Leonids
E572587
The Leonids are a prolific annual meteor shower that peaks in mid-November and is known for occasionally producing spectacular meteor storms originating from Comet Tempel–Tuttle.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Leonids canonical | 2 |
| Leonid meteor storm of 1833 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6174911 — 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: Leonids Context triple: [Leo, containsMeteorShower, Leonids]
-
A.
Perseids
The Perseids were the mythological royal dynasty descended from the hero Perseus, associated with several legendary kings and heroes in Greek mythology.
-
B.
Geminids
The Geminids are one of the most prominent annual meteor showers, known for their bright, numerous meteors that appear to radiate from the constellation Gemini each December.
-
C.
Alpha Capricornids
Alpha Capricornids is an annual meteor shower, active in mid-summer, known for producing relatively bright, slow-moving meteors and occasional fireballs.
-
D.
Chi Capricornids
The Chi Capricornids are a minor annual meteor shower that appears to radiate from the constellation Capricornus.
-
E.
Sigma Capricornids
The Sigma Capricornids are a minor annual meteor shower associated with the constellation Capricornus, producing relatively few but occasionally bright meteors.
- 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: Leonids Target entity description: The Leonids are a prolific annual meteor shower that peaks in mid-November and is known for occasionally producing spectacular meteor storms originating from Comet Tempel–Tuttle.
-
A.
Perseids
The Perseids were the mythological royal dynasty descended from the hero Perseus, associated with several legendary kings and heroes in Greek mythology.
-
B.
Geminids
The Geminids are one of the most prominent annual meteor showers, known for their bright, numerous meteors that appear to radiate from the constellation Gemini each December.
-
C.
Alpha Capricornids
Alpha Capricornids is an annual meteor shower, active in mid-summer, known for producing relatively bright, slow-moving meteors and occasional fireballs.
-
D.
Chi Capricornids
The Chi Capricornids are a minor annual meteor shower that appears to radiate from the constellation Capricornus.
-
E.
Sigma Capricornids
The Sigma Capricornids are a minor annual meteor shower associated with the constellation Capricornus, producing relatively few but occasionally bright meteors.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | meteor shower ⓘ |
| activityEnd | around 30 November ⓘ |
| activityStart | around 6 November ⓘ |
| associatedWith | Comet Tempel–Tuttle dust trails ⓘ |
| culturalImpact | 1833 storm widely reported in newspapers and diaries ⓘ |
| discoveredBy |
Horace Parnell Tuttle
ⓘ
Wilhelm Tempel ⓘ |
| hemisphereVisibility | both Northern and Southern Hemispheres ⓘ |
| IAUShowerNumber | 13 ⓘ |
| influenced | development of meteor astronomy after 1833 storm ⓘ |
| knownFor |
bright, fast meteors
ⓘ
highly variable rates between years ⓘ occasional meteor storms ⓘ |
| meteorAppearance | often leave persistent trains ⓘ |
| meteorColor | typically white to bluish ⓘ |
| meteorComposition | dust and small particles from Comet Tempel–Tuttle ⓘ |
| meteorStormDefinition | zenithal hourly rate exceeding 1000 meteors per hour ⓘ |
| meteorTrailEntryAngle | steep relative to Earth’s atmosphere ⓘ |
| meteorVelocity | about 71 km/s ⓘ |
| meteorVelocityCategory | one of the fastest major meteor showers ⓘ |
| name | Leonids ⓘ |
| notableStormLocation1833 | North America ⓘ |
| notableStormYear |
1833
ⓘ
1866 ⓘ 1867 ⓘ 1966 ⓘ 1999 ⓘ 2001 ⓘ |
| observationBestTime | after local midnight ⓘ |
| observationRequirement | dark, clear skies ⓘ |
| orbitPeriodOfParentComet | about 33 years ⓘ |
| parentBody | 55P/Tempel–Tuttle ⓘ |
| parentCometDesignation | 55P/Tempel–Tuttle ⓘ |
| parentCometDiscoveryYear | 1865 ⓘ |
| parentCometPerihelionInterval | about every 33 years ⓘ |
| peakMonth | November ⓘ |
| peakSolarLongitude | about 235° ⓘ |
| radiantConstellation | Leo ⓘ |
| scientificSignificance | helped establish link between comets and meteor showers ⓘ |
| showerCode | LEO ⓘ |
| showerType | cometary debris stream ⓘ |
| stormPeriodicity | enhanced activity near Tempel–Tuttle perihelion ⓘ |
| typicalMeteorMagnitude | around +2 to +3 ⓘ |
| typicalPeakPeriod | mid-November ⓘ |
| typicalZenithalHourlyRate | 10–15 meteors per hour ⓘ |
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: Leonids Description of subject: The Leonids are a prolific annual meteor shower that peaks in mid-November and is known for occasionally producing spectacular meteor storms originating from Comet Tempel–Tuttle.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Leonids