Spacecraft information: ECHO 2 DEB
| Launched | 24 January 1964 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 742 |
| COSPAR ID | 1964-004C |
| Alternative names |
METAL OBJ |
| Observing |
Current orbital elements
| Inclination | 81.466° |
| Eccentricity | 0.01709 |
| RA ascending node | 13.901 hr |
| Argument perigee | 223.584° |
| Mean anomaly | 135.167° |
| Orbital period | 108.576 min |
| Epoch of osculation | 12 Dec 2025, 02:55 |
Derived Quantities
| Min Altitude | 1039.2 km |
| Mean Altitude | 1168.0 km |
| Peak Altitude | 1296.9 km |
Orbital History
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