1989-089A
E1036258
1989-089A is the NASA Cosmic Background Explorer (COBE) satellite, launched in 1989 to measure the cosmic microwave background radiation and provide key evidence for the Big Bang theory.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 1989-089A canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13377742 — 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: 1989-089A Context triple: [Cosmic Background Explorer, nssdcId, 1989-089A]
-
A.
A89
The A89 is a major road in Scotland that connects Edinburgh and Glasgow, passing through various towns and serving as an important regional transport route.
-
B.
A89
A89 is a major French autoroute that runs across central France, linking Bordeaux to Lyon and connecting with several key motorways.
-
C.
A859
The A859 is a main road on the Isle of Lewis in Scotland that links the town of Stornoway with communities to the south.
-
D.
2008-029A
2008-029A is the COSPAR designation for the Fermi Gamma-ray Space Telescope, a NASA observatory dedicated to studying high-energy gamma-ray phenomena in the universe.
-
E.
A-8
A-8 is the station code assigned to Racławicka metro station on the Warsaw Metro system.
- 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: 1989-089A Target entity description: 1989-089A is the NASA Cosmic Background Explorer (COBE) satellite, launched in 1989 to measure the cosmic microwave background radiation and provide key evidence for the Big Bang theory.
-
A.
A89
The A89 is a major road in Scotland that connects Edinburgh and Glasgow, passing through various towns and serving as an important regional transport route.
-
B.
A89
A89 is a major French autoroute that runs across central France, linking Bordeaux to Lyon and connecting with several key motorways.
-
C.
A859
The A859 is a main road on the Isle of Lewis in Scotland that links the town of Stornoway with communities to the south.
-
D.
2008-029A
2008-029A is the COSPAR designation for the Fermi Gamma-ray Space Telescope, a NASA observatory dedicated to studying high-energy gamma-ray phenomena in the universe.
-
E.
A-8
A-8 is the station code assigned to Racławicka metro station on the Warsaw Metro system.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
artificial satellite
ⓘ
astrophysics mission ⓘ scientific research satellite ⓘ spacecraft ⓘ |
| abbreviation |
DIRBE
ⓘ
DMR ⓘ FIRAS ⓘ
linked to:
Cosmic Background Explorer
|
| alsoKnownAs |
COBE
ⓘ
linked to:
Cosmic Background Explorer
Cosmic Background Explorer ⓘ |
| cosparId | 1989-089A ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| dataUsedFor |
constraining dark matter and dark energy models
ⓘ
determining CMB temperature ⓘ studying large-scale structure formation ⓘ |
| deactivationDate | 1993-12-23 ⓘ |
| endOfMission | 1993 ⓘ |
| fieldOfStudy |
astrophysics
ⓘ
cosmic background radiation ⓘ cosmology ⓘ |
| inclination | 99.0 degrees ⓘ |
| instrument |
Differential Microwave Radiometers
ⓘ
Diffuse Infrared Background Experiment ⓘ Far Infrared Absolute Spectrophotometer ⓘ |
| launchCountry |
United States
ⓘ
linked to:
United States of America
|
| launchDate | 1989-11-18 ⓘ |
| launchMass | approximately 2200 kilograms ⓘ |
| launchSite |
Space Launch Complex 2W
ⓘ
linked to:
Space Launch Complex 2
Vandenberg Air Force Base ⓘ
linked to:
Vandenberg Space Force Base
|
| launchVehicle | Delta 5920-8 ⓘ |
| launchYear | 1989 ⓘ |
| missionResult |
constrained cosmological models of the early universe
ⓘ
detected temperature anisotropies in the CMB ⓘ measured the CMB spectrum as a nearly perfect blackbody ⓘ |
| missionType |
cosmic microwave background observation
ⓘ
cosmology ⓘ |
| notableFor |
first detection of CMB anisotropies on large angular scales
ⓘ
first precise measurement of the CMB spectrum ⓘ |
| operator | NASA ⓘ |
| orbitalPeriod | approximately 103 minutes ⓘ |
| orbitType |
low Earth orbit
ⓘ
near-polar orbit ⓘ |
| powerSource | solar panels ⓘ |
| primaryObjective |
map the anisotropies of the cosmic microwave background
ⓘ
measure the cosmic microwave background radiation ⓘ |
| program |
NASA Explorer program
ⓘ
linked to:
NASA Explorer Program
|
| providedEvidenceFor |
Big Bang theory
ⓘ
linked to:
Big Bang
cosmic microwave background anisotropies ⓘ |
| spaceAgency |
NASA Goddard Space Flight Center
ⓘ
linked to:
Goddard Space Flight Center
|
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: 1989-089A Description of subject: 1989-089A is the NASA Cosmic Background Explorer (COBE) satellite, launched in 1989 to measure the cosmic microwave background radiation and provide key evidence for the Big Bang theory.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.