List of artificial radiation belts
Columns: Explosion | Location | Date | Yield (approximate) | Altitude (km) | Nation of Origin
Hardtack Teak | Johnston Island ( Pacific ) | 1958-08-01 | 3.8 megatons | 76.8 | United States | Hardtack Orange | Johnston Island ( Pacific ) | 1958-08-12 | 3.8 megatons | 43 | United States | Argus I | South Atlantic | 1958-08-27 | 1-2 kilotons | 200 | United States | Argus II | South Atlantic | 1958-08-30 | 1-2 kilotons | 256 | United States | Argus III | South Atlantic | 1958-09-06 | 1-2 kilotons | 539 | United States | Starfish Prime | Johnston Island ( Pacific ) | 1962-07-09 | 1.4 megatons | 400 | United States | K-3 | Kazakhstan | 1962-10-22 | 300 s kiloton | 290 | USSR | K-4 | Kazakhstan | 1962-10-28 | 300 s kiloton | 150 | USSR