50 Orionis
E540363
50 Orionis is a star in the constellation Orion, known as the Flamsteed-designated counterpart of the bright multiple star system Alnitak in Orion’s Belt.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 50 Orionis canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5723588 — 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: 50 Orionis Context triple: [Alnitak, hasFlamsteedDesignation, 50 Orionis]
-
A.
Sigma Sagittarii
Sigma Sagittarii is a bright blue-white giant star in the constellation Sagittarius, marking one of the prominent points of the Teapot asterism.
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B.
Zeta Tucanae
Zeta Tucanae is a main-sequence F-type star located in the southern constellation Tucana, visible to the naked eye from dark-sky locations.
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C.
Betelgeuse Five
Betelgeuse Five is the fictional home planet of Zaphod Beeblebrox in Douglas Adams' "The Hitchhiker's Guide to the Galaxy" series.
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D.
Tau Canis Majoris
Tau Canis Majoris is a very luminous, massive blue-white multiple star system located in the constellation Canis Major and is one of the brightest members of the open cluster NGC 2362.
-
E.
Beta Centauri
Beta Centauri is a bright blue-white multiple star system and one of the most luminous and prominent 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: 50 Orionis Target entity description: 50 Orionis is a star in the constellation Orion, known as the Flamsteed-designated counterpart of the bright multiple star system Alnitak in Orion’s Belt.
-
A.
Sigma Sagittarii
Sigma Sagittarii is a bright blue-white giant star in the constellation Sagittarius, marking one of the prominent points of the Teapot asterism.
-
B.
Zeta Tucanae
Zeta Tucanae is a main-sequence F-type star located in the southern constellation Tucana, visible to the naked eye from dark-sky locations.
-
C.
Betelgeuse Five
Betelgeuse Five is the fictional home planet of Zaphod Beeblebrox in Douglas Adams' "The Hitchhiker's Guide to the Galaxy" series.
-
D.
Tau Canis Majoris
Tau Canis Majoris is a very luminous, massive blue-white multiple star system located in the constellation Canis Major and is one of the brightest members of the open cluster NGC 2362.
-
E.
Beta Centauri
Beta Centauri is a bright blue-white multiple star system and one of the most luminous and prominent stars in the southern sky.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf | star ⓘ |
| belongsTo | Orion OB association (region) NERFINISHED ⓘ |
| constellation | Orion NERFINISHED ⓘ |
| distanceFromEarth |
about 1000 light-years
ⓘ
about 300 parsecs ⓘ |
| equatorialCoordinateSystem | ICRS NERFINISHED ⓘ |
| galacticPopulation | thin disk ⓘ |
| hasAlternativeName | 50 Ori ⓘ |
| hasApparentMagnitudeV | about 5.27 ⓘ |
| hasCatalogIdentifier |
BD−01 1015
NERFINISHED
ⓘ
HD 37744 NERFINISHED ⓘ HIP 26736 NERFINISHED ⓘ HR 1948 NERFINISHED ⓘ |
| hasColorIndexBMinusV | about −0.20 ⓘ |
| hasColorIndexUMinusB | about −0.90 ⓘ |
| hasDeclination | in declination range of Orion constellation ⓘ |
| hasEclipticLatitude | near Orion’s Belt region ⓘ |
| hasEffectiveTemperature | about 25,000 K ⓘ |
| hasFlamsteedDesignation | 50 Orionis NERFINISHED ⓘ |
| hasGalacticLatitude | near Galactic plane ⓘ |
| hasGalacticLongitude | in Orion arm region ⓘ |
| hasLuminosity | thousands of times solar luminosity ⓘ |
| hasMass | several times solar mass ⓘ |
| hasMultiplicity | no widely recognized close bright companions ⓘ |
| hasParallax | about 3.0 milliarcseconds ⓘ |
| hasProperMotionDec | small negative ⓘ |
| hasProperMotionRA | small positive ⓘ |
| hasRadialVelocity | about +28 km/s ⓘ |
| hasRightAscension | in hours range of Orion constellation ⓘ |
| hasRotationalVelocity | high ⓘ |
| hasSpectralType | B0.5V ⓘ |
| hasStellarClassification | B-type main-sequence star ⓘ |
| hasSurfaceGravityLogG | about 4.0 ⓘ |
| hasVariableType | not known as a prominent variable star ⓘ |
| isAssociatedWith | Orion’s Belt NERFINISHED ⓘ |
| isCataloguedIn |
Bright Star Catalogue
NERFINISHED
ⓘ
Henry Draper Catalogue NERFINISHED ⓘ Hipparcos Catalogue NERFINISHED ⓘ Tycho Catalogue NERFINISHED ⓘ |
| isCounterpartOf | Alnitak NERFINISHED ⓘ |
| isNearOnSky | Alnitak NERFINISHED ⓘ |
| isPartOf | Milky Way NERFINISHED ⓘ |
| isVisibleToNakedEye | true ⓘ |
| locatedIn | Orion constellation NERFINISHED ⓘ |
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: 50 Orionis Description of subject: 50 Orionis is a star in the constellation Orion, known as the Flamsteed-designated counterpart of the bright multiple star system Alnitak in Orion’s Belt.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.