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 May 25 17:57 | 2026 May 21 00:17:04 | 27.8318 | 0.68257 | 3.3341 | 295.4407 | 10.7870 | 2.83478 | – |
| 2026 May 24 17:57 | 2026 May 21 00:17:04 | 27.8318 | 0.68257 | 3.3341 | 295.4407 | 10.7870 | 2.83478 | – |
| 2026 May 23 17:58 | 2026 May 21 00:17:04 | 27.8318 | 0.68257 | 3.3341 | 295.4407 | 10.7870 | 2.83478 | – |
| 2026 May 22 17:57 | 2026 May 21 00:17:04 | 27.8318 | 0.68257 | 3.3341 | 295.4407 | 10.7870 | 2.83478 | – |
| 2026 May 21 17:57 | 2026 May 21 00:17:04 | 27.8318 | 0.68257 | 3.3341 | 295.4407 | 10.7870 | 2.83478 | – |
| 2026 May 20 17:57 | 2026 May 16 01:46:42 | 27.8273 | 0.68253 | 3.4898 | 291.6152 | 10.7870 | 2.83478 | – |
| 2026 May 19 17:58 | 2026 May 16 01:46:42 | 27.8273 | 0.68253 | 3.4898 | 291.6152 | 10.7870 | 2.83478 | – |
| 2026 May 18 17:57 | 2026 May 16 01:46:42 | 27.8273 | 0.68253 | 3.4898 | 291.6152 | 10.7870 | 2.83478 | – |
| 2026 May 17 17:57 | 2026 May 16 01:46:42 | 27.8273 | 0.68253 | 3.4898 | 291.6152 | 10.7870 | 2.83478 | – |
| 2026 May 16 17:56 | 2026 May 16 01:46:42 | 27.8273 | 0.68253 | 3.4898 | 291.6152 | 10.7870 | 2.83478 | – |
| 2026 May 15 17:57 | 2026 May 09 17:24:37 | 27.8235 | 0.68253 | 3.6897 | 286.6974 | 10.7870 | 2.83478 | – |
| 2026 May 14 17:58 | 2026 May 09 17:24:37 | 27.8235 | 0.68253 | 3.6897 | 286.6974 | 10.7870 | 2.83478 | – |
| 2026 May 13 17:58 | 2026 May 09 17:24:37 | 27.8235 | 0.68253 | 3.6897 | 286.6974 | 10.7870 | 2.83478 | – |
| 2026 May 12 17:58 | 2026 May 09 17:24:37 | 27.8235 | 0.68253 | 3.6897 | 286.6974 | 10.7870 | 2.83478 | – |
| 2026 May 11 17:56 | 2026 May 09 17:24:37 | 27.8235 | 0.68253 | 3.6897 | 286.6974 | 10.7870 | 2.83478 | – |
| 2026 May 10 17:57 | 2026 May 09 17:24:37 | 27.8235 | 0.68253 | 3.6897 | 286.6974 | 10.7870 | 2.83478 | – |
| 2026 May 09 17:57 | 2026 May 05 03:22:00 | 27.8213 | 0.68253 | 3.8341 | 283.1465 | 10.7870 | 2.83478 | – |
| 2026 May 08 17:57 | 2026 May 05 03:22:00 | 27.8213 | 0.68253 | 3.8341 | 283.1465 | 10.7870 | 2.83478 | – |
| 2026 May 07 17:58 | 2026 May 05 03:22:00 | 27.8213 | 0.68253 | 3.8341 | 283.1465 | 10.7870 | 2.83478 | – |
| 2026 May 06 17:57 | 2026 May 05 03:22:00 | 27.8213 | 0.68253 | 3.8341 | 283.1465 | 10.7870 | 2.83478 | – |
| 2026 May 05 17:57 | 2026 May 05 03:22:00 | 27.8213 | 0.68253 | 3.8341 | 283.1465 | 10.7870 | 2.83478 | – |
| 2026 May 04 17:57 | 2026 Apr 28 02:03:59 | 27.8197 | 0.68253 | 4.0563 | 277.6806 | 10.7870 | 2.83478 | – |
| 2026 May 03 17:57 | 2026 Apr 28 02:03:59 | 27.8197 | 0.68253 | 4.0563 | 277.6806 | 10.7870 | 2.83478 | – |
| 2026 May 02 17:57 | 2026 Apr 28 02:03:59 | 27.8197 | 0.68253 | 4.0563 | 277.6806 | 10.7870 | 2.83478 | – |
| 2026 May 01 17:56 | 2026 Apr 28 02:03:59 | 27.8197 | 0.68253 | 4.0563 | 277.6806 | 10.7870 | 2.83478 | – |
| 2026 Apr 30 17:56 | 2026 Apr 28 02:03:59 | 27.8197 | 0.68253 | 4.0563 | 277.6806 | 10.7870 | 2.83478 | – |
| 2026 Apr 29 17:57 | 2026 Apr 23 03:33:11 | 27.8182 | 0.68250 | 4.2121 | 273.8440 | 10.7870 | 2.83478 | – |
| 2026 Apr 28 17:56 | 2026 Apr 23 03:33:11 | 27.8182 | 0.68250 | 4.2121 | 273.8440 | 10.7870 | 2.83478 | – |