Beta Crucis

E147971

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.

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All labels observed (6)

Label Occurrences
Beta Crucis canonical 6
β Crucis 2
Beta Crucis A 1

Statements (48)

Predicate Object
instanceOf B-type star
Beta Cephei variable
blue giant star
multiple star system
star
belongsToAssociation Lower Centaurus–Crux
surface form: Lower Centaurus–Crux subgroup

Scorpius–Centaurus OB association
hasAge_Myr about 8 to 10
hasAlternativeName Mimosa
hasAngularSeparationFromA_B about 4 arcseconds
hasAngularSeparationFromA_C about 30 arcseconds
hasApparentMagnitudeV 1.25
hasBayerDesignation Beta Crucis self-linksurface differs
surface form: β Crucis
hasCatalogIdentifier CD−59 4504
HD 111123
HIP 62434
HR 4853
hasColor blue
hasCompanion Beta Crucis self-linksurface differs
surface form: Beta Crucis B

Beta Crucis self-linksurface differs
surface form: Beta Crucis C
hasConstellationAbbreviation Cru
hasCulturalSignificance important southern navigational star
hasDeclination −59° 41′ 19″
hasDistanceFromEarth_ly about 280 light-years
hasDistanceFromEarth_pc about 86 parsecs
hasEffectiveTemperature_K about 27,000
hasEquinox J2000.0
hasFlamsteedDesignation 3 Crucis
hasGalacticLatitude_deg −0.36
hasGalacticLongitude_deg 300.13
hasLuminosity_solar about 34,000
hasMass_solar about 16
hasParallax_mas 11.71
hasPulsation non-radial pulsations
hasRadialVelocity_km_per_s +15
hasRadius_solar about 8.4
hasRightAscension 12h 47m 43.3s
hasSpectralType B0.5 III
hasVariabilityType Beta Cephei
isAmongBrightestStars yes
isAsterismMember Crux constellation
surface form: Southern Cross asterism
isNavigationalStar true
isPartOf Southern Cross
isPrimaryOfSystem Beta Crucis self-linksurface differs
surface form: Beta Crucis A
isProminentInHemisphere southern sky
isUsedForNavigation true
isVariableStar true
locatedInConstellation Crux

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: Beta Crucis
Description of subject: 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.

Referenced by (12)

Full triples — surface form annotated when it differs from this entity's canonical label.

Australian national flag hasStar Beta Crucis
Southern Cross hasBayerDesignation Beta Crucis
Beta Crucis hasBayerDesignation Beta Crucis self-linksurface differs
this entity surface form: β Crucis
Beta Crucis hasCompanion Beta Crucis self-linksurface differs
this entity surface form: Beta Crucis B
Beta Crucis hasCompanion Beta Crucis self-linksurface differs
this entity surface form: Beta Crucis C
Beta Crucis isPrimaryOfSystem Beta Crucis self-linksurface differs
this entity surface form: Beta Crucis A
Gamma Crucis formsAsterismWith Beta Crucis
Crux Australis hasBayerDesignation Beta Crucis
Mimosa alsoKnownAs Beta Crucis
Mimosa alsoKnownAs Beta Crucis
this entity surface form: β Crucis
Mimosa alsoKnownAs Beta Crucis
this entity surface form: β Cru
Mimosa hasBayerDesignation Beta Crucis