Orbital elements of OPS 1920
| Launched | 4 October 1966 | 
| Flight ended | – | 
| Launch site | Air Force Western Test Range, California, USA | 
| Owner | United States | 
| NORAD ID | 2481 | 
| 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 01 15:37:18 | 89.8409 | 0.00330 | 2.1788 | 187.2319 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Nov 02 18:57 | 2025 Oct 27 15:28:42 | 89.8410 | 0.00330 | 2.1807 | 192.1394 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Nov 01 18:58 | 2025 Oct 27 15:28:42 | 89.8410 | 0.00330 | 2.1807 | 192.1394 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 31 18:57 | 2025 Oct 27 15:28:42 | 89.8410 | 0.00330 | 2.1807 | 192.1394 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 30 18:57 | 2025 Oct 27 15:28:42 | 89.8410 | 0.00330 | 2.1807 | 192.1394 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 29 18:57 | 2025 Oct 27 15:28:42 | 89.8410 | 0.00330 | 2.1807 | 192.1394 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 28 18:57 | 2025 Oct 23 16:28:52 | 89.8405 | 0.00329 | 2.1822 | 196.0310 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 27 18:57 | 2025 Oct 23 16:28:52 | 89.8405 | 0.00329 | 2.1822 | 196.0310 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 26 18:57 | 2025 Oct 23 16:28:52 | 89.8405 | 0.00329 | 2.1822 | 196.0310 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 25 17:57 | 2025 Oct 23 16:28:52 | 89.8405 | 0.00329 | 2.1822 | 196.0310 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 24 17:57 | 2025 Oct 23 16:28:52 | 89.8405 | 0.00329 | 2.1822 | 196.0310 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 22 17:56 | 2025 Oct 18 07:57:19 | 89.8404 | 0.00329 | 2.1843 | 201.3135 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 21 17:56 | 2025 Oct 18 07:57:19 | 89.8404 | 0.00329 | 2.1843 | 201.3135 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 20 17:56 | 2025 Oct 18 07:57:19 | 89.8404 | 0.00329 | 2.1843 | 201.3135 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 19 17:56 | 2025 Oct 18 07:57:19 | 89.8404 | 0.00329 | 2.1843 | 201.3135 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 18 17:56 | 2025 Oct 18 07:57:19 | 89.8404 | 0.00329 | 2.1843 | 201.3135 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 17 17:56 | 2025 Oct 07 06:31:19 | 89.8388 | 0.00327 | 2.1885 | 212.3029 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 16 17:56 | 2025 Oct 07 06:31:19 | 89.8388 | 0.00327 | 2.1885 | 212.3029 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 15 17:56 | 2025 Oct 07 06:31:19 | 89.8388 | 0.00327 | 2.1885 | 212.3029 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 14 17:56 | 2025 Oct 07 06:31:19 | 89.8388 | 0.00327 | 2.1885 | 212.3029 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 12 17:56 | 2025 Oct 07 06:31:19 | 89.8388 | 0.00327 | 2.1885 | 212.3029 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 11 17:57 | 2025 Oct 07 06:31:19 | 89.8388 | 0.00327 | 2.1885 | 212.3029 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 09 17:56 | 2025 Oct 07 06:31:19 | 89.8388 | 0.00327 | 2.1885 | 212.3029 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 08 17:56 | 2025 Oct 07 06:31:19 | 89.8388 | 0.00327 | 2.1885 | 212.3029 | 172.8060 | 8.59254 | 4.243 | 
| 2025 Oct 07 17:56 | 2025 Oct 07 06:31:19 | 89.8388 | 0.00327 | 2.1885 | 212.3029 | 172.8060 | 8.59254 | 4.243 |