Orbital elements of IUS R/B(1)
| Launched | 1 August 1991 |
| Flight ended | – |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 21640 |
| 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 Jan 30 18:57 | 2026 Jan 27 16:37:15 | 26.3582 | 0.66504 | 7.3684 | 94.4395 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 29 18:56 | 2026 Jan 27 16:37:15 | 26.3582 | 0.66504 | 7.3684 | 94.4395 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 28 18:56 | 2026 Jan 27 16:37:15 | 26.3582 | 0.66504 | 7.3684 | 94.4395 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 27 18:56 | 2026 Jan 21 13:45:03 | 26.3562 | 0.66490 | 7.5919 | 88.8542 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 26 18:57 | 2026 Jan 21 13:45:03 | 26.3562 | 0.66490 | 7.5919 | 88.8542 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 25 18:57 | 2026 Jan 21 13:45:03 | 26.3562 | 0.66490 | 7.5919 | 88.8542 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 24 18:58 | 2026 Jan 21 13:45:03 | 26.3562 | 0.66490 | 7.5919 | 88.8542 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 22 18:56 | 2026 Jan 21 13:45:03 | 26.3562 | 0.66490 | 7.5919 | 88.8542 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 21 18:56 | 2026 Jan 15 10:50:53 | 26.3552 | 0.66478 | 7.8139 | 83.2922 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 20 19:06 | 2026 Jan 15 10:50:53 | 26.3552 | 0.66478 | 7.8139 | 83.2922 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 19 18:57 | 2026 Jan 15 10:50:53 | 26.3552 | 0.66478 | 7.8139 | 83.2922 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 18 18:57 | 2026 Jan 15 10:50:53 | 26.3552 | 0.66478 | 7.8139 | 83.2922 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 17 18:56 | 2026 Jan 15 10:50:53 | 26.3552 | 0.66478 | 7.8139 | 83.2922 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 16 18:57 | 2026 Jan 15 10:50:53 | 26.3552 | 0.66478 | 7.8139 | 83.2922 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 15 18:56 | 2026 Jan 11 14:03:29 | 26.3571 | 0.66471 | 7.9541 | 79.7822 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 13 18:56 | 2026 Jan 11 14:03:29 | 26.3571 | 0.66471 | 7.9541 | 79.7822 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 11 18:57 | 2026 Jan 11 14:03:29 | 26.3571 | 0.66471 | 7.9541 | 79.7822 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 10 18:57 | 2026 Jan 05 11:07:17 | 26.3578 | 0.66459 | 8.1757 | 74.2223 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 09 18:57 | 2026 Jan 05 11:07:17 | 26.3578 | 0.66459 | 8.1757 | 74.2223 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 08 18:56 | 2026 Jan 05 11:07:17 | 26.3578 | 0.66459 | 8.1757 | 74.2223 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 07 18:57 | 2026 Jan 05 11:07:17 | 26.3578 | 0.66459 | 8.1757 | 74.2223 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 06 18:56 | 2026 Jan 05 11:07:17 | 26.3578 | 0.66459 | 8.1757 | 74.2223 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 05 18:57 | 2025 Dec 30 23:38:15 | 26.3623 | 0.66445 | 8.3742 | 69.2518 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 04 18:56 | 2025 Dec 30 23:38:15 | 26.3623 | 0.66445 | 8.3742 | 69.2518 | 338.1244 | 3.10394 | 5.243 |
| 2026 Jan 03 18:57 | 2025 Dec 30 23:38:15 | 26.3623 | 0.66445 | 8.3742 | 69.2518 | 338.1244 | 3.10394 | 5.243 |