Beta Doradus
E483242
Beta Doradus is a bright classical Cepheid variable star in the southern constellation Dorado, notable as an important standard candle for measuring cosmic distances.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Beta Doradus canonical | 2 |
| Beta Dor | 1 |
| β Doradus | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4943520 — 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: Beta Doradus Context triple: [Dorado, secondBrightestStar, Beta Doradus]
-
A.
Alpha Doradus
Alpha Doradus is a bright blue-white binary star system in the southern constellation Dorado, notable as its most luminous member.
-
B.
Delta Capricorni
Delta Capricorni is a multiple star system in the constellation Capricornus, notable as its most luminous star and commonly known by the traditional name Deneb Algedi.
-
C.
Alpha Capricorni
Alpha Capricorni is a bright multiple star system in the constellation Capricornus, visible to the naked eye as a single star but actually composed of two widely separated components.
-
D.
Beta Crucis
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.
-
E.
Beta Scuti
Beta Scuti is a prominent giant star in the constellation Scutum, notable as one of its brightest members.
- 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: Beta Doradus Target entity description: Beta Doradus is a bright classical Cepheid variable star in the southern constellation Dorado, notable as an important standard candle for measuring cosmic distances.
-
A.
Alpha Doradus
Alpha Doradus is a bright blue-white binary star system in the southern constellation Dorado, notable as its most luminous member.
-
B.
Delta Capricorni
Delta Capricorni is a multiple star system in the constellation Capricornus, notable as its most luminous star and commonly known by the traditional name Deneb Algedi.
-
C.
Alpha Capricorni
Alpha Capricorni is a bright multiple star system in the constellation Capricornus, visible to the naked eye as a single star but actually composed of two widely separated components.
-
D.
Beta Crucis
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.
-
E.
Beta Scuti
Beta Scuti is a prominent giant star in the constellation Scutum, notable as one of its brightest members.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Cepheid variable star
ⓘ
classical Cepheid variable ⓘ standard candle ⓘ star ⓘ |
| absoluteMagnitudeV | about −4.0 ⓘ |
| apparentMagnitudeV | 3.46 ⓘ |
| apparentMagnitudeVRange | 3.45–3.72 ⓘ |
| BayerDesignation |
β Doradus
ⓘ
linked to:
Beta Doradus
|
| belongsTo |
Dorado constellation
ⓘ
linked to:
constellation Dorado
|
| constellation | Dorado ⓘ |
| coordinateSystem | equatorial coordinate system (J2000) ⓘ |
| declination | −62° 29′ 23″ ⓘ |
| discoveredAsVariableBy | Henrietta Swan Leavitt ⓘ |
| distanceFromEarth |
about 1,000 light-years
ⓘ
about 300 parsecs ⓘ |
| effectiveTemperature | about 5,500–6,000 K ⓘ |
| evolutionaryStage | post-main-sequence supergiant ⓘ |
| galacticPopulation | Population I ⓘ |
| HDNumber | HD 37350 ⓘ |
| hemisphere | southern celestial hemisphere ⓘ |
| HIPNumber | HIP 26311 ⓘ |
| hostGalaxy | Milky Way ⓘ |
| HRNumber | HR 1577 ⓘ |
| luminosity | about 3,000 times solar luminosity ⓘ |
| mass | about 5 solar masses ⓘ |
| metallicity | near solar ⓘ |
| notableFor |
being a bright nearby Cepheid standard candle
ⓘ
helping to calibrate extragalactic distance measurements ⓘ |
| parallax | about 3.3 mas ⓘ |
| properMotionDec | about +3 mas/yr ⓘ |
| properMotionRA | about −6 mas/yr ⓘ |
| pulsationMode | fundamental mode ⓘ |
| radialVelocity | about 7 km/s ⓘ |
| radius | about 65 solar radii ⓘ |
| rightAscension | 05h 33m 37s ⓘ |
| spectralType |
F7Ib
ⓘ
G3Ib ⓘ |
| usedAs |
calibrator for the Cepheid period–luminosity relation
ⓘ
distance indicator ⓘ |
| usedIn |
Hubble constant determinations
ⓘ
cosmic distance scale calibration ⓘ |
| variabilityPeriod | 9.84 days ⓘ |
| variableStarDesignation |
Beta Dor
ⓘ
linked to:
Beta Doradus
|
| variableType | Classical Cepheid ⓘ |
| visibility | best seen from southern latitudes ⓘ |
| visibleToNakedEye | true ⓘ |
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 Doradus Description of subject: Beta Doradus is a bright classical Cepheid variable star in the southern constellation Dorado, notable as an important standard candle for measuring cosmic distances.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.