Neptune
E21590
Neptune is the eighth and farthest known major planet from the Sun, a cold, blue ice giant characterized by strong winds and a dynamic atmosphere.
All labels observed (10)
| Label | Occurrences |
|---|---|
| Neptune canonical | 70 |
| Nettuno | 2 |
| Neptune (by prediction of its position) | 1 |
| Neptune (gravitationally) | 1 |
| Neptune (via Urbain Le Verrier) | 1 |
| Neptunian system | 1 |
| Orbit of Neptune | 1 |
| astrological planet Neptune | 1 |
| outer planet Neptune | 1 |
| planet Neptune | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T156245 — 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: Neptune Context triple: [Solar System, hasComponent, Neptune]
-
A.
Uranus
Uranus is an ice giant planet in our Solar System, notable for its pale blue-green color and extreme axial tilt that causes it to rotate on its side.
-
B.
Pluto
Pluto is a distant, icy dwarf planet in the Kuiper Belt known for its eccentric orbit and former status as the ninth planet of the Solar System.
-
C.
Saturn
Saturn was an American automobile manufacturer created by General Motors as a separate, innovative small-car brand aimed at competing with Japanese imports.
-
D.
Jupiter
Jupiter is the largest planet in our Solar System, a gas giant known for its Great Red Spot and many moons.
-
E.
Iapetus
Iapetus is a Titan from Greek mythology, often associated with mortality and craftsmanship and known as the father of Prometheus, Epimetheus, Atlas, and Menoetius.
- 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: Neptune Target entity description: Neptune is the eighth and farthest known major planet from the Sun, a cold, blue ice giant characterized by strong winds and a dynamic atmosphere.
-
A.
Uranus
Uranus is an ice giant planet in our Solar System, notable for its pale blue-green color and extreme axial tilt that causes it to rotate on its side.
-
B.
Pluto
Pluto is a distant, icy dwarf planet in the Kuiper Belt known for its eccentric orbit and former status as the ninth planet of the Solar System.
-
C.
Saturn
Saturn was an American automobile manufacturer created by General Motors as a separate, innovative small-car brand aimed at competing with Japanese imports.
-
D.
Jupiter
Jupiter is the largest planet in our Solar System, a gas giant known for its Great Red Spot and many moons.
-
E.
Iapetus
Iapetus is a Titan from Greek mythology, often associated with mortality and craftsmanship and known as the father of Prometheus, Epimetheus, Atlas, and Menoetius.
- F. None of above. chosen
Statements (61)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
gas giant planet ⓘ ice giant ⓘ outer planet ⓘ planet ⓘ |
| albedo | about 0.29 ⓘ |
| atmosphericComposition |
helium
ⓘ
hydrogen ⓘ methane ⓘ |
| atmosphericFeature |
dynamic atmosphere
ⓘ
large storms ⓘ strong winds ⓘ |
| axialTilt | about 28.3 degrees ⓘ |
| belongsTo | Solar System ⓘ |
| colorDescription | blue ⓘ |
| discoveredBy |
Johann Galle
ⓘ
Urbain Le Verrier ⓘ |
| discoveryDate | 1846-09-23 ⓘ |
| discoveryMethod | mathematical prediction ⓘ |
| distanceFromSun_km | about 4.5 billion kilometers ⓘ |
| distanceFromSun_mean | about 30.1 astronomical units ⓘ |
| equatorialDiameter | about 49,244 kilometers ⓘ |
| equatorialGravity | about 11.15 m/s² ⓘ |
| escapeVelocity | about 23.5 km/s ⓘ |
| exploredBy |
Voyager 2
ⓘ
surface form:
Voyager 2 spacecraft
|
| flybyDate_Voyager2 | 1989-08-25 ⓘ |
| hasMagneticField | true ⓘ |
| hasRingSystem | true ⓘ |
| internalStructure |
mantle of water ammonia and methane ices
ⓘ
outer envelope of hydrogen and helium ⓘ rocky core ⓘ |
| largestMoon | Triton ⓘ |
| magneticFieldCharacteristic |
offset from planetary center
ⓘ
tilted relative to rotation axis ⓘ |
| mass | about 1.024e26 kilograms ⓘ |
| massRelativeToEarth | about 17.1 Earth masses ⓘ |
| meanDensity | about 1.64 g/cm³ ⓘ |
| meanRadius | about 24,622 kilometers ⓘ |
| moon |
Despina
ⓘ
Galatea ⓘ Larissa ⓘ Naiad ⓘ Arethusa ⓘ
surface form:
Nereid
Proteus ⓘ Thalassa ⓘ Triton ⓘ |
| namedAfter | Roman god of the sea ⓘ |
| notableStorm | Great Dark Spot ⓘ |
| numberOfKnownMoons | 14 ⓘ |
| orbitalEccentricity | about 0.009 ⓘ |
| orbitalPeriod | about 164.8 Earth years ⓘ |
| positionInSolarSystem | eighth planet from the Sun ⓘ |
| ringName |
Adams ring
ⓘ
Arago ring ⓘ Galle ring ⓘ Arago ring ⓘ
surface form:
Lassell ring
Adams ring ⓘ
surface form:
Le Verrier ring
|
| rotationPeriod | about 16 hours ⓘ |
| symbol | ♆ ⓘ |
| temperature_upperAtmosphere | about −220 degrees Celsius ⓘ |
| windSpeed_max | about 2,100 km/h ⓘ |
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: Neptune Description of subject: Neptune is the eighth and farthest known major planet from the Sun, a cold, blue ice giant characterized by strong winds and a dynamic atmosphere.
Referenced by (80)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Kuiper Belt object
subject surface form:
Kuiper Belt object
this entity surface form:
Nettuno
this entity surface form:
Nettuno
subject surface form:
Imaging Science System
this entity surface form:
Neptune (gravitationally)
subject surface form:
Pluto
subject surface form:
Proteus (moon)
this entity surface form:
Neptunian system
this entity surface form:
Neptune (by prediction of its position)