Eta Canis Majoris
E518409
Eta Canis Majoris, also known as Aludra, is a luminous blue supergiant star in the constellation Canis Major and one of its brightest members.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Eta Canis Majoris canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5259954 — 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: Eta Canis Majoris Context triple: [Canis Major, contains, Eta Canis Majoris]
-
A.
Epsilon Canis Majoris
Epsilon Canis Majoris, also known as Adhara, is a bright blue-white giant star and one of the most luminous stars visible from Earth, located in the constellation Canis Major.
-
B.
Zeta Canis Majoris
Zeta Canis Majoris, also known as Furud, is a bright B-type main-sequence star in the constellation Canis Major.
-
C.
Delta Canis Majoris
Delta Canis Majoris, also known as Wezen, is a bright F-type supergiant star in the constellation Canis Major that forms part of the prominent winter sky near Sirius.
-
D.
Beta Canis Majoris
Beta Canis Majoris is a bright blue-white giant star in the constellation Canis Major, notable as one of its most luminous and prominent members.
-
E.
Gamma Canis Majoris
Gamma Canis Majoris, also known as Muliphein, is a relatively faint blue-white star in the constellation Canis Major that forms part of the celestial "Great Dog" near the bright star Sirius.
- 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: Eta Canis Majoris Target entity description: Eta Canis Majoris, also known as Aludra, is a luminous blue supergiant star in the constellation Canis Major and one of its brightest members.
-
A.
Epsilon Canis Majoris
Epsilon Canis Majoris, also known as Adhara, is a bright blue-white giant star and one of the most luminous stars visible from Earth, located in the constellation Canis Major.
-
B.
Zeta Canis Majoris
Zeta Canis Majoris, also known as Furud, is a bright B-type main-sequence star in the constellation Canis Major.
-
C.
Delta Canis Majoris
Delta Canis Majoris, also known as Wezen, is a bright F-type supergiant star in the constellation Canis Major that forms part of the prominent winter sky near Sirius.
-
D.
Beta Canis Majoris
Beta Canis Majoris is a bright blue-white giant star in the constellation Canis Major, notable as one of its most luminous and prominent members.
-
E.
Gamma Canis Majoris
Gamma Canis Majoris, also known as Muliphein, is a relatively faint blue-white star in the constellation Canis Major that forms part of the celestial "Great Dog" near the bright star Sirius.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Alpha Cygni variable
ⓘ
star ⓘ |
| belongsToAsterism | Canis Major asterism NERFINISHED ⓘ |
| hasAge | around 8 million years ⓘ |
| hasApparentMagnitudeV |
1.98
ⓘ
approximately 2.0 ⓘ |
| hasArabicName | Aludra NERFINISHED ⓘ |
| hasBayerDesignation | η Canis Majoris NERFINISHED ⓘ |
| hasBDDesignation | BD−28 1900 NERFINISHED ⓘ |
| hasColorIndexBMinusV | about −0.19 ⓘ |
| hasColorIndexUMinusB | about −0.88 ⓘ |
| hasDeclination | −28° 58′ 20″ ⓘ |
| hasDistanceFromEarth |
about 2,000 light-years
ⓘ
about 600 parsecs ⓘ |
| hasEffectiveTemperature | about 16,000 K ⓘ |
| hasEquinox | J2000.0 ⓘ |
| hasFlamsteedDesignation | 24 Canis Majoris NERFINISHED ⓘ |
| hasGalacticPopulation | thin disk ⓘ |
| hasHDDesignation | HD 58350 NERFINISHED ⓘ |
| hasHIPDesignation | HIP 36188 NERFINISHED ⓘ |
| hasHRDesignation | HR 2827 NERFINISHED ⓘ |
| hasLuminosity | about 105,000 times solar luminosity ⓘ |
| hasMass | about 18 solar masses ⓘ |
| hasMetallicityFeH | approximately solar ⓘ |
| hasName | Aludra NERFINISHED ⓘ |
| hasParallax | about 1.78 milliarcseconds ⓘ |
| hasProperMotionInDec | +4.21 mas/yr ⓘ |
| hasProperMotionInRA | −3.65 mas/yr ⓘ |
| hasRadialVelocity | about +34 km/s ⓘ |
| hasRadius | about 54 solar radii ⓘ |
| hasRightAscension | 06h 58m 37s ⓘ |
| hasSAODesignation | SAO 173047 NERFINISHED ⓘ |
| hasSpectralType | B5Ia ⓘ |
| hasSurfaceGravityLogG | around 2.0 ⓘ |
| hasVariabilityAmplitude | a few hundredths of a magnitude ⓘ |
| hasVariabilityType | Alpha Cygni NERFINISHED ⓘ |
| isEvolutionaryStage | post-main-sequence ⓘ |
| isLikelyToEndAs | core-collapse supernova ⓘ |
| isNakedEyeVisible | true ⓘ |
| isOneOfBrightestStarsIn | Canis Major NERFINISHED ⓘ |
| isPartOf | Milky Way Galaxy NERFINISHED ⓘ |
| isVisibleFrom |
Southern Hemisphere
ⓘ
low northern latitudes ⓘ |
| locatedInConstellation | Canis Major NERFINISHED ⓘ |
| nameMeaning | “the virgin” in Arabic 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: Eta Canis Majoris Description of subject: Eta Canis Majoris, also known as Aludra, is a luminous blue supergiant star in the constellation Canis Major and one of its brightest members.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.