Orbital elements of USA 57
| Launched | 10 April 1990 |
| Flight ended | – |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 20561 |
| 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 06:46:03 | 89.8394 | 0.00649 | 18.0035 | 312.5047 | 47.0698 | 14.72751 | – |
| 2025 Sep 12 17:57 | 2025 Sep 03 01:14:36 | 89.8404 | 0.00667 | 18.0196 | 356.5415 | 47.0698 | 14.72751 | – |
| 2025 Sep 11 17:57 | 2025 Sep 03 01:14:36 | 89.8404 | 0.00667 | 18.0196 | 356.5415 | 47.0698 | 14.72751 | – |
| 2025 Sep 10 17:56 | 2025 Sep 03 01:14:36 | 89.8404 | 0.00667 | 18.0196 | 356.5415 | 47.0698 | 14.72751 | – |
| 2025 Sep 08 17:57 | 2025 Sep 03 01:14:36 | 89.8404 | 0.00667 | 18.0196 | 356.5415 | 47.0698 | 14.72751 | – |
| 2025 Sep 07 17:56 | 2025 Sep 03 01:14:36 | 89.8404 | 0.00667 | 18.0196 | 356.5415 | 47.0698 | 14.72751 | – |
| 2025 Sep 06 20:41 | 2025 Sep 03 01:14:36 | 89.8404 | 0.00667 | 18.0196 | 356.5415 | 47.0698 | 14.72751 | – |
| 2025 Sep 03 17:57 | 2025 Sep 03 01:14:36 | 89.8404 | 0.00667 | 18.0196 | 356.5415 | 47.0698 | 14.72751 | – |
| 2025 Sep 02 17:56 | 2025 Aug 27 19:13:05 | 89.8407 | 0.00677 | 18.0277 | 18.5731 | 47.0698 | 14.72751 | – |
| 2025 Sep 01 17:56 | 2025 Aug 27 19:13:05 | 89.8407 | 0.00677 | 18.0277 | 18.5731 | 47.0698 | 14.72751 | – |
| 2025 Aug 31 17:56 | 2025 Aug 27 19:13:05 | 89.8407 | 0.00677 | 18.0277 | 18.5731 | 47.0698 | 14.72751 | – |
| 2025 Aug 30 17:56 | 2025 Aug 27 19:13:05 | 89.8407 | 0.00677 | 18.0277 | 18.5731 | 47.0698 | 14.72751 | – |
| 2025 Aug 29 17:56 | 2025 Aug 27 19:13:05 | 89.8407 | 0.00677 | 18.0277 | 18.5731 | 47.0698 | 14.72751 | – |
| 2025 Aug 28 17:57 | 2025 Aug 27 19:13:05 | 89.8407 | 0.00677 | 18.0277 | 18.5731 | 47.0698 | 14.72751 | – |
| 2025 Aug 27 17:56 | 2025 Aug 23 04:19:45 | 89.8413 | 0.00684 | 18.0338 | 34.6635 | 47.0698 | 14.72751 | – |
| 2025 Aug 26 17:56 | 2025 Aug 23 04:19:45 | 89.8413 | 0.00684 | 18.0338 | 34.6635 | 47.0698 | 14.72751 | – |
| 2025 Aug 25 17:56 | 2025 Aug 23 04:19:45 | 89.8413 | 0.00684 | 18.0338 | 34.6635 | 47.0698 | 14.72751 | – |
| 2025 Aug 24 17:56 | 2025 Aug 23 04:19:45 | 89.8413 | 0.00684 | 18.0338 | 34.6635 | 47.0698 | 14.72751 | – |
| 2025 Aug 23 17:56 | 2025 Aug 23 04:19:45 | 89.8413 | 0.00684 | 18.0338 | 34.6635 | 47.0698 | 14.72751 | – |
| 2025 Aug 22 17:56 | 2025 Aug 17 14:36:34 | 89.8418 | 0.00691 | 18.0410 | 53.8697 | 47.0698 | 14.72751 | – |