Alpha Orionis
E557727
Alpha Orionis is the Bayer designation for Betelgeuse, a prominent red supergiant star in the constellation Orion known for its brightness and variability.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Alpha Orionis canonical | 1 |
| α Orionis | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5958631 — 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: Alpha Orionis Context triple: [Betelgeuse, variableStarDesignation, Alpha Orionis]
-
A.
Delta Orionis
Delta Orionis, traditionally known as Mintaka, is a multiple star system that forms the westernmost star in Orion’s Belt and serves as an important navigational and astrophysical reference point.
-
B.
Gamma Orionis
Gamma Orionis, better known as Bellatrix, is a bright blue giant star in the constellation Orion that serves as one of its prominent shoulder stars.
-
C.
Alpha Doradus
Alpha Doradus is a bright blue-white binary star system in the southern constellation Dorado, notable as its most luminous member.
-
D.
Canopus
Canopus was an ancient Egyptian coastal city near modern-day Alexandria, known as a major religious center and sanctuary dedicated to the goddess Isis.
-
E.
Beta Crucis
Beta Crucis, also known as Mimosa, is a bright blue giant star in the Southern Cross constellation and one of the most prominent navigational stars in the southern sky.
- 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: Alpha Orionis Target entity description: Alpha Orionis is the Bayer designation for Betelgeuse, a prominent red supergiant star in the constellation Orion known for its brightness and variability.
-
A.
Delta Orionis
Delta Orionis, traditionally known as Mintaka, is a multiple star system that forms the westernmost star in Orion’s Belt and serves as an important navigational and astrophysical reference point.
-
B.
Gamma Orionis
Gamma Orionis, better known as Bellatrix, is a bright blue giant star in the constellation Orion that serves as one of its prominent shoulder stars.
-
C.
Alpha Doradus
Alpha Doradus is a bright blue-white binary star system in the southern constellation Dorado, notable as its most luminous member.
-
D.
Canopus
Canopus was an ancient Egyptian coastal city near modern-day Alexandria, known as a major religious center and sanctuary dedicated to the goddess Isis.
-
E.
Beta Crucis
Beta Crucis, also known as Mimosa, is a bright blue giant star in the Southern Cross constellation and one of the most prominent navigational stars in the southern sky.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | star ⓘ |
| alsoKnownAs |
Betelgeuse
NERFINISHED
ⓘ
α Orionis NERFINISHED ⓘ |
| exhibitsMassLoss | true ⓘ |
| formsPartOfAsterism | Orion constellation figure ⓘ |
| greatDimmingCause | combination of dust formation and surface changes ⓘ |
| hasAngularDiameter | about 0.04 arcseconds ⓘ |
| hasApparentMagnitudeV | about 0.0 to +1.6 ⓘ |
| hasAverageApparentMagnitudeV | about +0.5 ⓘ |
| hasBayerDesignation | α Orionis NERFINISHED ⓘ |
| hasCircumstellarDust | true ⓘ |
| hasColorIndexBminusV | +1.85 ⓘ |
| hasCulturalSignificance | featured in many mythologies and modern media ⓘ |
| hasDeclination | +07° 24′ 25.4″ ⓘ |
| hasDistanceFromEarth |
about 170 parsecs
ⓘ
about 550 light-years ⓘ |
| hasEffectiveTemperature | about 3500 K ⓘ |
| hasEquinox | J2000.0 ⓘ |
| hasEstimatedRemainingLifetime | on the order of 10^5 years ⓘ |
| hasExtendedAtmosphere | true ⓘ |
| hasFlamsteedDesignation | 58 Orionis NERFINISHED ⓘ |
| hasLuminosity | about 100,000 times solar luminosity ⓘ |
| hasMass | about 10–20 solar masses ⓘ |
| hasMassLossRate | about 1–2 × 10^-6 solar masses per year ⓘ |
| hasMetallicityFeH | approximately solar ⓘ |
| hasParallax | about 4.51 mas ⓘ |
| hasPrimaryVariabilityPeriod | about 400 days ⓘ |
| hasProperMotionInDec | about 9.56 mas/yr ⓘ |
| hasProperMotionInRA | about 24.95 mas/yr ⓘ |
| hasRadialVelocity | about +21 km/s ⓘ |
| hasRadius | about 700–1000 solar radii ⓘ |
| hasRightAscension | 05h 55m 10.3053s ⓘ |
| hasSecondaryVariabilityPeriod | about 2000 days ⓘ |
| hasSpectralType | M1–M2 Ia–ab ⓘ |
| hasStellarWind | true ⓘ |
| hasSurfaceConvectionCells | true ⓘ |
| hasVariableType | semiregular variable ⓘ |
| isBrightestStarInConstellation | Orion NERFINISHED ⓘ |
| isEvolvedStar | true ⓘ |
| isExpectedToEndAs | core-collapse supernova ⓘ |
| isIrregularInShape | true ⓘ |
| isNorthernHemisphereWinterStar | true ⓘ |
| isOneOfBrightestStarsInSky | true ⓘ |
| isRedSupergiantPhase | true ⓘ |
| isShoulderOfOrion | true ⓘ |
| isVisibleToNakedEye | true ⓘ |
| locatedInConstellation | Orion NERFINISHED ⓘ |
| wasObservedToDimUnusually | 2019–2020 great dimming event ⓘ |
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: Alpha Orionis Description of subject: Alpha Orionis is the Bayer designation for Betelgeuse, a prominent red supergiant star in the constellation Orion known for its brightness and variability.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
α Orionis