Spacecraft information: EXPLORER 27
| Launched | 28 April 1965 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Wallops Island, Virginia, USA |
| Owner | United States |
| NORAD ID | 1328 |
| COSPAR ID | 1965-032A |
| Observing |
Current orbital elements
| Inclination | 41.186° |
| Eccentricity | 0.02432 |
| RA ascending node | 20.416 hr |
| Argument perigee | 237.344° |
| Mean anomaly | 120.364° |
| Orbital period | 107.550 min |
| Epoch of osculation | 16 Jan 2026, 12:25 |
Derived Quantities
| Min Altitude | 938.3 km |
| Mean Altitude | 1120.5 km |
| Peak Altitude | 1302.6 km |
Orbital History
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