Phobos 2
E500633
Phobos 2 was a Soviet space probe launched in 1988 to study Mars and its moon Phobos as part of the Phobos program.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Phobos 2 canonical | 3 |
| Phobos program | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5051104 — 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: Phobos 2 Context triple: [Phobos, hasExplorationBy, Phobos 2]
-
A.
Mars 3
Mars 3 was a Soviet spacecraft that became the first spacecraft to achieve a soft landing on Mars, though it failed shortly after touchdown.
-
B.
Venera 13
Venera 13 was a Soviet space probe that successfully landed on Venus in 1982, transmitting the first color images and extensive data from the planet’s surface.
-
C.
Venera 9
Venera 9 was a Soviet spacecraft that became the first human-made probe to successfully return images from the surface of Venus.
-
D.
Venera 8
Venera 8 was a Soviet space probe that successfully landed on Venus in 1972 and transmitted data from its surface, contributing significantly to early Venus exploration.
-
E.
Venera 6
Venera 6 was a Soviet space probe launched in 1969 to study the atmosphere of Venus during its descent.
- 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: Phobos 2 Target entity description: Phobos 2 was a Soviet space probe launched in 1988 to study Mars and its moon Phobos as part of the Phobos program.
-
A.
Mars 3
Mars 3 was a Soviet spacecraft that became the first spacecraft to achieve a soft landing on Mars, though it failed shortly after touchdown.
-
B.
Venera 13
Venera 13 was a Soviet space probe that successfully landed on Venus in 1982, transmitting the first color images and extensive data from the planet’s surface.
-
C.
Venera 9
Venera 9 was a Soviet spacecraft that became the first human-made probe to successfully return images from the surface of Venus.
-
D.
Venera 8
Venera 8 was a Soviet space probe that successfully landed on Venus in 1972 and transmitted data from its surface, contributing significantly to early Venus exploration.
-
E.
Venera 6
Venera 6 was a Soviet space probe launched in 1969 to study the atmosphere of Venus during its descent.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
interplanetary spacecraft
ⓘ
space probe ⓘ |
| carriedInstrument |
dust detector
ⓘ
gamma-ray spectrometer ⓘ imaging system ⓘ infrared spectrometer ⓘ magnetometer ⓘ plasma instruments ⓘ radiometer ⓘ television camera ⓘ |
| causeOfFailure | onboard computer malfunction ⓘ |
| communicationBand |
S-band
ⓘ
X-band ⓘ |
| communicationLossDate | 1989-03-27 ⓘ |
| countryOfOrigin | Soviet Union ⓘ |
| didNotComplete |
deployment of Phobos landers
ⓘ
planned close approach to Phobos ⓘ |
| enteredMarsOrbit | 1989-01-29 ⓘ |
| launchCountry | Soviet Union ⓘ |
| launchDate | 1988-07-12 ⓘ |
| launchSite | Baikonur Cosmodrome ⓘ |
| launchVehicle |
Proton-K rocket
ⓘ
linked to:
Proton rocket
|
| mass | approximately 6200 kg ⓘ |
| missionObjective |
investigate solar wind interaction with Mars
ⓘ
study the Martian atmosphere ⓘ study the Martian environment ⓘ study the Martian surface ⓘ study the moon Phobos ⓘ |
| missionOutcome | partial success ⓘ |
| missionPhase |
Mars orbit operations
ⓘ
cruise to Mars ⓘ |
| missionType |
Mars orbiter
ⓘ
Phobos flyby mission ⓘ |
| obtainedData |
data on Martian atmosphere
ⓘ
data on solar wind near Mars ⓘ images of Mars ⓘ thermal maps of Mars ⓘ |
| operator | Soviet space program ⓘ |
| plannedLander |
Phobos hopper lander
ⓘ
Phobos stationary lander ⓘ |
| powerSource | solar panels ⓘ |
| predecessor | Phobos 1 ⓘ |
| program |
Phobos program
ⓘ
linked to:
Phobos 2
|
| spaceAgency | Soviet Academy of Sciences ⓘ |
| spacecraftBus | Phobos spacecraft bus ⓘ |
| spacecraftConfiguration | three-axis stabilized ⓘ |
| status | mission ended ⓘ |
| target |
Mars
ⓘ
Phobos ⓘ |
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: Phobos 2 Description of subject: Phobos 2 was a Soviet space probe launched in 1988 to study Mars and its moon Phobos as part of the Phobos program.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.