Polaris
E572584
Polaris is the brightest star in the constellation Ursa Minor and the current North Star, lying nearly in line with Earth's rotational axis and serving as a key reference point for navigation in the Northern Hemisphere.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Polaris canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6174856 — 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: Polaris Context triple: [Northern Celestial Hemisphere, contains, Polaris]
-
A.
Astra
Astra is a prominent Asian work, likely a creative or literary piece, recognized for its cultural and artistic significance within Asia.
-
B.
Trident
Trident is Microsoft's proprietary web browser layout engine that powered Internet Explorer for rendering HTML and web content.
-
C.
Trident
Trident is the iconic three-pronged spear symbol that serves as the emblem of the Italian luxury car manufacturer Maserati.
-
D.
Trident
Trident is a submarine-launched ballistic missile system that forms a key part of the nuclear deterrent forces of the United States and the United Kingdom.
-
E.
Trident
Trident was a warship that took part in the pivotal 1827 naval Battle of Navarino during the Greek War of Independence.
- 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: Polaris Target entity description: Polaris is the brightest star in the constellation Ursa Minor and the current North Star, lying nearly in line with Earth's rotational axis and serving as a key reference point for navigation in the Northern Hemisphere.
-
A.
Astra
Astra is a prominent Asian work, likely a creative or literary piece, recognized for its cultural and artistic significance within Asia.
-
B.
Trident
Trident is Microsoft's proprietary web browser layout engine that powered Internet Explorer for rendering HTML and web content.
-
C.
Trident
Trident is the iconic three-pronged spear symbol that serves as the emblem of the Italian luxury car manufacturer Maserati.
-
D.
Trident
Trident is a submarine-launched ballistic missile system that forms a key part of the nuclear deterrent forces of the United States and the United Kingdom.
-
E.
Trident
Trident was a warship that took part in the pivotal 1827 naval Battle of Navarino during the Greek War of Independence.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Cepheid variable star
ⓘ
North Star ⓘ star ⓘ |
| age_millionYears | about 70 ⓘ |
| alsoKnownAs |
Alpha Ursae Minoris
NERFINISHED
ⓘ
Alruccabah NERFINISHED ⓘ α Ursae Minoris NERFINISHED ⓘ |
| angularSeparationFromNorthCelestialPole_degrees | less than 1 ⓘ |
| apparentMagnitude | 1.98 ⓘ |
| colorIndexB−V | 0.60 ⓘ |
| companionStar |
Polaris Ab
NERFINISHED
ⓘ
Polaris B NERFINISHED ⓘ |
| constellation | Ursa Minor NERFINISHED ⓘ |
| declination | +89° 15′ 50.8″ ⓘ |
| distanceFromEarth_ly | about 433 ⓘ |
| distanceFromEarth_pc | about 133 ⓘ |
| eclipticLatitude_degrees | about +66 ⓘ |
| effectiveTemperature_K | about 6015 ⓘ |
| equatorialCoordinatesEpoch | J2000.0 ⓘ |
| galacticPopulation | Population I ⓘ |
| hasRole | pole star ⓘ |
| hemisphereVisibility | Northern Hemisphere NERFINISHED ⓘ |
| isBrightestStarOf | Ursa Minor NERFINISHED ⓘ |
| isCircumpolarFrom | most mid‑northern latitudes ⓘ |
| isNorthStarSince | late Middle Ages ⓘ |
| locatedIn |
Milky Way
ⓘ
Ursa Minor constellation region NERFINISHED ⓘ |
| luminosity_solarLuminosities | about 1260 ⓘ |
| mass_solarMasses | about 5.4 ⓘ |
| metallicity_FeH | about +0.07 ⓘ |
| nearCelestialPole | true ⓘ |
| orbitalPeriod_PolarisA-Ab_years | about 29.6 ⓘ |
| orbitalPeriod_PolarisA-B_years | about 26,000 ⓘ |
| parallax_mas | 7.54 ⓘ |
| primaryComponent | Polaris A NERFINISHED ⓘ |
| pulsationAmplitude_magnitudes | about 0.03 ⓘ |
| pulsationPeriod_days | about 3.97 ⓘ |
| radialVelocity_kmPerSec | −17 ⓘ |
| radius_solarRadii | about 37.5 ⓘ |
| reasonForNorthStarStatus | alignment with Earth rotational axis ⓘ |
| rightAscension | 02h 31m 49.09s ⓘ |
| spectralClass | F7Ib ⓘ |
| systemComponents |
Polaris A
NERFINISHED
ⓘ
Polaris Ab NERFINISHED ⓘ Polaris B NERFINISHED ⓘ |
| usedFor |
celestial navigation
ⓘ
finding geographic north ⓘ measuring latitude in Northern Hemisphere ⓘ |
| variableType | Classical Cepheid ⓘ |
| willNotRemainNorthStar | true ⓘ |
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: Polaris Description of subject: Polaris is the brightest star in the constellation Ursa Minor and the current North Star, lying nearly in line with Earth's rotational axis and serving as a key reference point for navigation in the Northern Hemisphere.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.