supernova remnant 1E 0102.2-7219
E492377
Supernova remnant 1E 0102.2-7219 is a young, oxygen-rich stellar explosion remnant in the Small Magellanic Cloud, notable for its bright X-ray and optical emission and frequent use as a calibration and study target in high-energy astrophysics.
All labels observed (1)
| Label | Occurrences |
|---|---|
| supernova remnant 1E 0102.2-7219 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5089248 — 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: supernova remnant 1E 0102.2-7219 Context triple: [PGC 3085, contains, supernova remnant 1E 0102.2-7219]
-
A.
SN 1987A
SN 1987A is a famous supernova, the closest observed in modern times, whose 1987 explosion in the Large Magellanic Cloud has provided key insights into stellar death and supernova physics.
-
B.
SN 1572
SN 1572 is a historically significant supernova in the constellation Cassiopeia whose detailed observations by Tycho Brahe helped challenge the Aristotelian view of an unchanging heavens.
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C.
Crab Nebula
The Crab Nebula is a famous supernova remnant and pulsar wind nebula in the constellation Taurus, formed by a stellar explosion observed on Earth in 1054 AD.
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D.
supernova SN 1954J
Supernova SN 1954J is a mid-20th-century stellar explosion event in an external galaxy that became notable through detailed optical observations and analysis by astronomers.
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E.
Ring Nebula
The Ring Nebula is a famous planetary nebula in the constellation Lyra, known for its bright, ring-shaped shell of ionized gas surrounding a hot central white dwarf.
- 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: supernova remnant 1E 0102.2-7219 Target entity description: Supernova remnant 1E 0102.2-7219 is a young, oxygen-rich stellar explosion remnant in the Small Magellanic Cloud, notable for its bright X-ray and optical emission and frequent use as a calibration and study target in high-energy astrophysics.
-
A.
SN 1987A
SN 1987A is a famous supernova, the closest observed in modern times, whose 1987 explosion in the Large Magellanic Cloud has provided key insights into stellar death and supernova physics.
-
B.
SN 1572
SN 1572 is a historically significant supernova in the constellation Cassiopeia whose detailed observations by Tycho Brahe helped challenge the Aristotelian view of an unchanging heavens.
-
C.
Crab Nebula
The Crab Nebula is a famous supernova remnant and pulsar wind nebula in the constellation Taurus, formed by a stellar explosion observed on Earth in 1054 AD.
-
D.
supernova SN 1954J
Supernova SN 1954J is a mid-20th-century stellar explosion event in an external galaxy that became notable through detailed optical observations and analysis by astronomers.
-
E.
Ring Nebula
The Ring Nebula is a famous planetary nebula in the constellation Lyra, known for its bright, ring-shaped shell of ionized gas surrounding a hot central white dwarf.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
X-ray source
ⓘ
astronomical object ⓘ oxygen-rich supernova remnant ⓘ supernova remnant ⓘ |
| alternativeName |
1E0102.2-7219
ⓘ
E0102 ⓘ |
| catalogName | 1E 0102.2-7219 ⓘ |
| discoveredBy | Einstein X-ray Observatory NERFINISHED ⓘ |
| discoveryMethod | X-ray observations ⓘ |
| distanceFromEarth |
about 200000 light-years
ⓘ
about 60 kiloparsecs ⓘ |
| estimatedAge |
about 1000 years
ⓘ
of order 10^3 years ⓘ |
| hasElementAbundance |
enhanced magnesium
ⓘ
enhanced neon ⓘ enhanced oxygen ⓘ |
| hasEmissionLine |
X-ray emission lines of O, Ne, Mg
ⓘ
[O III] optical lines ⓘ |
| hasEnvironment |
interstellar medium of the Small Magellanic Cloud
ⓘ
low-metallicity galaxy ⓘ |
| hasOrigin | core-collapse supernova ⓘ |
| hasPhysicalProperty |
bright X-ray emission
ⓘ
bright optical emission ⓘ expanding shell structure ⓘ high expansion velocity ⓘ nonthermal radio emission ⓘ oxygen-rich ejecta ⓘ young dynamical age ⓘ |
| hasProgenitorType | massive star ⓘ |
| locatedIn |
Small Magellanic Cloud
NERFINISHED
ⓘ
constellation Tucana NERFINISHED ⓘ |
| memberOf | Small Magellanic Cloud NERFINISHED ⓘ |
| observedBy |
ATCA
NERFINISHED
ⓘ
Chandra X-ray Observatory NERFINISHED ⓘ Einstein Observatory NERFINISHED ⓘ Hubble Space Telescope NERFINISHED ⓘ Very Large Telescope NERFINISHED ⓘ XMM-Newton NERFINISHED ⓘ |
| observedIn |
X-ray band
ⓘ
optical band ⓘ radio band ⓘ |
| partOf | Local Group NERFINISHED ⓘ |
| usedAs |
calibration source for X-ray observatories
ⓘ
calibration target for Chandra ⓘ calibration target for XMM-Newton ⓘ calibration target for high-energy astrophysics instruments ⓘ |
| usedFor |
studies of metal enrichment in the interstellar medium
ⓘ
studies of shock physics ⓘ studies of supernova nucleosynthesis ⓘ studies of supernova remnant evolution ⓘ |
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: supernova remnant 1E 0102.2-7219 Description of subject: Supernova remnant 1E 0102.2-7219 is a young, oxygen-rich stellar explosion remnant in the Small Magellanic Cloud, notable for its bright X-ray and optical emission and frequent use as a calibration and study target in high-energy astrophysics.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.