Spacecraft information: INTELSAT 503
| Launched | 14 December 1981 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | International Telecommunications Satellite Organization (INTELSAT) |
| NORAD ID | 12994 |
| COSPAR ID | 1981-119A |
| Observing |
Current orbital elements
| Inclination | 11.381° |
| Eccentricity | 0.00475 |
| RA ascending node | 21.844 hr |
| Argument perigee | 268.981° |
| Mean anomaly | 283.301° |
| Orbital period | 1447.737 min |
| Epoch of osculation | 20 Mar 2026, 02:50 |
Derived Quantities
| Min Altitude | 35820.0 km |
| Mean Altitude | 36021.3 km |
| Peak Altitude | 36222.5 km |
Launched alongside
ATLAS CENTAUR R/BOrbital History
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