Mira
E591819
Mira is a famous red giant variable star in the constellation Cetus, known for its dramatic changes in brightness over time.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mira canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T6431293 — 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: Mira Context triple: [Cetus, hasBrightStar, Mira]
-
A.
Mira
Mira is a coastal municipality in central Portugal known for its beaches, lagoons, and natural landscapes.
-
B.
Mira
Mira is a town in the Veneto region of northern Italy, situated along the Brenta Canal between Venice and Padua and known for its historic Venetian villas.
-
C.
Carina
Carina is a prominent southern constellation best known for containing Canopus, the second-brightest star in the night sky.
-
D.
Carina
Carina is a feminine given name used in various cultures, often associated with meanings like “beloved” or “dear.”
-
E.
Marella
Marella is an Italian feminine given name, notably borne by Marella Agnelli, a prominent socialite, art collector, and style icon.
- 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: Mira Target entity description: Mira is a famous red giant variable star in the constellation Cetus, known for its dramatic changes in brightness over time.
-
A.
Mira
Mira is a coastal municipality in central Portugal known for its beaches, lagoons, and natural landscapes.
-
B.
Mira
Mira is a town in the Veneto region of northern Italy, situated along the Brenta Canal between Venice and Padua and known for its historic Venetian villas.
-
C.
Carina
Carina is a prominent southern constellation best known for containing Canopus, the second-brightest star in the night sky.
-
D.
Carina
Carina is a feminine given name used in various cultures, often associated with meanings like “beloved” or “dear.”
-
E.
Marella
Marella is an Italian feminine given name, notably borne by Marella Agnelli, a prominent socialite, art collector, and style icon.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Mira variable
ⓘ
long-period variable star ⓘ pulsating variable star ⓘ red giant star ⓘ star ⓘ |
| alsoKnownAs |
Omicron Ceti
NERFINISHED
ⓘ
ο Ceti NERFINISHED ⓘ |
| apparentMagnitudeRange | about 2.0 to 10.1 ⓘ |
| catalogDesignation |
HD 14386
NERFINISHED
ⓘ
HIP 10732 NERFINISHED ⓘ HR 681 NERFINISHED ⓘ |
| color | red ⓘ |
| constellation | Cetus NERFINISHED ⓘ |
| coreComposition | carbon-oxygen core ⓘ |
| declination | −02° 59′ ⓘ |
| discoveredAsVariableBy | David Fabricius NERFINISHED ⓘ |
| discoveryOfVariabilityYear | 1596 ⓘ |
| distanceFromEarth |
about 300 light-years
ⓘ
about 92 parsecs ⓘ |
| effectiveTemperature | about 3000 K ⓘ |
| evolutionaryStage | asymptotic giant branch star ⓘ |
| futureEvolution | will become a white dwarf ⓘ |
| hasCompanion | Mira B NERFINISHED ⓘ |
| hasFeature |
comet-like tail
ⓘ
extended gaseous envelope ⓘ |
| heliocentricRadialVelocity | about 63 km/s ⓘ |
| isPrototypeOf | Mira variables NERFINISHED ⓘ |
| locatedIn |
Milky Way
ⓘ
Orion Arm NERFINISHED ⓘ |
| luminosity | about 8000 times solar luminosity ⓘ |
| mass | about 1.2 solar masses ⓘ |
| massLoss | strong stellar wind ⓘ |
| MiraBInstanceOf | white dwarf star ⓘ |
| namedBy | Johannes Hevelius NERFINISHED ⓘ |
| nameLanguage | Latin ⓘ |
| nameMeaning | wonderful ⓘ |
| observedInUltravioletBy | GALEX NERFINISHED ⓘ |
| properMotion | high ⓘ |
| radius | about 300 solar radii ⓘ |
| rightAscension | 02h 19m ⓘ |
| spectralType | M7IIIe ⓘ |
| systemType | binary star system ⓘ |
| tailLength | about 13 light-years ⓘ |
| variabilityCause | radial pulsations ⓘ |
| variabilityPeriod | about 332 days ⓘ |
| variableType | Mira-type variable ⓘ |
| visibleToNakedEyeAtMaximum | true ⓘ |
| visibleToNakedEyeAtMinimum | false ⓘ |
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: Mira Description of subject: Mira is a famous red giant variable star in the constellation Cetus, known for its dramatic changes in brightness over time.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.