NORAD Catalog
| NORAD ID | 4 |
| COSPAR ID | 1958-001A |
| Name | EXPLORER 1 |
| Source | US |
| Period | 88.50 |
| Inclination (deg) | 33.10 |
| Apogee (km) | 215 |
| Perigee (km) | 183 |
| Eccentric | 0.00 |
| Radar Cross Section | |
| Size | |
| A/M | |
| Orbit Memo | |
| Launch Time | 1958-02-01 |
| Deacy Time | 1970-03-31 |
| Is Active Satellite | |
| Decay? |
|
| Debris? | |
| Rocket? | |
| GoogleEarthLink | NULL |
| Semimajor Axis History | NULL |