Chang’e 2
E829210
Chang’e 2 is a Chinese lunar probe launched in 2010 that orbited the Moon for high-resolution mapping before traveling on to study the asteroid 4179 Toutatis.
All labels observed (3)
How this entity was disambiguated
This entity first appeared as the object of triple T9889989 — 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: Chang’e 2 Context triple: [Chang’e lunar exploration program, componentMission, Chang’e 2]
-
A.
Chang’e 1
Chang’e 1 was China’s first lunar orbiter, launched in 2007 to map the Moon’s surface and demonstrate the country’s deep-space exploration capabilities.
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B.
Luna 20
Luna 20 was a Soviet robotic lunar sample-return mission that successfully collected and returned soil from the Moon’s surface in 1972.
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C.
Tianwen-1
Tianwen-1 is China’s first interplanetary mission, consisting of an orbiter, lander, and rover sent to study Mars from orbit and on the surface.
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D.
Kaguya (SELENE) lunar orbiter
Kaguya (SELENE) was a Japanese lunar orbiter mission that conducted detailed scientific mapping and observation of the Moon’s surface, gravity, and environment.
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E.
Zhurong rover
Zhurong rover is China’s first Mars rover, designed to explore the Martian surface as part of the Tianwen-1 mission.
- 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: Chang’e 2 Target entity description: Chang’e 2 is a Chinese lunar probe launched in 2010 that orbited the Moon for high-resolution mapping before traveling on to study the asteroid 4179 Toutatis.
-
A.
Chang’e 1
Chang’e 1 was China’s first lunar orbiter, launched in 2007 to map the Moon’s surface and demonstrate the country’s deep-space exploration capabilities.
-
B.
Luna 20
Luna 20 was a Soviet robotic lunar sample-return mission that successfully collected and returned soil from the Moon’s surface in 1972.
-
C.
Tianwen-1
Tianwen-1 is China’s first interplanetary mission, consisting of an orbiter, lander, and rover sent to study Mars from orbit and on the surface.
-
D.
Kaguya (SELENE) lunar orbiter
Kaguya (SELENE) was a Japanese lunar orbiter mission that conducted detailed scientific mapping and observation of the Moon’s surface, gravity, and environment.
-
E.
Zhurong rover
Zhurong rover is China’s first Mars rover, designed to explore the Martian surface as part of the Tianwen-1 mission.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
lunar probe
ⓘ
spacecraft ⓘ |
| achievedFirstForChina |
first Chinese spacecraft to reach Sun–Earth L2 region
ⓘ
first Chinese spacecraft to visit an asteroid ⓘ |
| alsoKnownAs |
CE-2
ⓘ
Chang’e-2 ⓘ
linked to:
Chang’e 2
|
| asteroidFlybyClosestApproachDistance | approximately 3.2 km ⓘ |
| asteroidFlybyDate | 2012-12-13 ⓘ |
| communicationBand | X band ⓘ |
| countryOfOrigin | China ⓘ |
| enteredLunarOrbit | 2010-10-06 ⓘ |
| instrument |
CCD stereo camera
ⓘ
gamma-ray and X-ray spectrometer ⓘ laser altimeter ⓘ microwave radiometer ⓘ solar wind particle detector ⓘ space environment monitor ⓘ |
| launchDate | 2010-10-01 ⓘ |
| launchSite |
Xichang Satellite Launch Center
ⓘ
Xichang, Sichuan, China ⓘ |
| launchVehicle | Long March 3C ⓘ |
| lunarOrbitAposeleneAltitude | approximately 100 km ⓘ |
| lunarOrbitPeriseleneAltitude | approximately 15 km ⓘ |
| manufacturer | China Academy of Space Technology ⓘ |
| massAtLaunch | approximately 2480 kg ⓘ |
| missionObjective |
asteroid 4179 Toutatis flyby observation
ⓘ
high-resolution mapping of the lunar surface ⓘ support landing site selection for Chang’e 3 ⓘ |
| missionPhase |
Earth–Moon L2 phase
ⓘ
linked to:
Earth–Moon L2 point
asteroid flyby phase ⓘ deep space cruise phase ⓘ lunar orbit phase ⓘ |
| missionStatus | completed ⓘ |
| missionType |
asteroid flyby mission
ⓘ
lunar orbiter ⓘ |
| namedAfter |
Chang’e
ⓘ
linked to:
Chang'e
|
| operator |
CNSA
ⓘ
linked to:
China National Space Administration
China National Space Administration ⓘ |
| performedAsteroidFlyby |
4179 Toutatis
ⓘ
linked to:
asteroid 4179 Toutatis
|
| powerSource | solar panels ⓘ |
| primaryTarget | Moon ⓘ |
| programPredecessorOf | Chang’e 3 ⓘ |
| programSuccessorOf | Chang’e 1 ⓘ |
| secondaryTarget |
4179 Toutatis
ⓘ
linked to:
asteroid 4179 Toutatis
|
| spaceAgency | China National Space Administration ⓘ |
| spacecraftBus | DFH-3 bus ⓘ |
| spaceProgram |
Chinese Lunar Exploration Program
ⓘ
linked to:
Chang’e lunar exploration program
|
| traveledTo |
Sun–Earth L2 region
ⓘ
linked to:
Sun–Earth L2
near-Earth asteroid 4179 Toutatis ⓘ
linked to:
asteroid 4179 Toutatis
|
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: Chang’e 2 Description of subject: Chang’e 2 is a Chinese lunar probe launched in 2010 that orbited the Moon for high-resolution mapping before traveling on to study the asteroid 4179 Toutatis.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Chang’e 2
subject linked to:
asteroid 4179 Toutatis
linked to: Chang’e 2
subject linked to:
asteroid 4179 Toutatis
linked to: Chang’e 2