Alpha Persei
E556821
Alpha Persei is the brightest star in the constellation Perseus, a luminous F-type supergiant visible to the naked eye.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Alpha Persei canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5911119 — 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 Persei Context triple: [Perseus constellation, contains, Alpha Persei]
-
A.
Beta Persei
Beta Persei, better known as Algol, is a famous eclipsing binary star system whose periodic dimming made it one of the first variable stars recognized in the night sky.
-
B.
Alpha Doradus
Alpha Doradus is a bright blue-white binary star system in the southern constellation Dorado, notable as its most luminous member.
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C.
Alpha Telescopii
Alpha Telescopii is a blue-white giant star that serves as the primary luminary of the southern constellation Telescopium.
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D.
Alpha Geminorum
Alpha Geminorum, also known as Castor, is one of the brightest stars in the constellation Gemini and is actually a complex multiple-star system.
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E.
ζ Persei
ζ Persei is a bright, massive B-type star in the constellation Perseus, notable as a prominent member of the Perseus OB2 stellar association.
- 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 Persei Target entity description: Alpha Persei is the brightest star in the constellation Perseus, a luminous F-type supergiant visible to the naked eye.
-
A.
Beta Persei
Beta Persei, better known as Algol, is a famous eclipsing binary star system whose periodic dimming made it one of the first variable stars recognized in the night sky.
-
B.
Alpha Doradus
Alpha Doradus is a bright blue-white binary star system in the southern constellation Dorado, notable as its most luminous member.
-
C.
Alpha Telescopii
Alpha Telescopii is a blue-white giant star that serves as the primary luminary of the southern constellation Telescopium.
-
D.
Alpha Geminorum
Alpha Geminorum, also known as Castor, is one of the brightest stars in the constellation Gemini and is actually a complex multiple-star system.
-
E.
ζ Persei
ζ Persei is a bright, massive B-type star in the constellation Perseus, notable as a prominent member of the Perseus OB2 stellar association.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
F-type star
ⓘ
star ⓘ supergiant star ⓘ |
| absoluteMagnitudeV | -4.6 ⓘ |
| age_Myr | ~50 ⓘ |
| alsoKnownAs |
Algenib (historical)
NERFINISHED
ⓘ
Alpha Per NERFINISHED ⓘ Mirfak NERFINISHED ⓘ Mirphak NERFINISHED ⓘ α Persei NERFINISHED ⓘ |
| apparentMagnitudeV | 1.79 ⓘ |
| belongsToCluster | Alpha Persei Cluster NERFINISHED ⓘ |
| colorIndexBminusV | 0.48 ⓘ |
| declination | +49° 51′ 40″ ⓘ |
| distanceFromEarth_ly | ~510 ⓘ |
| distanceFromEarth_pc | ~155 ⓘ |
| effectiveTemperature_K | ~6350 ⓘ |
| equatorialCoordinateSystem | ICRS NERFINISHED ⓘ |
| evolutionaryStage | post-main-sequence supergiant ⓘ |
| galacticLatitude | -17.1° ⓘ |
| galacticLongitude | 146.5° ⓘ |
| hasBayerDesignation | α Persei NERFINISHED ⓘ |
| hasFlamsteedDesignation | 33 Persei NERFINISHED ⓘ |
| hasTraditionalName | Mirfak NERFINISHED ⓘ |
| hostPlanetsKnown | no confirmed planets ⓘ |
| isBrightestStarIn | Perseus NERFINISHED ⓘ |
| isDominantStarOf | Alpha Persei Cluster NERFINISHED ⓘ |
| isNavigationStar | yes ⓘ |
| locatedInConstellation | Perseus NERFINISHED ⓘ |
| luminosity_solarLuminosity | ~5000 ⓘ |
| mass_solarMass | ~8.5 ⓘ |
| metallicity_FeH | approximately solar ⓘ |
| nameOrigin | Arabic ⓘ |
| parallax_mas | ~6.5 ⓘ |
| partOfAsterism | Alpha Persei Moving Cluster NERFINISHED ⓘ |
| properMotionDec_masPerYr | ~-26 ⓘ |
| properMotionRA_masPerYr | ~23 ⓘ |
| radialVelocity_kmPerSec | ~-2 ⓘ |
| radius_solarRadius | ~60 ⓘ |
| rightAscension | 03h 24m 19s ⓘ |
| spectralType | F5 Ib ⓘ |
| surfaceGravity_logg | ~1.5 ⓘ |
| variableStarType | non-variable or very low amplitude ⓘ |
| visibleFromHemisphere | Northern Hemisphere NERFINISHED ⓘ |
| visibleToNakedEye | yes ⓘ |
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 Persei Description of subject: Alpha Persei is the brightest star in the constellation Perseus, a luminous F-type supergiant visible to the naked eye.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.