Target entity description: OGLE-IV is the fourth phase of the Optical Gravitational Lensing Experiment, a large-scale astronomical survey focused on detecting microlensing events and variable stars using advanced wide-field imaging.
-
A.
O-4
O-4 is a major Turkish motorway forming part of the country's primary east–west highway network.
-
B.
Avgo
Avgo is a notable summit of Mount Pangaion in northern Greece, known for its rugged terrain and scenic views.
-
C.
Avisio
Avisio is a river in northern Italy that flows through the Trentino region before joining the Adige.
-
D.
Opti
Opti is a friendly, futuristic robot character that served as one of the official mascots of Expo 2020 Dubai.
-
E.
Gemini 1.5
Gemini 1.5 is an advanced version of Google’s Gemini AI model family, offering improved multimodal reasoning and performance over earlier releases.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical survey
ⓘ
phase of the Optical Gravitational Lensing Experiment ⓘ |
| alsoKnownAs | OGLE Phase IV ⓘ |
| basedOn | CCD photometry ⓘ |
| contributesTo |
extragalactic distance scale studies via variable stars
ⓘ
mapping of Galactic structure ⓘ studies of dark matter via microlensing constraints ⓘ |
| countryOfOperator | Poland ⓘ |
| dataAccess | publicly available survey data ⓘ |
| dataProduct |
light curves of stars
ⓘ
microlensing event alerts ⓘ transient event catalogs ⓘ variable star catalogs ⓘ |
| field |
astronomy
ⓘ
astrophysics ⓘ |
| follows | OGLE-III ⓘ |
| goal |
detect microlensing events
ⓘ
discover variable stars ⓘ monitor brightness variations of millions of stars ⓘ search for exoplanets via microlensing ⓘ study structure of the Milky Way ⓘ |
| hasFeature |
high-cadence observations in selected fields
ⓘ
large sky coverage ⓘ long-term monitoring ⓘ |
| observes |
Galactic bulge
ⓘ
linked to:
Milky Way center
Galactic disk ⓘ Magellanic Clouds ⓘ |
| operatedBy |
Astronomical Observatory of the University of Warsaw
ⓘ
University of Warsaw ⓘ |
| partOf |
Optical Gravitational Lensing Experiment
ⓘ
time-domain sky surveys ⓘ |
| precededBy | OGLE-III ⓘ |
| researchFocus |
gravitational microlensing
ⓘ
transient astronomical events ⓘ variable stars ⓘ |
| startTime | 2010 ⓘ |
| telescopeLocation | Las Campanas Observatory ⓘ |
| telescopeSiteCountry | Chile ⓘ |
| typicalUse |
classification of variable stars
ⓘ
detection of exoplanets via microlensing anomalies ⓘ search for gravitational microlensing by compact objects ⓘ study of stellar populations ⓘ |
| usesInstrument | wide-field mosaic CCD camera ⓘ |
| usesMethod |
time-domain photometric monitoring
ⓘ
wide-field imaging ⓘ |
| website | http://ogle.astrouw.edu.pl ⓘ |
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: OGLE-IV Description of subject: OGLE-IV is the fourth phase of the Optical Gravitational Lensing Experiment, a large-scale astronomical survey focused on detecting microlensing events and variable stars using advanced wide-field imaging.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: OGLE-IV