Spacecraft information: THOR AGENA D R/B
| Launched | 23 June 1966 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 2255 |
| COSPAR ID | 1966-056B |
| Observing |
Current orbital elements
| Inclination | 86.968° |
| Eccentricity | 0.00468 |
| RA ascending node | 12.994 hr |
| Argument perigee | 247.184° |
| Mean anomaly | 112.402° |
| Orbital period | 181.187 min |
| Epoch of osculation | 19 Dec 2025, 14:38 |
Derived Quantities
| Min Altitude | 4186.0 km |
| Mean Altitude | 4235.7 km |
| Peak Altitude | 4285.3 km |
Launched alongside
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