Vanguard SLV-4 Stage 3 - Norad ID: 12
| Spacetrack Directory Name | VANGUARD R/B |
| Alternative name | Vanguard SLV-4 Stage 3 |
| Orbit launches |
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| Deorbitation |
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| Country/organisation of origin | USA (US) |
| Starting point | AFETR (Kennedy Space Center/Cape Canaveral, USA) |
| Perigee | 554 km |
| Apogee | 3326 km |
VANGUARD R/B, 12 is space debris in LEO originally from a launch on Tue, 17 Feb 1959 UTC launched from the Air Force Eastern Test Range (AFETR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.
satellite VANGUARD R/B Date of exalting 17.02.1959y.