Orbital elements of USA 56
| Launched | 10 April 1990 |
| Flight ended | – |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 20560 |
| 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 Sep 15 17:56 | 2025 Sep 15 06:55:28 | 89.8478 | 0.00624 | 17.7331 | 165.6041 | 194.6978 | 14.76944 | – |
| 2025 Sep 12 17:57 | 2025 Sep 03 00:36:06 | 89.8482 | 0.00604 | 17.7486 | 209.5858 | 194.6978 | 14.76944 | – |
| 2025 Sep 11 17:57 | 2025 Sep 03 00:36:06 | 89.8482 | 0.00604 | 17.7486 | 209.5858 | 194.6978 | 14.76944 | – |
| 2025 Sep 10 17:56 | 2025 Sep 03 00:36:06 | 89.8482 | 0.00604 | 17.7486 | 209.5858 | 194.6978 | 14.76944 | – |
| 2025 Sep 08 17:57 | 2025 Sep 03 00:36:06 | 89.8482 | 0.00604 | 17.7486 | 209.5858 | 194.6978 | 14.76944 | – |
| 2025 Sep 07 17:56 | 2025 Sep 03 00:36:06 | 89.8482 | 0.00604 | 17.7486 | 209.5858 | 194.6978 | 14.76944 | – |
| 2025 Sep 06 20:41 | 2025 Sep 03 00:36:06 | 89.8482 | 0.00604 | 17.7486 | 209.5858 | 194.6978 | 14.76944 | – |
| 2025 Sep 03 17:57 | 2025 Sep 03 00:36:06 | 89.8482 | 0.00604 | 17.7486 | 209.5858 | 194.6978 | 14.76944 | – |
| 2025 Sep 02 17:56 | 2025 Aug 27 20:37:32 | 89.8485 | 0.00597 | 17.7563 | 232.1612 | 194.6978 | 14.76944 | – |
| 2025 Sep 01 17:56 | 2025 Aug 27 20:37:32 | 89.8485 | 0.00597 | 17.7563 | 232.1612 | 194.6978 | 14.76944 | – |
| 2025 Aug 31 17:56 | 2025 Aug 27 20:37:32 | 89.8485 | 0.00597 | 17.7563 | 232.1612 | 194.6978 | 14.76944 | – |
| 2025 Aug 30 17:56 | 2025 Aug 27 20:37:32 | 89.8485 | 0.00597 | 17.7563 | 232.1612 | 194.6978 | 14.76944 | – |
| 2025 Aug 29 17:56 | 2025 Aug 27 20:37:32 | 89.8485 | 0.00597 | 17.7563 | 232.1612 | 194.6978 | 14.76944 | – |
| 2025 Aug 28 17:57 | 2025 Aug 27 20:37:32 | 89.8485 | 0.00597 | 17.7563 | 232.1612 | 194.6978 | 14.76944 | – |
| 2025 Aug 27 17:56 | 2025 Aug 22 12:09:42 | 89.8490 | 0.00593 | 17.7630 | 251.9760 | 194.6978 | 14.76944 | – |
| 2025 Aug 26 17:56 | 2025 Aug 22 12:09:42 | 89.8490 | 0.00593 | 17.7630 | 251.9760 | 194.6978 | 14.76944 | – |
| 2025 Aug 25 17:56 | 2025 Aug 22 12:09:42 | 89.8490 | 0.00593 | 17.7630 | 251.9760 | 194.6978 | 14.76944 | – |
| 2025 Aug 24 17:56 | 2025 Aug 22 12:09:42 | 89.8490 | 0.00593 | 17.7630 | 251.9760 | 194.6978 | 14.76944 | – |
| 2025 Aug 23 17:56 | 2025 Aug 22 12:09:42 | 89.8490 | 0.00593 | 17.7630 | 251.9760 | 194.6978 | 14.76944 | – |
| 2025 Aug 22 17:56 | 2025 Aug 17 19:57:33 | 89.8495 | 0.00591 | 17.7688 | 269.3630 | 194.6978 | 14.76944 | – |