Explorer 49
E1033000
Explorer program spacecraft
NASA spacecraft
artificial satellite
lunar orbiter
radio astronomy satellite
Explorer 49 was a NASA lunar-orbiting radio astronomy satellite launched in 1973 to study low-frequency radio emissions from space.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Explorer 38 | 1 |
| Explorer 49 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13288265 — 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: Explorer 49 Context triple: [NASA Explorer Program, notableMission, Explorer 49]
-
A.
Explorer 71
Explorer 71 is a NASA Explorer-series scientific satellite better known as the Advanced Composition Explorer (ACE), designed to study energetic particles from the Sun, the interplanetary medium, and galactic sources.
-
B.
Mariner
The Mariner is the nautical-themed mascot representing the athletic teams of the College of Coastal Georgia.
-
C.
The Explorer
The Explorer is the adventurous mascot representing La Salle University's spirit of discovery and exploration.
-
D.
the Explorer
The Explorer is the central outsider protagonist in Franz Kafka's short story "In the Penal Colony," whose observations and moral unease frame the narrative's critique of a brutal execution device and the justice system that employs it.
-
E.
Magellan spacecraft
The Magellan spacecraft was a NASA robotic probe launched in 1989 that used radar mapping to produce the first detailed global images of the surface of Venus.
- 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: Explorer 49 Target entity description: Explorer 49 was a NASA lunar-orbiting radio astronomy satellite launched in 1973 to study low-frequency radio emissions from space.
-
A.
Explorer 71
Explorer 71 is a NASA Explorer-series scientific satellite better known as the Advanced Composition Explorer (ACE), designed to study energetic particles from the Sun, the interplanetary medium, and galactic sources.
-
B.
Mariner
The Mariner is the nautical-themed mascot representing the athletic teams of the College of Coastal Georgia.
-
C.
The Explorer
The Explorer is the adventurous mascot representing La Salle University's spirit of discovery and exploration.
-
D.
the Explorer
The Explorer is the central outsider protagonist in Franz Kafka's short story "In the Penal Colony," whose observations and moral unease frame the narrative's critique of a brutal execution device and the justice system that employs it.
-
E.
Magellan spacecraft
The Magellan spacecraft was a NASA robotic probe launched in 1989 that used radar mapping to produce the first detailed global images of the surface of Venus.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Explorer program spacecraft
ⓘ
NASA spacecraft ⓘ artificial satellite ⓘ lunar orbiter ⓘ radio astronomy satellite ⓘ |
| alsoKnownAs | RAE-B ⓘ |
| antennaConfiguration | three orthogonal dipole antennas ⓘ |
| antennaType | long dipole antennas ⓘ |
| boomLength | about 230 meters ⓘ |
| countryOfOperator |
United States
ⓘ
linked to:
United States of America
|
| dataTransmission | radio telemetry ⓘ |
| destination | Moon ⓘ |
| discovererOrMaker |
NASA Goddard Space Flight Center
ⓘ
linked to:
Goddard Space Flight Center
|
| frequencyBandLowerLimit | about 25 kHz ⓘ |
| frequencyBandUpperLimit | about 13 MHz ⓘ |
| frequencyRangeObserved |
low frequency radio waves
ⓘ
very low frequency radio waves ⓘ |
| fullName | Radio Astronomy Explorer-B ⓘ |
| launchComplex | Launch Complex 17B ⓘ |
| launchDate | 1973-06-10 ⓘ |
| launchRocketFamily | Delta rocket ⓘ |
| launchSite |
Cape Canaveral
ⓘ
Cape Canaveral Air Force Station ⓘ
linked to:
Cape Canaveral Space Force Station
|
| launchVehicle | Delta 1913 ⓘ |
| launchYear | 1973 ⓘ |
| massAtLaunch | approximately 330 kilograms ⓘ |
| missionEnd | late 1970s ⓘ |
| missionStart | 1973 ⓘ |
| missionType |
lunar orbiter
ⓘ
radio astronomy ⓘ |
| notableFeature |
carried very long deployable antennas for low-frequency observations
ⓘ
operated on the far side of the Moon for reduced terrestrial radio interference ⓘ |
| operator | NASA ⓘ |
| orbitType | lunar orbit ⓘ |
| powerSource |
rechargeable batteries
ⓘ
solar panels ⓘ |
| predecessor |
Explorer 38
ⓘ
linked to:
Explorer 49
|
| primaryBodyOrbited | Moon ⓘ |
| program |
Explorer program
ⓘ
linked to:
NASA Explorer Program
|
| purpose |
investigate planetary and cosmic radio sources
ⓘ
map low-frequency radio emissions from the Milky Way ⓘ measure solar radio emissions at low frequencies ⓘ study low-frequency radio emissions from space ⓘ |
| scientificDiscipline |
radio astronomy
ⓘ
space physics ⓘ |
| spaceAgency | NASA ⓘ |
| spacecraftBus | Explorer 38 / RAE-B derived bus ⓘ |
| status | mission completed ⓘ |
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: Explorer 49 Description of subject: Explorer 49 was a NASA lunar-orbiting radio astronomy satellite launched in 1973 to study low-frequency radio emissions from space.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Explorer 49