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 Jan 01 18:53 | 2024 Dec 22 05:13:20 | 26.4023 | 0.73549 | 11.0007 | 285.7088 | 9.9849 | 2.00720 | – |
| 2024 Dec 31 18:53 | 2024 Dec 22 05:13:20 | 26.4023 | 0.73549 | 11.0007 | 285.7088 | 9.9849 | 2.00720 | – |
| 2024 Dec 30 18:53 | 2024 Dec 22 05:13:20 | 26.4023 | 0.73549 | 11.0007 | 285.7088 | 9.9849 | 2.00720 | – |
| 2024 Dec 29 20:34 | 2024 Dec 22 05:13:20 | 26.4023 | 0.73549 | 11.0007 | 285.7088 | 9.9849 | 2.00720 | – |
| 2024 Dec 28 18:53 | 2024 Dec 22 05:13:20 | 26.4023 | 0.73549 | 11.0007 | 285.7088 | 9.9849 | 2.00720 | – |
| 2024 Dec 27 18:53 | 2024 Dec 22 05:13:20 | 26.4023 | 0.73549 | 11.0007 | 285.7088 | 9.9849 | 2.00720 | – |
| 2024 Dec 26 18:53 | 2024 Dec 14 17:53:22 | 26.3875 | 0.73558 | 11.1519 | 281.9934 | 9.9849 | 2.00720 | – |
| 2024 Dec 25 18:53 | 2024 Dec 14 17:53:22 | 26.3875 | 0.73558 | 11.1519 | 281.9934 | 9.9849 | 2.00720 | – |
| 2024 Dec 24 18:53 | 2024 Dec 14 17:53:22 | 26.3875 | 0.73558 | 11.1519 | 281.9934 | 9.9849 | 2.00720 | – |
| 2024 Dec 23 19:54 | 2024 Dec 14 17:53:22 | 26.3875 | 0.73558 | 11.1519 | 281.9934 | 9.9849 | 2.00720 | – |
| 2024 Dec 22 18:53 | 2024 Dec 14 17:53:22 | 26.3875 | 0.73558 | 11.1519 | 281.9934 | 9.9849 | 2.00720 | – |
| 2024 Dec 14 18:53 | 2024 Dec 04 18:46:02 | 26.3681 | 0.73559 | 11.3543 | 277.0306 | 9.9849 | 2.00720 | – |
| 2024 Dec 13 18:53 | 2024 Dec 04 18:46:02 | 26.3681 | 0.73559 | 11.3543 | 277.0306 | 9.9849 | 2.00720 | – |
| 2024 Dec 12 18:53 | 2024 Dec 04 18:46:02 | 26.3681 | 0.73559 | 11.3543 | 277.0306 | 9.9849 | 2.00720 | – |
| 2024 Dec 11 18:53 | 2024 Dec 04 18:46:02 | 26.3681 | 0.73559 | 11.3543 | 277.0306 | 9.9849 | 2.00720 | – |
| 2024 Dec 10 18:53 | 2024 Dec 04 18:46:02 | 26.3681 | 0.73559 | 11.3543 | 277.0306 | 9.9849 | 2.00720 | – |
| 2024 Dec 09 18:53 | 2024 Dec 04 18:46:02 | 26.3681 | 0.73559 | 11.3543 | 277.0306 | 9.9849 | 2.00720 | – |
| 2024 Dec 08 18:56 | 2024 Dec 04 18:46:02 | 26.3681 | 0.73559 | 11.3543 | 277.0306 | 9.9849 | 2.00720 | – |
| 2024 Dec 07 18:57 | 2024 Dec 04 18:46:02 | 26.3681 | 0.73559 | 11.3543 | 277.0306 | 9.9849 | 2.00720 | – |
| 2024 Dec 06 18:53 | 2024 Dec 04 18:46:02 | 26.3681 | 0.73559 | 11.3543 | 277.0306 | 9.9849 | 2.00720 | – |
| 2024 Dec 05 18:54 | 2024 Dec 04 18:46:02 | 26.3681 | 0.73559 | 11.3543 | 277.0306 | 9.9849 | 2.00720 | – |