Statements (29)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:satellite
|
| gptkbp:countryOfOrigin |
gptkb:United_States
|
| gptkbp:diameter |
30 meters (Echo 1)
41 meters (Echo 2) |
| gptkbp:firstSatellite |
gptkb:Echo_1
|
| https://www.w3.org/2000/01/rdf-schema#label |
Project Echo
|
| gptkbp:launchDate |
1960-08-12
|
| gptkbp:launchVehicle |
gptkb:Thor-Delta
|
| gptkbp:material |
gptkb:Mylar
|
| gptkbp:notableAchievement |
enabled first satellite television transmission
enabled first coast-to-coast satellite telephone call |
| gptkbp:notableFor |
first passive communications satellite
visible to naked eye from Earth |
| gptkbp:notableProject |
gptkb:John_R._Pierce
|
| gptkbp:operatedBy |
gptkb:NASA
|
| gptkbp:orbitType |
gptkb:Low_Earth_Orbit
|
| gptkbp:purpose |
communications satellite experiment
|
| gptkbp:relatedTo |
gptkb:Echo_1
gptkb:Echo_2 satellite communications |
| gptkbp:secondSatellite |
gptkb:Echo_2
|
| gptkbp:service |
balloon satellite
|
| gptkbp:shape |
spherical
|
| gptkbp:startYear |
1956
1969 |
| gptkbp:status |
retired
|
| gptkbp:bfsParent |
gptkb:Echo_1A
gptkb:GN-C |
| gptkbp:bfsLayer |
7
|