Orbital elements of IUS R/B(1)
| Launched | 23 January 1985 |
| Flight ended | – |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 15544 |
| 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 25 17:57 | 2026 Jul 21 00:31:52 | 27.9133 | 0.68282 | 1.4170 | 342.6149 | 2.3415 | 2.83561 | – |
| 2026 Jul 24 17:56 | 2026 Jul 21 00:31:52 | 27.9133 | 0.68282 | 1.4170 | 342.6149 | 2.3415 | 2.83561 | – |
| 2026 Jul 23 17:57 | 2026 Jul 21 00:31:52 | 27.9133 | 0.68282 | 1.4170 | 342.6149 | 2.3415 | 2.83561 | – |
| 2026 Jul 22 17:57 | 2026 Jul 21 00:31:52 | 27.9133 | 0.68282 | 1.4170 | 342.6149 | 2.3415 | 2.83561 | – |
| 2026 Jul 21 17:57 | 2026 Jul 21 00:31:52 | 27.9133 | 0.68282 | 1.4170 | 342.6149 | 2.3415 | 2.83561 | – |
| 2026 Jul 20 17:57 | 2026 Jul 16 02:02:55 | 27.9055 | 0.68278 | 1.5720 | 338.7943 | 2.3415 | 2.83561 | – |
| 2026 Jul 19 19:06 | 2026 Jul 16 02:02:55 | 27.9055 | 0.68278 | 1.5720 | 338.7943 | 2.3415 | 2.83561 | – |
| 2026 Jul 19 17:57 | 2026 Jul 16 02:02:55 | 27.9055 | 0.68278 | 1.5720 | 338.7943 | 2.3415 | 2.83561 | – |
| 2026 Jul 18 17:57 | 2026 Jul 16 02:02:55 | 27.9055 | 0.68278 | 1.5720 | 338.7943 | 2.3415 | 2.83561 | – |
| 2026 Jul 17 17:57 | 2026 Jul 16 02:02:55 | 27.9055 | 0.68278 | 1.5720 | 338.7943 | 2.3415 | 2.83561 | – |
| 2026 Jul 16 17:56 | 2026 Jul 16 02:02:55 | 27.9055 | 0.68278 | 1.5720 | 338.7943 | 2.3415 | 2.83561 | – |
| 2026 Jul 15 17:57 | 2026 Jul 11 12:01:45 | 27.8990 | 0.68275 | 1.7157 | 335.2528 | 2.3415 | 2.83561 | – |
| 2026 Jul 14 17:56 | 2026 Jul 11 12:01:45 | 27.8990 | 0.68275 | 1.7157 | 335.2528 | 2.3415 | 2.83561 | – |
| 2026 Jul 13 17:56 | 2026 Jul 11 12:01:45 | 27.8990 | 0.68275 | 1.7157 | 335.2528 | 2.3415 | 2.83561 | – |
| 2026 Jul 12 17:56 | 2026 Jul 11 12:01:45 | 27.8990 | 0.68275 | 1.7157 | 335.2528 | 2.3415 | 2.83561 | – |
| 2026 Jul 11 17:56 | 2026 Jul 11 12:01:45 | 27.8990 | 0.68275 | 1.7157 | 335.2528 | 2.3415 | 2.83561 | – |
| 2026 Jul 09 17:56 | 2026 Jul 04 10:45:47 | 27.8898 | 0.68273 | 1.9370 | 329.7998 | 2.3415 | 2.83561 | – |
| 2026 Jul 08 17:56 | 2026 Jul 04 10:45:47 | 27.8898 | 0.68273 | 1.9370 | 329.7998 | 2.3415 | 2.83561 | – |
| 2026 Jul 07 17:56 | 2026 Jul 04 10:45:47 | 27.8898 | 0.68273 | 1.9370 | 329.7998 | 2.3415 | 2.83561 | – |
| 2026 Jul 06 17:57 | 2026 Jul 04 10:45:47 | 27.8898 | 0.68273 | 1.9370 | 329.7998 | 2.3415 | 2.83561 | – |
| 2026 Jul 05 17:56 | 2026 Jul 04 10:45:47 | 27.8898 | 0.68273 | 1.9370 | 329.7998 | 2.3415 | 2.83561 | – |
| 2026 Jul 04 17:56 | 2026 Jun 28 10:53:00 | 27.8821 | 0.68270 | 2.1249 | 325.1723 | 2.3415 | 2.83561 | – |
| 2026 Jul 03 17:57 | 2026 Jun 28 10:53:00 | 27.8821 | 0.68270 | 2.1249 | 325.1723 | 2.3415 | 2.83561 | – |
| 2026 Jul 02 17:56 | 2026 Jun 28 10:53:00 | 27.8821 | 0.68270 | 2.1249 | 325.1723 | 2.3415 | 2.83561 | – |
| 2026 Jul 01 17:56 | 2026 Jun 28 10:53:00 | 27.8821 | 0.68270 | 2.1249 | 325.1723 | 2.3415 | 2.83561 | – |
| 2026 Jun 30 17:56 | 2026 Jun 28 10:53:00 | 27.8821 | 0.68270 | 2.1249 | 325.1723 | 2.3415 | 2.83561 | – |
| 2026 Jun 29 17:57 | 2026 Jun 28 10:53:00 | 27.8821 | 0.68270 | 2.1249 | 325.1723 | 2.3415 | 2.83561 | – |
| 2026 Jun 28 17:56 | 2026 Jun 22 11:00:00 | 27.8739 | 0.68269 | 2.3132 | 320.5419 | 2.3415 | 2.83561 | – |