| Operational Status | Descriptions |
|---|---|
| + | Operational |
| - | Nonoperational |
| P | Partially Operational Partially fulfilling primary mission or secondary mission(s) |
| B | Backup/Standby Previously operational satellite put into reserve status |
| S | Spare New satellite awaiting full activation |
| X | Extended Mission |
| D | Decayed |
| ? | Unknown |
| *Active is any satellite with an operational status of +, P, B, S, or X. Active status does not require power or communications (e.g., geodetic satellites) | |
Just some of the resources CelesTrak uses to keep our ops status up to date.