1958 Beta 2
E87463
1958 Beta 2 is the alternative designation for Vanguard 1, one of the earliest American satellites and the oldest human-made object still in Earth orbit.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 1958 Beta 2 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T743029 — 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: 1958 Beta 2 Context triple: [Vanguard 1, alsoKnownAs, 1958 Beta 2]
-
A.
Alfa Pendular
Alfa Pendular is Portugal’s high-speed tilting train service operated by Comboios de Portugal, connecting major cities such as Lisbon, Porto, and Faro with faster, more comfortable rail travel.
-
B.
Red Duster
The Red Duster is the traditional British civil ensign, a red flag with the Union Jack in the canton historically flown by British merchant ships.
-
C.
The Diesel
The Diesel is the nickname of Pro Football Hall of Fame running back John Riggins, renowned for his powerful, hard-charging rushing style with the Washington Redskins.
-
D.
BB-38
BB-38 is the hull number of USS Pennsylvania, a Pennsylvania-class battleship of the United States Navy that served prominently during both World Wars.
-
E.
190E
The Mercedes-Benz 190E is a compact executive sedan from the 1980s and early 1990s, renowned for its advanced engineering, build quality, and motorsport-bred performance variants like the 190E 2.3-16 and 2.5-16.
- 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: 1958 Beta 2 Target entity description: 1958 Beta 2 is the alternative designation for Vanguard 1, one of the earliest American satellites and the oldest human-made object still in Earth orbit.
-
A.
Alfa Pendular
Alfa Pendular is Portugal’s high-speed tilting train service operated by Comboios de Portugal, connecting major cities such as Lisbon, Porto, and Faro with faster, more comfortable rail travel.
-
B.
Red Duster
The Red Duster is the traditional British civil ensign, a red flag with the Union Jack in the canton historically flown by British merchant ships.
-
C.
The Diesel
The Diesel is the nickname of Pro Football Hall of Fame running back John Riggins, renowned for his powerful, hard-charging rushing style with the Washington Redskins.
-
D.
BB-38
BB-38 is the hull number of USS Pennsylvania, a Pennsylvania-class battleship of the United States Navy that served prominently during both World Wars.
-
E.
190E
The Mercedes-Benz 190E is a compact executive sedan from the 1980s and early 1990s, renowned for its advanced engineering, build quality, and motorsport-bred performance variants like the 190E 2.3-16 and 2.5-16.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Earth satellite
ⓘ
artificial satellite ⓘ spacecraft ⓘ |
| alternativeName |
Vanguard 1 satellite
ⓘ
surface form:
Vanguard 1
|
| apogee | about 3969 kilometers ⓘ |
| carriedInstrument |
micrometeorite detector
ⓘ
radio transmitter ⓘ temperature sensor ⓘ |
| category |
1958 in spaceflight
ⓘ
Vanguard 1 satellite ⓘ
surface form:
Vanguard satellites
|
| communication | telemetry ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| designLife | a few months ⓘ |
| diameter | 16.5 centimeters ⓘ |
| followedBy | Vanguard 2 ⓘ |
| hasCOSPARID | 1958-002B ⓘ |
| hasNSSDCID | 1958-002B ⓘ |
| inclination | about 34.25 degrees ⓘ |
| launchComplex | LC-18A ⓘ |
| launchDate | 1958-03-17 ⓘ |
| launchSite |
Cape Canaveral
ⓘ
Cape Canaveral Space Force Station ⓘ
surface form:
Cape Canaveral Air Force Station
|
| launchVehicle | Vanguard TV-4 ⓘ |
| manufacturer | Naval Research Laboratory ⓘ |
| mass | 1.47 kilograms ⓘ |
| missionType |
geophysics
ⓘ
ionospheric research ⓘ |
| notableFor | oldest human-made object still in Earth orbit ⓘ |
| operator | United States Navy ⓘ |
| orbitalPeriod | about 134 minutes ⓘ |
| orbitType | low Earth orbit ⓘ |
| perigee | about 654 kilometers ⓘ |
| powerSource |
chemical batteries
ⓘ
solar cells ⓘ |
| precededBy |
Explorer 1
ⓘ
Sputnik 1 ⓘ Sputnik 2 ⓘ |
| program | Vanguard program ⓘ |
| purpose | scientific research ⓘ |
| radioFrequency |
108.00 MHz
ⓘ
108.03 MHz ⓘ |
| shape | sphere ⓘ |
| status | in orbit ⓘ |
| transmissionsEnded | 1964 ⓘ |
| usedFor |
studying atmospheric drag
ⓘ
studying density of the upper atmosphere ⓘ tracking Earth’s shape ⓘ |
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: 1958 Beta 2 Description of subject: 1958 Beta 2 is the alternative designation for Vanguard 1, one of the earliest American satellites and the oldest human-made object still in Earth orbit.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Vanguard 1