Betelgeuse
E132578
Betelgeuse is a massive red supergiant star in the constellation Orion, notable for its brightness and status as a likely future supernova.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Betelgeuse canonical | 21 |
| Betelgeuse system | 2 |
| Betelgeuse (star) | 1 |
| Betelgeuse is designated Alpha Ori | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1092369 — 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: Betelgeuse Context triple: [Orion, hasBrightStar, Betelgeuse]
-
A.
Betelgeuse Five
Betelgeuse Five is the fictional home planet of Zaphod Beeblebrox in Douglas Adams' "The Hitchhiker's Guide to the Galaxy" series.
-
B.
Baade’s star
Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
-
C.
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.
-
D.
Alnitak
Alnitak is a bright multiple star system in the constellation Orion, forming the easternmost star of the prominent asterism known as Orion’s Belt.
-
E.
Epsilon Sagittarii
Epsilon Sagittarii is a prominent binary star system in the constellation Sagittarius, notable as one of its most luminous and easily visible stars.
- 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: Betelgeuse Target entity description: Betelgeuse is a massive red supergiant star in the constellation Orion, notable for its brightness and status as a likely future supernova.
-
A.
Betelgeuse Five
Betelgeuse Five is the fictional home planet of Zaphod Beeblebrox in Douglas Adams' "The Hitchhiker's Guide to the Galaxy" series.
-
B.
Baade’s star
Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
-
C.
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.
-
D.
Alnitak
Alnitak is a bright multiple star system in the constellation Orion, forming the easternmost star of the prominent asterism known as Orion’s Belt.
-
E.
Epsilon Sagittarii
Epsilon Sagittarii is a prominent binary star system in the constellation Sagittarius, notable as one of its most luminous and easily visible stars.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
red supergiant star
ⓘ
semiregular variable star ⓘ star ⓘ variable star ⓘ |
| absoluteMagnitudeV | about −5.8 ⓘ |
| age | about 8 to 10 million years ⓘ |
| apparentMagnitudeV | about 0.0 to +1.6 ⓘ |
| averageApparentMagnitudeV | about 0.5 ⓘ |
| BayerDesignation |
α Orionis
ⓘ
linked to:
Alpha Orionis
|
| catalogIdentifier |
HD 39801
ⓘ
HIP 27989 ⓘ HR 2061 ⓘ SAO 113271 ⓘ |
| color | red ⓘ |
| constellation | Orion ⓘ |
| declination | +07° 24′ 25″ ⓘ |
| distanceFromEarth |
about 170 parsecs
ⓘ
about 550 light-years ⓘ |
| effectiveTemperature | about 3500 K ⓘ |
| evolutionaryStage | late-stage massive star ⓘ |
| FlamsteedDesignation | 58 Orionis ⓘ |
| formsPartOf | Orion’s shoulder in traditional depictions ⓘ |
| futureEvolution | will explode as a core-collapse supernova ⓘ |
| galacticLatitude | about −8° ⓘ |
| galacticLongitude | about 201° ⓘ |
| galacticPopulation | Population I star ⓘ |
| greatDimmingCause | combination of dust formation and surface changes ⓘ |
| hasCircumstellarDust | true ⓘ |
| hasExtendedAtmosphere | true ⓘ |
| hasMassLoss | strong stellar wind ⓘ |
| hasObservedDimmingEvent | 2019–2020 great dimming ⓘ |
| hasSurfaceActivity | large convection cells ⓘ |
| isBrightestStarOf | Orion constellation ⓘ |
| isCornerStarOf |
Orion asterism
ⓘ
linked to:
Orion constellation
|
| isNearbyMassiveStar | true ⓘ |
| isObservableIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| luminosity | about 100000 times the Sun’s luminosity ⓘ |
| mass | about 15 to 20 solar masses ⓘ |
| massLossRate | about 1–2 × 10⁻⁶ solar masses per year ⓘ |
| parallax | about 4.5 milliarcseconds ⓘ |
| properMotion | high for a red supergiant ⓘ |
| radialVelocity | about +21 km/s ⓘ |
| radius | about 900 times the Sun’s radius ⓘ |
| rankByBrightnessInNightSky | among the ten brightest stars ⓘ |
| rightAscension | 05h 55m 10.3s ⓘ |
| spectralType | M1-2 Ia-ab ⓘ |
| supernovaTimescaleEstimate | within the next million years ⓘ |
| variabilityType | SRC (semiregular late-type supergiant) ⓘ |
| variableStarDesignation | Alpha Orionis ⓘ |
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: Betelgeuse Description of subject: Betelgeuse is a massive red supergiant star in the constellation Orion, notable for its brightness and status as a likely future supernova.
Referenced by (25)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Betelgeuse
linked to: Betelgeuse
linked to: Betelgeuse
linked to: Betelgeuse
subject linked to:
Orion constellation
subject linked to:
Orion constellation
subject linked to:
Orion constellation