Landsat 6
E411748
Landsat 6 was an Earth observation satellite in the Landsat program that failed to reach orbit after its 1993 launch, resulting in the loss of its intended remote-sensing mission.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Landsat 6 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3918674 — 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: Landsat 6 Context triple: [Landsat satellites, hasMember, Landsat 6]
-
A.
Landsat 5
Landsat 5 was a long-lived Earth observation satellite that provided decades of multispectral imagery for environmental monitoring and land-use analysis.
-
B.
Landsat 4
Landsat 4 was an Earth observation satellite in the Landsat program that significantly improved global land imaging with enhanced sensors and higher-resolution data.
-
C.
Terra satellite
Terra is a flagship NASA Earth observation satellite that carries multiple instruments to monitor the planet’s climate, land, oceans, and atmosphere from polar orbit.
-
D.
Landsat 9
Landsat 9 is a NASA and USGS Earth observation satellite that continues the decades-long Landsat program by collecting high-resolution multispectral imagery to monitor and study changes on the planet’s surface.
-
E.
Landsat satellites
Landsat satellites are a series of Earth-observing spacecraft that provide long-term, continuous multispectral imagery used worldwide for environmental monitoring, land-use mapping, and resource management.
- 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: Landsat 6 Target entity description: Landsat 6 was an Earth observation satellite in the Landsat program that failed to reach orbit after its 1993 launch, resulting in the loss of its intended remote-sensing mission.
-
A.
Landsat 5
Landsat 5 was a long-lived Earth observation satellite that provided decades of multispectral imagery for environmental monitoring and land-use analysis.
-
B.
Landsat 4
Landsat 4 was an Earth observation satellite in the Landsat program that significantly improved global land imaging with enhanced sensors and higher-resolution data.
-
C.
Terra satellite
Terra is a flagship NASA Earth observation satellite that carries multiple instruments to monitor the planet’s climate, land, oceans, and atmosphere from polar orbit.
-
D.
Landsat 9
Landsat 9 is a NASA and USGS Earth observation satellite that continues the decades-long Landsat program by collecting high-resolution multispectral imagery to monitor and study changes on the planet’s surface.
-
E.
Landsat satellites
Landsat satellites are a series of Earth-observing spacecraft that provide long-term, continuous multispectral imagery used worldwide for environmental monitoring, land-use mapping, and resource management.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Earth observation satellite
ⓘ
Landsat spacecraft ⓘ artificial satellite ⓘ |
| cosparId | 1993-058A ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| dataCollection | no operational data returned ⓘ |
| failureCause | leak in the liquid fuel system ⓘ |
| failurePhase | launch vehicle second stage ⓘ |
| fundingAgency | United States government ⓘ |
| instrumentAbbreviation | ETM ⓘ |
| intendedOrbit | Sun-synchronous orbit ⓘ |
| intendedOrbitAltitude | 705 km ⓘ |
| intendedOrbitInclination | 98.2 degrees ⓘ |
| intendedUse |
agricultural monitoring
ⓘ
environmental monitoring ⓘ land surface monitoring ⓘ resource management ⓘ |
| launchContractor | Martin Marietta ⓘ |
| launchDate | 1993-10-05 ⓘ |
| launchFailureResult | gap risk in Landsat data continuity ⓘ |
| launchOutcome | launch failure ⓘ |
| launchSite |
Space Launch Complex 4
ⓘ
surface form:
Space Launch Complex 4W
Vandenberg Space Force Base ⓘ
surface form:
Vandenberg Air Force Base
|
| launchVehicle | Titan II ⓘ |
| launchVehicleVariant |
Titan II
ⓘ
surface form:
Titan II G
|
| launchYear | 1993 ⓘ |
| manufacturer | Martin Marietta ⓘ |
| massAtLaunch | approximately 2,100 kilograms ⓘ |
| missionType |
Earth observation
ⓘ
remote sensing ⓘ |
| nssdcId | 1993-058A ⓘ |
| operator |
NASA
ⓘ
surface form:
National Aeronautics and Space Administration
National Oceanic and Atmospheric Administration ⓘ United States Geological Survey ⓘ |
| orbitInsertion | failed ⓘ |
| orbitPeriodIntended | about 99 minutes ⓘ |
| partOf |
Landsat satellites
ⓘ
surface form:
Landsat program
|
| plannedMissionDuration | 5 years ⓘ |
| powerSource | solar panels ⓘ |
| primaryInstrument |
Landsat 4-5 TM
ⓘ
surface form:
Enhanced Thematic Mapper
|
| program | United States civilian Earth observation program ⓘ |
| programPredecessor | Landsat 5 ⓘ |
| programRole | to continue Landsat data continuity after Landsat 5 ⓘ |
| programSuccessor | Landsat 7 ⓘ |
| spectralInstrumentType | multispectral scanner ⓘ |
| status |
lost in launch failure
ⓘ
mission failed ⓘ |
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: Landsat 6 Description of subject: Landsat 6 was an Earth observation satellite in the Landsat program that failed to reach orbit after its 1993 launch, resulting in the loss of its intended remote-sensing mission.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.