Orbital elements of REX 1
| Launched | 28 June 1991 | 
| Flight ended | – | 
| Launch site | Air Force Western Test Range, California, USA | 
| Owner | United States | 
| NORAD ID | 21527 | 
| Date fetched  | 
                    Epoch osculation  | 
                    Inc. [°]  | 
                    Ecc. | RA asc node [hr]  | 
                    Arg Peri. [°]  | 
                    Mean anom [°]  | 
                    Mean motion [rev/day]  | 
                    Abs. mag  | 
                
| Date fetched  | 
                    Epoch osculation  | 
                    Inc. [°]  | 
                    Ecc. | RA asc node [hr]  | 
                    Arg Peri. [°]  | 
                    Mean anom [°]  | 
                    Mean motion [rev/day]  | 
                    Abs. mag  | 
                
| 2025 Nov 03 18:57 | 2025 Nov 02 11:14:06 | 89.5244 | 0.00688 | 18.1580 | 8.4038 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Nov 02 18:57 | 2025 Oct 29 11:04:28 | 89.5239 | 0.00694 | 18.1725 | 21.3819 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Nov 01 18:58 | 2025 Oct 29 11:04:28 | 89.5239 | 0.00694 | 18.1725 | 21.3819 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 31 18:57 | 2025 Oct 29 11:04:28 | 89.5239 | 0.00694 | 18.1725 | 21.3819 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 30 18:57 | 2025 Oct 29 11:04:28 | 89.5239 | 0.00694 | 18.1725 | 21.3819 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 29 18:57 | 2025 Oct 29 11:04:28 | 89.5239 | 0.00694 | 18.1725 | 21.3819 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 28 18:57 | 2025 Oct 23 23:29:10 | 89.5230 | 0.00700 | 18.1924 | 38.9958 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 27 18:57 | 2025 Oct 23 23:29:10 | 89.5230 | 0.00700 | 18.1924 | 38.9958 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 26 18:57 | 2025 Oct 23 23:29:10 | 89.5230 | 0.00700 | 18.1924 | 38.9958 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 25 17:57 | 2025 Oct 23 23:29:10 | 89.5230 | 0.00700 | 18.1924 | 38.9958 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 24 17:57 | 2025 Oct 23 23:29:10 | 89.5230 | 0.00700 | 18.1924 | 38.9958 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 22 17:56 | 2025 Oct 18 05:08:56 | 89.5224 | 0.00705 | 18.2133 | 57.3609 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 21 17:56 | 2025 Oct 18 05:08:56 | 89.5224 | 0.00705 | 18.2133 | 57.3609 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 20 17:56 | 2025 Oct 18 05:08:56 | 89.5224 | 0.00705 | 18.2133 | 57.3609 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 19 17:56 | 2025 Oct 18 05:08:56 | 89.5224 | 0.00705 | 18.2133 | 57.3609 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 18 17:56 | 2025 Oct 18 05:08:56 | 89.5224 | 0.00705 | 18.2133 | 57.3609 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 17 17:56 | 2025 Oct 07 11:01:50 | 89.5215 | 0.00709 | 18.2524 | 91.4036 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 16 17:56 | 2025 Oct 07 11:01:50 | 89.5215 | 0.00709 | 18.2524 | 91.4036 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 15 17:56 | 2025 Oct 07 11:01:50 | 89.5215 | 0.00709 | 18.2524 | 91.4036 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 14 17:56 | 2025 Oct 07 11:01:50 | 89.5215 | 0.00709 | 18.2524 | 91.4036 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 12 17:56 | 2025 Oct 07 11:01:50 | 89.5215 | 0.00709 | 18.2524 | 91.4036 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 11 17:57 | 2025 Oct 07 11:01:50 | 89.5215 | 0.00709 | 18.2524 | 91.4036 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 09 17:56 | 2025 Oct 07 11:01:50 | 89.5215 | 0.00709 | 18.2524 | 91.4036 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 08 17:56 | 2025 Oct 07 11:01:50 | 89.5215 | 0.00709 | 18.2524 | 91.4036 | 351.8289 | 14.23517 | 10.243 | 
| 2025 Oct 07 17:56 | 2025 Oct 07 11:01:50 | 89.5215 | 0.00709 | 18.2524 | 91.4036 | 351.8289 | 14.23517 | 10.243 |