Mars 7
E1009020
Mars 7 was a Soviet spacecraft from the 1970s Mars program intended to deliver a lander to the Martian surface, though it ultimately failed to achieve a successful landing.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mars 7 canonical | 2 |
| Mars 7 (4MV-4 No.53) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12639371 — 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: Mars 7 Context triple: [Mars 3, relatedMission, Mars 7]
-
A.
Mars 6
Mars 6 was a Soviet spacecraft from the 1970s Mars program designed to deliver a lander to the Martian surface for atmospheric and surface studies.
-
B.
Mars 5
Mars 5 was a Soviet spacecraft from the 1970s Mars program that successfully entered Martian orbit and transmitted data about the planet’s atmosphere and surface.
-
C.
Mars 4
Mars 4 was a Soviet Mars orbiter mission launched in 1973 as part of the Mars program, intended to study the Martian atmosphere and surface.
-
D.
Mars 2
Mars 2 was a Soviet space probe launched in 1971 as part of the Mars program, notable for being the first human-made object to reach the surface of Mars, though its lander crashed.
-
E.
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.
- 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: Mars 7 Target entity description: Mars 7 was a Soviet spacecraft from the 1970s Mars program intended to deliver a lander to the Martian surface, though it ultimately failed to achieve a successful landing.
-
A.
Mars 6
Mars 6 was a Soviet spacecraft from the 1970s Mars program designed to deliver a lander to the Martian surface for atmospheric and surface studies.
-
B.
Mars 5
Mars 5 was a Soviet spacecraft from the 1970s Mars program that successfully entered Martian orbit and transmitted data about the planet’s atmosphere and surface.
-
C.
Mars 4
Mars 4 was a Soviet Mars orbiter mission launched in 1973 as part of the Mars program, intended to study the Martian atmosphere and surface.
-
D.
Mars 2
Mars 2 was a Soviet space probe launched in 1971 as part of the Mars program, notable for being the first human-made object to reach the surface of Mars, though its lander crashed.
-
E.
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.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
Mars probe
ⓘ
Soviet spacecraft ⓘ interplanetary spacecraft ⓘ uncrewed spacecraft ⓘ |
| actualOutcome |
lander entered heliocentric orbit
ⓘ
lander missed Mars ⓘ |
| alternateName |
Mars 7 (4MV-4 No.53)
ⓘ
linked to:
Mars 7
|
| approachDate | 1974-03-09 ⓘ |
| closestApproachToMars | about 1300 kilometers from Martian surface ⓘ |
| communicationBand | radio communications ⓘ |
| component |
descent module
ⓘ
orbiter bus ⓘ |
| COSPARId | 1973-053A ⓘ |
| countryOfOrigin | Soviet Union ⓘ |
| failureCause |
malfunction in onboard control system
ⓘ
premature separation of lander from bus ⓘ |
| intendedOutcome |
conduct scientific observations of Mars
ⓘ
deliver lander to Martian surface ⓘ |
| landerDesign | similar to Mars 6 lander ⓘ |
| languageOfInscription | Russian ⓘ |
| launchDate | 1973-08-09 ⓘ |
| launchSite |
Baikonur Cosmodrome
ⓘ
Baikonur Cosmodrome Site 81 ⓘ
linked to:
Baikonur Cosmodrome
|
| launchVehicle |
Blok D upper stage
ⓘ
Proton-K rocket ⓘ
linked to:
Proton rocket
|
| manufacturer |
Lavochkin Design Bureau
ⓘ
linked to:
Lavochkin design bureau
|
| mass | approximately 3260 kilograms ⓘ |
| missionDuration | interplanetary cruise from 1973 to 1974 ⓘ |
| missionObjective |
study Martian atmosphere
ⓘ
study Martian surface ⓘ test landing technologies for Mars ⓘ |
| missionResult | partial failure ⓘ |
| missionType |
Mars lander and flyby mission
ⓘ
planetary exploration mission ⓘ |
| NORADId | 06779 ⓘ |
| operatedBy | Soviet Academy of Sciences ⓘ |
| orbitType | heliocentric orbit after Mars flyby ⓘ |
| powerSource |
chemical batteries
ⓘ
solar panels ⓘ |
| programEra | 1970s ⓘ |
| programSequence |
follows Mars 6
ⓘ
precedes Mars 96 (later Russian Mars mission, not direct series) ⓘ |
| propulsion | chemical propulsion system ⓘ |
| scientificInstruments |
imaging system
ⓘ
plasma and particle detectors ⓘ radiometers ⓘ spectrometers ⓘ |
| spaceAgency | Soviet space program ⓘ |
| spacecraftBus | 4MV spacecraft bus ⓘ |
| spaceProgram | Soviet Mars program ⓘ |
| targetBody | Mars ⓘ |
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: Mars 7 Description of subject: Mars 7 was a Soviet spacecraft from the 1970s Mars program intended to deliver a lander to the Martian surface, though it ultimately failed to achieve a successful landing.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mars 7