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 |
| 2026 Jul 26 17:56 | 2026 Jul 20 23:21:28 | 27.7290 | 0.73068 | 0.1353 | 194.7741 | 119.0388 | 2.00768 | – |
| 2026 Jul 25 17:57 | 2026 Jul 20 23:21:28 | 27.7290 | 0.73068 | 0.1353 | 194.7741 | 119.0388 | 2.00768 | – |
| 2026 Jul 24 17:56 | 2026 Jul 20 23:21:28 | 27.7290 | 0.73068 | 0.1353 | 194.7741 | 119.0388 | 2.00768 | – |
| 2026 Jul 23 17:57 | 2026 Jul 20 23:21:28 | 27.7290 | 0.73068 | 0.1353 | 194.7741 | 119.0388 | 2.00768 | – |
| 2026 Jul 22 17:57 | 2026 Jul 20 23:21:28 | 27.7290 | 0.73068 | 0.1353 | 194.7741 | 119.0388 | 2.00768 | – |
| 2026 Jul 21 17:57 | 2026 Jul 20 23:21:28 | 27.7290 | 0.73068 | 0.1353 | 194.7741 | 119.0388 | 2.00768 | – |
| 2026 Jul 20 17:57 | 2026 Jul 16 00:06:00 | 27.7267 | 0.73062 | 0.2259 | 192.5213 | 119.0388 | 2.00768 | – |
| 2026 Jul 19 19:06 | 2026 Jul 16 00:06:00 | 27.7267 | 0.73062 | 0.2259 | 192.5213 | 119.0388 | 2.00768 | – |
| 2026 Jul 19 17:57 | 2026 Jul 16 00:06:00 | 27.7267 | 0.73062 | 0.2259 | 192.5213 | 119.0388 | 2.00768 | – |
| 2026 Jul 18 17:57 | 2026 Jul 16 00:06:00 | 27.7267 | 0.73062 | 0.2259 | 192.5213 | 119.0388 | 2.00768 | – |
| 2026 Jul 17 17:57 | 2026 Jul 16 00:06:00 | 27.7267 | 0.73062 | 0.2259 | 192.5213 | 119.0388 | 2.00768 | – |
| 2026 Jul 16 17:56 | 2026 Jul 16 00:06:00 | 27.7267 | 0.73062 | 0.2259 | 192.5213 | 119.0388 | 2.00768 | – |
| 2026 Jul 15 17:57 | 2026 Jul 11 00:50:58 | 27.7222 | 0.73059 | 0.3166 | 190.2665 | 119.0388 | 2.00768 | – |
| 2026 Jul 14 17:56 | 2026 Jul 11 00:50:58 | 27.7222 | 0.73059 | 0.3166 | 190.2665 | 119.0388 | 2.00768 | – |
| 2026 Jul 13 17:56 | 2026 Jul 11 00:50:58 | 27.7222 | 0.73059 | 0.3166 | 190.2665 | 119.0388 | 2.00768 | – |
| 2026 Jul 12 17:56 | 2026 Jul 11 00:50:58 | 27.7222 | 0.73059 | 0.3166 | 190.2665 | 119.0388 | 2.00768 | – |
| 2026 Jul 11 17:56 | 2026 Jul 11 00:50:58 | 27.7222 | 0.73059 | 0.3166 | 190.2665 | 119.0388 | 2.00768 | – |
| 2026 Jul 09 17:56 | 2026 Jul 05 01:45:55 | 27.7152 | 0.73055 | 0.4253 | 187.5622 | 119.0388 | 2.00768 | – |
| 2026 Jul 08 17:56 | 2026 Jul 05 01:45:55 | 27.7152 | 0.73055 | 0.4253 | 187.5622 | 119.0388 | 2.00768 | – |
| 2026 Jul 07 17:56 | 2026 Jul 05 01:45:55 | 27.7152 | 0.73055 | 0.4253 | 187.5622 | 119.0388 | 2.00768 | – |
| 2026 Jul 06 17:57 | 2026 Jul 05 01:45:55 | 27.7152 | 0.73055 | 0.4253 | 187.5622 | 119.0388 | 2.00768 | – |
| 2026 Jul 05 17:56 | 2026 Jul 05 01:45:55 | 27.7152 | 0.73055 | 0.4253 | 187.5622 | 119.0388 | 2.00768 | – |
| 2026 Jul 04 17:56 | 2026 Jun 28 14:46:05 | 27.7079 | 0.73049 | 0.5432 | 184.6341 | 119.0388 | 2.00768 | – |
| 2026 Jul 03 17:57 | 2026 Jun 28 14:46:05 | 27.7079 | 0.73049 | 0.5432 | 184.6341 | 119.0388 | 2.00768 | – |
| 2026 Jul 02 17:56 | 2026 Jun 28 14:46:05 | 27.7079 | 0.73049 | 0.5432 | 184.6341 | 119.0388 | 2.00768 | – |
| 2026 Jul 01 17:56 | 2026 Jun 28 14:46:05 | 27.7079 | 0.73049 | 0.5432 | 184.6341 | 119.0388 | 2.00768 | – |
| 2026 Jun 30 17:56 | 2026 Jun 28 14:46:05 | 27.7079 | 0.73049 | 0.5432 | 184.6341 | 119.0388 | 2.00768 | – |
| 2026 Jun 29 17:57 | 2026 Jun 28 14:46:05 | 27.7079 | 0.73049 | 0.5432 | 184.6341 | 119.0388 | 2.00768 | – |