Tau Canis Majoris
E520069
Tau Canis Majoris is a very luminous, massive blue-white multiple star system located in the constellation Canis Major and is one of the brightest members of the open cluster NGC 2362.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tau Canis Majoris canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5259956 — 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: Tau Canis Majoris Context triple: [Canis Major, contains, Tau Canis Majoris]
-
A.
Eta Canis Majoris
Eta Canis Majoris, also known as Aludra, is a luminous blue supergiant star in the constellation Canis Major and one of its brightest members.
-
B.
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.
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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.
Zeta Canis Majoris
Zeta Canis Majoris, also known as Furud, is a bright B-type main-sequence star in the constellation Canis Major.
- 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: Tau Canis Majoris Target entity description: Tau Canis Majoris is a very luminous, massive blue-white multiple star system located in the constellation Canis Major and is one of the brightest members of the open cluster NGC 2362.
-
A.
Eta Canis Majoris
Eta Canis Majoris, also known as Aludra, is a luminous blue supergiant star in the constellation Canis Major and one of its brightest members.
-
B.
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.
-
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.
Zeta Canis Majoris
Zeta Canis Majoris, also known as Furud, is a bright B-type main-sequence star in the constellation Canis Major.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
massive star
ⓘ
multiple star system ⓘ |
| absoluteMagnitudeV | about −6.9 ⓘ |
| age_Myr | about 4 ⓘ |
| apparentMagnitudeV | 4.39 ⓘ |
| catalogDesignation |
HD 57061
NERFINISHED
ⓘ
HIP 35415 NERFINISHED ⓘ HR 2782 NERFINISHED ⓘ τ CMa NERFINISHED ⓘ |
| color | blue-white ⓘ |
| colorIndexB−V | −0.19 ⓘ |
| constellation | Canis Major NERFINISHED ⓘ |
| declination | −24° 57′ 16″ ⓘ |
| distanceFromEarth_ly | about 4,800 light-years ⓘ |
| distanceFromEarth_pc | about 1,470 parsecs ⓘ |
| dominatesClusterLightOf | NGC 2362 NERFINISHED ⓘ |
| effectiveTemperature_K | 32000 ⓘ |
| epoch | J2000 ⓘ |
| evolutionaryStage | supergiant ⓘ |
| galacticPopulation | young disk ⓘ |
| hasComponent |
Tau Canis Majoris A
NERFINISHED
ⓘ
Tau Canis Majoris B NERFINISHED ⓘ Tau Canis Majoris C NERFINISHED ⓘ Tau Canis Majoris D NERFINISHED ⓘ |
| hasOpenCluster | NGC 2362 NERFINISHED ⓘ |
| isBrightestMemberOf | NGC 2362 NERFINISHED ⓘ |
| isIonizingSourceFor | surrounding interstellar gas in NGC 2362 ⓘ |
| isPartOf | Milky Way NERFINISHED ⓘ |
| locatedIn | southern celestial hemisphere ⓘ |
| luminositySolar | about 280000 ⓘ |
| massSolar | about 40 ⓘ |
| memberOf | NGC 2362 NERFINISHED ⓘ |
| metallicity_Fe_H | approximately solar ⓘ |
| multiplicity | multiple ⓘ |
| parallax_mas | 0.68 ⓘ |
| parallaxError_mas | 0.16 ⓘ |
| properMotionDec_mas_yr | +3.46 ⓘ |
| properMotionRA_mas_yr | −2.09 ⓘ |
| radialVelocity_km_s | +58 ⓘ |
| radiusSolar | about 17 ⓘ |
| rightAscension | 07h 18m 42.5s ⓘ |
| spectralType | O9Ib ⓘ |
| variableType | Beta Lyrae-type eclipsing binary (suspected) ⓘ |
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: Tau Canis Majoris Description of subject: Tau Canis Majoris is a very luminous, massive blue-white multiple star system located in the constellation Canis Major and is one of the brightest members of the open cluster NGC 2362.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.