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1γ = 10-5 oersted = Dynamic range of instrumentation
| Satellite | Launch Date | Inclination of Orbital Plane to Earth's equator | Lifetime (days) | Range (γ) | Sensitivity | Distance RE |
|---|---|---|---|---|---|---|
| Sputnik III | 5-15-58 | 65° | 30 | <60,000 | 5% | <1.3 |
| Pioneer I | 10-11-58 | Earth impact | 1 | <1000 | 1% | 3.7-7.0 |
| Lunik I | 1-2-59 | Solar orbit | 1 | <6,000 | 200γ | 3-6 |
| Explorer VI | 8-7-59 | 47° | 61 | <20,000 | 3% | 2-7.5 |
| Lunik II | 9-12-59 | Lunar impact | 1.4 | <1,500 | 50γ | 3-6 |
| Vanguard III | 9-18-59 | 33 | 85 | 10,000-60,000 | 4γ | <1.8 |
| Pioneer V | 3-11-60 | Solar orbit | 50 | <1,000 | 0.05-5γ | 5-9 |
| Explorer X | 3-25-61 | 33 | 2.2 | 30-5,000 | 3γ | 1.8-7 |
| Explorer XII | 8-16-61 | 33 | 112 | ±500 | 10γ | 4-13.5 |
| Alouette | 9-29-62 | 80 | Still operating | 60,000 | 0.3% | 1.17 |
| Explorer XIV | 10-3-62 | 33 | 300 | ±250 | 5γ | 5-16.5 |
INCOMPLETE
