HD 108248
E533148
HD 108248 is the Henry Draper Catalogue designation for Alpha Crucis, the brightest star in the Southern Cross constellation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| HD 108248 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5567831 — 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: HD 108248 Context triple: [Alpha Crucis, hasHDDesignation, HD 108248]
-
A.
HD 23480
HD 23480 is a bright B-type main-sequence star in the constellation Taurus, visible to the naked eye and cataloged under multiple stellar designations including 23 Tauri.
-
B.
HD 278942
HD 278942 is a massive, young, early-type star located in the Perseus constellation and associated with the Perseus OB2 stellar association.
-
C.
HD 24760
HD 24760 is a hot, massive early-type star in the constellation Perseus, notable as a member of the young Perseus OB2 stellar association.
-
D.
HD 23180
HD 23180 is a hot, massive early-type star located in the Perseus constellation and is notable as a prominent member of the Perseus OB2 stellar association.
-
E.
HD 4308
HD 4308 is a nearby Sun-like star in the southern constellation Tucana, known for hosting at least one detected exoplanet.
- 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: HD 108248 Target entity description: HD 108248 is the Henry Draper Catalogue designation for Alpha Crucis, the brightest star in the Southern Cross constellation.
-
A.
HD 23480
HD 23480 is a bright B-type main-sequence star in the constellation Taurus, visible to the naked eye and cataloged under multiple stellar designations including 23 Tauri.
-
B.
HD 278942
HD 278942 is a massive, young, early-type star located in the Perseus constellation and associated with the Perseus OB2 stellar association.
-
C.
HD 24760
HD 24760 is a hot, massive early-type star in the constellation Perseus, notable as a member of the young Perseus OB2 stellar association.
-
D.
HD 23180
HD 23180 is a hot, massive early-type star located in the Perseus constellation and is notable as a prominent member of the Perseus OB2 stellar association.
-
E.
HD 4308
HD 4308 is a nearby Sun-like star in the southern constellation Tucana, known for hosting at least one detected exoplanet.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
B-type star system
ⓘ
multiple star system ⓘ star system ⓘ |
| age_Myr | about 10 ⓘ |
| alsoKnownAs |
Acrux
NERFINISHED
ⓘ
Alpha Crucis NERFINISHED ⓘ α Crucis NERFINISHED ⓘ |
| apparentMagnitudeV | 1.25 ⓘ |
| appearsOnFlagOf |
Australia
NERFINISHED
ⓘ
Brazil (as part of Crux) ⓘ New Zealand NERFINISHED ⓘ Papua New Guinea NERFINISHED ⓘ |
| belongsToStellarPopulation | young disk population ⓘ |
| catalogName | Henry Draper Catalogue NERFINISHED ⓘ |
| colorIndexBminusV | -0.24 ⓘ |
| constellation | Crux NERFINISHED ⓘ |
| declination | −63° 05′ 56″ ⓘ |
| distanceFromEarth_ly | about 320 ⓘ |
| distanceFromEarth_pc | about 98 ⓘ |
| effectiveTemperature_K | about 28,000 (primary component) ⓘ |
| equatorialHemisphere | southern celestial hemisphere ⓘ |
| galacticLatitude_deg | -0.60 ⓘ |
| galacticLongitude_deg | 300.13 ⓘ |
| hasCloseSpectroscopicPair | true ⓘ |
| hasComponent |
Alpha Crucis A
NERFINISHED
ⓘ
Alpha Crucis B NERFINISHED ⓘ Alpha Crucis C NERFINISHED ⓘ |
| hasStrongStellarWinds | true ⓘ |
| isBinary | true ⓘ |
| isBrightestStarIn | Crux NERFINISHED ⓘ |
| isFirstMagnitudeStar | true ⓘ |
| isNakedEyeVisible | true ⓘ |
| isNavigationStar | true ⓘ |
| isOnFlagOfCountry | true ⓘ |
| isPartOfAsterism | Southern Cross NERFINISHED ⓘ |
| isXRaySource | true ⓘ |
| luminositySolar | about 25,000 (primary component) ⓘ |
| massSolar |
about 15 (secondary close component)
ⓘ
about 18 (primary component) ⓘ |
| orbitalPeriod_days | about 76 (inner pair) ⓘ |
| parallax_mas | 10.13 ⓘ |
| parallaxError_mas | 0.15 ⓘ |
| properMotionDec_masPerYr | -14.82 ⓘ |
| properMotionRA_masPerYr | -35.83 ⓘ |
| radialVelocity_kmPerSec | +16 ⓘ |
| radiusSolar | about 7.8 (primary component) ⓘ |
| rightAscension | 12h 26m 35.9s ⓘ |
| spectralType | B0.5 IV + B1 V ⓘ |
| usedForSouthernHemisphereNavigation | true ⓘ |
| visualCompanionMagnitude | 4.8 ⓘ |
| visualCompanionSeparation_arcsec | about 4 ⓘ |
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: HD 108248 Description of subject: HD 108248 is the Henry Draper Catalogue designation for Alpha Crucis, the brightest star in the Southern Cross constellation.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.