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 May 08 17:56 | 2025 May 03 14:34:45 | 79.7744 | 0.14252 | 21.8340 | 217.0571 | 132.3316 | 12.07809 | 9.243 |
| 2025 May 07 17:56 | 2025 May 03 14:34:45 | 79.7744 | 0.14252 | 21.8340 | 217.0571 | 132.3316 | 12.07809 | 9.243 |
| 2025 May 06 17:57 | 2025 May 03 14:34:45 | 79.7744 | 0.14252 | 21.8340 | 217.0571 | 132.3316 | 12.07809 | 9.243 |
| 2025 May 05 17:56 | 2025 May 03 14:34:45 | 79.7744 | 0.14252 | 21.8340 | 217.0571 | 132.3316 | 12.07809 | 9.243 |
| 2025 May 04 17:57 | 2025 May 03 14:34:45 | 79.7744 | 0.14252 | 21.8340 | 217.0571 | 132.3316 | 12.07809 | 9.243 |
| 2025 May 03 17:57 | 2025 May 03 14:34:45 | 79.7744 | 0.14252 | 21.8340 | 217.0571 | 132.3316 | 12.07809 | 9.243 |
| 2025 May 01 17:56 | 2025 Apr 22 14:09:21 | 79.7766 | 0.14249 | 22.4398 | 238.6166 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 30 17:56 | 2025 Apr 22 14:09:21 | 79.7766 | 0.14249 | 22.4398 | 238.6166 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 29 17:57 | 2025 Apr 22 14:09:21 | 79.7766 | 0.14249 | 22.4398 | 238.6166 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 27 17:56 | 2025 Apr 22 14:09:21 | 79.7766 | 0.14249 | 22.4398 | 238.6166 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 26 17:57 | 2025 Apr 22 14:09:21 | 79.7766 | 0.14249 | 22.4398 | 238.6166 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 25 17:56 | 2025 Apr 22 14:09:21 | 79.7766 | 0.14249 | 22.4398 | 238.6166 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 24 17:56 | 2025 Apr 22 14:09:21 | 79.7766 | 0.14249 | 22.4398 | 238.6166 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 23 17:57 | 2025 Apr 22 14:09:21 | 79.7766 | 0.14249 | 22.4398 | 238.6166 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 22 17:56 | 2025 Apr 22 14:09:21 | 79.7766 | 0.14249 | 22.4398 | 238.6166 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 21 17:57 | 2025 Apr 15 21:07:17 | 79.7790 | 0.14248 | 22.8088 | 251.7555 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 20 17:56 | 2025 Apr 15 21:07:17 | 79.7790 | 0.14248 | 22.8088 | 251.7555 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 19 17:56 | 2025 Apr 15 21:07:17 | 79.7790 | 0.14248 | 22.8088 | 251.7555 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 18 17:57 | 2025 Apr 15 21:07:17 | 79.7790 | 0.14248 | 22.8088 | 251.7555 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 17 17:56 | 2025 Apr 15 21:07:17 | 79.7790 | 0.14248 | 22.8088 | 251.7555 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 16 17:57 | 2025 Apr 15 21:07:17 | 79.7790 | 0.14248 | 22.8088 | 251.7555 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 15 17:56 | 2025 Apr 10 17:51:49 | 79.7812 | 0.14248 | 23.0911 | 261.8154 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 14 17:56 | 2025 Apr 10 17:51:49 | 79.7812 | 0.14248 | 23.0911 | 261.8154 | 132.3316 | 12.07809 | 9.243 |
| 2025 Apr 11 17:57 | 2025 Apr 10 17:51:49 | 79.7812 | 0.14248 | 23.0911 | 261.8154 | 132.3316 | 12.07809 | 9.243 |