Orbital elements of EXPLORER 31
| Launched | 28 November 1965 |
| Flight ended | – |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 1806 |
| Alternative names |
ISIS-X |
| 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 Jul 11 17:56 | 2025 Jul 08 17:01:55 | 79.7759 | 0.14250 | 18.2020 | 87.6481 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jul 10 17:56 | 2025 Jul 08 17:01:55 | 79.7759 | 0.14250 | 18.2020 | 87.6481 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jul 09 17:56 | 2025 Jul 08 17:01:55 | 79.7759 | 0.14250 | 18.2020 | 87.6481 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jul 08 17:56 | 2025 Jul 03 11:48:06 | 79.7764 | 0.14252 | 18.4887 | 97.8627 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jul 07 17:56 | 2025 Jul 03 11:48:06 | 79.7764 | 0.14252 | 18.4887 | 97.8627 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jul 06 17:56 | 2025 Jul 03 11:48:06 | 79.7764 | 0.14252 | 18.4887 | 97.8627 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jul 05 17:56 | 2025 Jul 03 11:48:06 | 79.7764 | 0.14252 | 18.4887 | 97.8627 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jul 04 17:56 | 2025 Jul 03 11:48:06 | 79.7764 | 0.14252 | 18.4887 | 97.8627 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jul 03 17:56 | 2025 Jul 03 11:48:06 | 79.7764 | 0.14252 | 18.4887 | 97.8627 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jul 02 17:56 | 2025 Jun 28 08:33:22 | 79.7769 | 0.14255 | 18.7707 | 107.9129 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jul 01 17:56 | 2025 Jun 28 08:33:22 | 79.7769 | 0.14255 | 18.7707 | 107.9129 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 30 17:56 | 2025 Jun 28 08:33:22 | 79.7769 | 0.14255 | 18.7707 | 107.9129 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 29 17:56 | 2025 Jun 28 08:33:22 | 79.7769 | 0.14255 | 18.7707 | 107.9129 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 28 17:56 | 2025 Jun 28 08:33:22 | 79.7769 | 0.14255 | 18.7707 | 107.9129 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 27 17:56 | 2025 Jun 23 13:15:32 | 79.7775 | 0.14258 | 19.0346 | 117.3124 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 26 17:56 | 2025 Jun 23 13:15:32 | 79.7775 | 0.14258 | 19.0346 | 117.3124 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 25 17:56 | 2025 Jun 23 13:15:32 | 79.7775 | 0.14258 | 19.0346 | 117.3124 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 24 17:56 | 2025 Jun 23 13:15:32 | 79.7775 | 0.14258 | 19.0346 | 117.3124 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 23 17:56 | 2025 Jun 23 13:15:32 | 79.7775 | 0.14258 | 19.0346 | 117.3124 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 22 17:56 | 2025 Jun 17 08:09:50 | 79.7789 | 0.14259 | 19.3759 | 129.4652 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 21 17:56 | 2025 Jun 17 08:09:50 | 79.7789 | 0.14259 | 19.3759 | 129.4652 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 20 17:57 | 2025 Jun 17 08:09:50 | 79.7789 | 0.14259 | 19.3759 | 129.4652 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 19 17:56 | 2025 Jun 17 08:09:50 | 79.7789 | 0.14259 | 19.3759 | 129.4652 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 18 17:56 | 2025 Jun 17 08:09:50 | 79.7789 | 0.14259 | 19.3759 | 129.4652 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 17 17:56 | 2025 Jun 17 08:09:50 | 79.7789 | 0.14259 | 19.3759 | 129.4652 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 16 17:56 | 2025 Jun 11 18:58:08 | 79.7794 | 0.14259 | 19.6808 | 140.3263 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 15 17:56 | 2025 Jun 11 18:58:08 | 79.7794 | 0.14259 | 19.6808 | 140.3263 | 288.6467 | 12.07912 | 9.243 |
| 2025 Jun 14 17:56 | 2025 Jun 11 18:58:08 | 79.7794 | 0.14259 | 19.6808 | 140.3263 | 288.6467 | 12.07912 | 9.243 |