WASP-39b
E1006894
WASP-39b is a hot, Saturn-mass exoplanet whose atmosphere—rich in water vapor and detected carbon dioxide—has made it a key target for detailed characterization by the James Webb Space Telescope.
All labels observed (1)
| Label | Occurrences |
|---|---|
| WASP-39b canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12176328 — 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: WASP-39b Context triple: [WASP exoplanet survey, notableDiscovery, WASP-39b]
-
A.
WASP-19b
WASP-19b is an ultra-short-period hot Jupiter exoplanet orbiting extremely close to its host star, making it one of the fastest-orbiting gas giants known.
-
B.
WASP-43b
WASP-43b is a hot Jupiter exoplanet orbiting extremely close to its host star, known for its very short orbital period and intense atmospheric conditions.
-
C.
WASP-96b
WASP-96b is a hot, Jupiter-sized exoplanet notable for its clear atmosphere and detailed spectroscopic observations, including those from the James Webb Space Telescope.
-
D.
WASP-17b
WASP-17b is an extremely low-density, “puffy” exoplanet notable for its retrograde orbit around its star, making it one of the most unusual hot Jupiters discovered.
-
E.
WASP-47b
WASP-47b is a hot Jupiter exoplanet in a uniquely compact multi-planet system, notable for challenging traditional models of giant planet formation and migration.
- 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: WASP-39b Target entity description: WASP-39b is a hot, Saturn-mass exoplanet whose atmosphere—rich in water vapor and detected carbon dioxide—has made it a key target for detailed characterization by the James Webb Space Telescope.
-
A.
WASP-19b
WASP-19b is an ultra-short-period hot Jupiter exoplanet orbiting extremely close to its host star, making it one of the fastest-orbiting gas giants known.
-
B.
WASP-43b
WASP-43b is a hot Jupiter exoplanet orbiting extremely close to its host star, known for its very short orbital period and intense atmospheric conditions.
-
C.
WASP-96b
WASP-96b is a hot, Jupiter-sized exoplanet notable for its clear atmosphere and detailed spectroscopic observations, including those from the James Webb Space Telescope.
-
D.
WASP-17b
WASP-17b is an extremely low-density, “puffy” exoplanet notable for its retrograde orbit around its star, making it one of the most unusual hot Jupiters discovered.
-
E.
WASP-47b
WASP-47b is a hot Jupiter exoplanet in a uniquely compact multi-planet system, notable for challenging traditional models of giant planet formation and migration.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
exoplanet
ⓘ
gas giant planet ⓘ hot Saturn ⓘ |
| atmosphereContains |
carbon dioxide
ⓘ
carbon monoxide ⓘ potassium ⓘ sodium ⓘ sulfur dioxide ⓘ water vapor ⓘ |
| atmosphereFeature | clouds and hazes ⓘ |
| catalogDesignation |
EPIC 228724232 b
ⓘ
TOI-1364 b ⓘ |
| daySideTemperature | on the order of 1100–1200 K ⓘ |
| discoveredBy | Wide Angle Search for Planets ⓘ |
| discoveryMethod | transit method ⓘ |
| discoveryYear | 2011 ⓘ |
| distanceFromEarth | about 700 light-years ⓘ |
| distanceFromEarthUnit | light-year ⓘ |
| equilibriumChemistry | shows evidence of disequilibrium via sulfur dioxide detection ⓘ |
| equilibriumTemperature | about 1100 K ⓘ |
| hasPhaseCurveMeasurements | yes ⓘ |
| hasPhotometricObservations | yes ⓘ |
| hasSpectroscopicObservations | yes ⓘ |
| hasTransit | yes ⓘ |
| hasTransmissionSpectrum | yes ⓘ |
| hostStar | WASP-39 ⓘ |
| hostStarMetallicity | sub-solar ⓘ |
| hostStarType | G-type main-sequence star ⓘ |
| isTidalLocked | likely tidally locked to its star ⓘ |
| JWSTProgram | Early Release Science ⓘ |
| locatedInConstellation | Virgo ⓘ |
| mass | about 0.28 Jupiter masses ⓘ |
| metallicity | atmosphere enriched in heavy elements relative to host star ⓘ |
| notableFor |
detailed atmospheric characterization across a wide wavelength range
ⓘ
first robust detection of CO2 in an exoplanet atmosphere by JWST ⓘ |
| observedBy |
Hubble Space Telescope
ⓘ
James Webb Space Telescope ⓘ Spitzer Space Telescope ⓘ |
| orbitalPeriod | about 4.055 days ⓘ |
| orbitalPeriodUnit | day ⓘ |
| orbits | WASP-39 ⓘ |
| planetarySystem |
WASP-39 system
ⓘ
linked to:
WASP-39
|
| planetType | hot Saturn ⓘ |
| radius | about 1.3 Jupiter radii ⓘ |
| semiMajorAxis | about 0.048 AU ⓘ |
| surfaceGravity | lower than Jupiter’s due to inflated radius ⓘ |
| transitDepth | on the order of a few percent in visible light ⓘ |
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: WASP-39b Description of subject: WASP-39b is a hot, Saturn-mass exoplanet whose atmosphere—rich in water vapor and detected carbon dioxide—has made it a key target for detailed characterization by the James Webb Space Telescope.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.