Soyuz-U 48-929 Blok-I - Norad ID: 18012
| Spacetrack Directory Name | SL-4 R/B |
| Alternative name | Soyuz-U 48-929 Blok-I |
| Orbit launches |
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| Deorbitation date |
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| Days in orbit | 4 |
| Country/organisation of origin | Commonwealth of Independent States (former USSR) (CIS) |
| Starting point | PLMSC (Plesetsk Missile and Space Complex, Russia) |
| Type | Rocket body |
SL-4 R/B, 18012 was space debris originally from a launch on Tue, 26 May 1987 UTC launched from the Plesetsk Missile And Space Complex (PKMTR). 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.