Orbital elements of USA 31
| Launched | 1 September 1988 |
| Flight ended | – |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 19458 |
| 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 Jun 30 17:56 | 2025 Jun 28 09:29:20 | 27.1771 | 0.72951 | 7.3716 | 15.4880 | 358.1464 | 2.00907 | – |
| 2025 Jun 29 17:56 | 2025 Jun 28 09:29:20 | 27.1771 | 0.72951 | 7.3716 | 15.4880 | 358.1464 | 2.00907 | – |
| 2025 Jun 28 17:56 | 2025 Jun 28 09:29:20 | 27.1771 | 0.72951 | 7.3716 | 15.4880 | 358.1464 | 2.00907 | – |
| 2025 Jun 27 17:56 | 2025 Jun 22 10:08:47 | 27.1599 | 0.72963 | 7.4829 | 12.7128 | 358.1464 | 2.00907 | – |
| 2025 Jun 26 17:56 | 2025 Jun 22 10:08:47 | 27.1599 | 0.72963 | 7.4829 | 12.7128 | 358.1464 | 2.00907 | – |
| 2025 Jun 25 17:56 | 2025 Jun 22 10:08:47 | 27.1599 | 0.72963 | 7.4829 | 12.7128 | 358.1464 | 2.00907 | – |
| 2025 Jun 24 17:56 | 2025 Jun 22 10:08:47 | 27.1599 | 0.72963 | 7.4829 | 12.7128 | 358.1464 | 2.00907 | – |
| 2025 Jun 23 17:56 | 2025 Jun 22 10:08:47 | 27.1599 | 0.72963 | 7.4829 | 12.7128 | 358.1464 | 2.00907 | – |
| 2025 Jun 22 17:56 | 2025 Jun 16 10:48:23 | 27.1399 | 0.72979 | 7.5940 | 9.9362 | 358.1464 | 2.00907 | – |
| 2025 Jun 21 17:56 | 2025 Jun 16 10:48:23 | 27.1399 | 0.72979 | 7.5940 | 9.9362 | 358.1464 | 2.00907 | – |
| 2025 Jun 20 17:57 | 2025 Jun 16 10:48:23 | 27.1399 | 0.72979 | 7.5940 | 9.9362 | 358.1464 | 2.00907 | – |
| 2025 Jun 19 17:56 | 2025 Jun 16 10:48:23 | 27.1399 | 0.72979 | 7.5940 | 9.9362 | 358.1464 | 2.00907 | – |
| 2025 Jun 18 17:56 | 2025 Jun 16 10:48:23 | 27.1399 | 0.72979 | 7.5940 | 9.9362 | 358.1464 | 2.00907 | – |
| 2025 Jun 17 17:56 | 2025 Jun 16 10:48:23 | 27.1399 | 0.72979 | 7.5940 | 9.9362 | 358.1464 | 2.00907 | – |
| 2025 Jun 16 17:56 | 2025 Jun 11 11:21:14 | 27.1225 | 0.72993 | 7.6868 | 7.6218 | 358.1464 | 2.00907 | – |
| 2025 Jun 15 17:56 | 2025 Jun 11 11:21:14 | 27.1225 | 0.72993 | 7.6868 | 7.6218 | 358.1464 | 2.00907 | – |
| 2025 Jun 14 17:56 | 2025 Jun 11 11:21:14 | 27.1225 | 0.72993 | 7.6868 | 7.6218 | 358.1464 | 2.00907 | – |
| 2025 Jun 13 17:56 | 2025 Jun 11 11:21:14 | 27.1225 | 0.72993 | 7.6868 | 7.6218 | 358.1464 | 2.00907 | – |
| 2025 Jun 12 17:56 | 2025 Jun 11 11:21:14 | 27.1225 | 0.72993 | 7.6868 | 7.6218 | 358.1464 | 2.00907 | – |
| 2025 Jun 11 17:56 | 2025 Jun 05 12:00:54 | 27.1009 | 0.73008 | 7.7978 | 4.8484 | 358.1464 | 2.00907 | – |
| 2025 Jun 10 17:56 | 2025 Jun 05 12:00:54 | 27.1009 | 0.73008 | 7.7978 | 4.8484 | 358.1464 | 2.00907 | – |
| 2025 Jun 09 17:56 | 2025 Jun 05 12:00:54 | 27.1009 | 0.73008 | 7.7978 | 4.8484 | 358.1464 | 2.00907 | – |
| 2025 Jun 08 17:56 | 2025 Jun 05 12:00:54 | 27.1009 | 0.73008 | 7.7978 | 4.8484 | 358.1464 | 2.00907 | – |
| 2025 Jun 07 17:56 | 2025 Jun 05 12:00:54 | 27.1009 | 0.73008 | 7.7978 | 4.8484 | 358.1464 | 2.00907 | – |
| 2025 Jun 06 17:56 | 2025 Jun 05 12:00:54 | 27.1009 | 0.73008 | 7.7978 | 4.8484 | 358.1464 | 2.00907 | – |
| 2025 Jun 05 17:56 | 2025 Jun 01 00:30:32 | 27.0846 | 0.73019 | 7.8811 | 2.7666 | 358.1464 | 2.00907 | – |
| 2025 Jun 04 17:57 | 2025 Jun 01 00:30:32 | 27.0846 | 0.73019 | 7.8811 | 2.7666 | 358.1464 | 2.00907 | – |
| 2025 Jun 03 17:57 | 2025 Jun 01 00:30:32 | 27.0846 | 0.73019 | 7.8811 | 2.7666 | 358.1464 | 2.00907 | – |