Orbital elements of IUS R/B(2)
| Launched | 1 August 1991 |
| Flight ended | – |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 21641 |
| 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 Mar 25 18:56 | 2026 Mar 20 02:47:34 | 13.8485 | 0.00369 | 22.2454 | 345.4433 | 188.5703 | 1.00375 | – |
| 2026 Mar 24 18:56 | 2026 Mar 20 02:47:34 | 13.8485 | 0.00369 | 22.2454 | 345.4433 | 188.5703 | 1.00375 | – |
| 2026 Mar 23 18:56 | 2026 Mar 20 02:47:34 | 13.8485 | 0.00369 | 22.2454 | 345.4433 | 188.5703 | 1.00375 | – |
| 2026 Mar 22 18:56 | 2026 Mar 20 02:47:34 | 13.8485 | 0.00369 | 22.2454 | 345.4433 | 188.5703 | 1.00375 | – |
| 2026 Mar 21 19:05 | 2026 Mar 20 02:47:34 | 13.8485 | 0.00369 | 22.2454 | 345.4433 | 188.5703 | 1.00375 | – |
| 2026 Mar 20 18:57 | 2026 Mar 20 02:47:34 | 13.8485 | 0.00369 | 22.2454 | 345.4433 | 188.5703 | 1.00375 | – |
| 2026 Mar 19 18:56 | 2026 Mar 15 02:25:33 | 13.8540 | 0.00370 | 22.2481 | 345.0944 | 188.5703 | 1.00375 | – |
| 2026 Mar 18 18:56 | 2026 Mar 15 02:25:33 | 13.8540 | 0.00370 | 22.2481 | 345.0944 | 188.5703 | 1.00375 | – |
| 2026 Mar 17 18:56 | 2026 Mar 15 02:25:33 | 13.8540 | 0.00370 | 22.2481 | 345.0944 | 188.5703 | 1.00375 | – |
| 2026 Mar 16 18:57 | 2026 Mar 15 02:25:33 | 13.8540 | 0.00370 | 22.2481 | 345.0944 | 188.5703 | 1.00375 | – |
| 2026 Mar 15 18:56 | 2026 Mar 15 02:25:33 | 13.8540 | 0.00370 | 22.2481 | 345.0944 | 188.5703 | 1.00375 | – |
| 2026 Mar 14 18:56 | 2026 Mar 10 04:52:55 | 13.8595 | 0.00370 | 22.2507 | 344.7593 | 188.5703 | 1.00375 | – |
| 2026 Mar 13 18:57 | 2026 Mar 10 04:52:55 | 13.8595 | 0.00370 | 22.2507 | 344.7593 | 188.5703 | 1.00375 | – |
| 2026 Mar 12 18:57 | 2026 Mar 10 04:52:55 | 13.8595 | 0.00370 | 22.2507 | 344.7593 | 188.5703 | 1.00375 | – |
| 2026 Mar 11 18:56 | 2026 Mar 10 04:52:55 | 13.8595 | 0.00370 | 22.2507 | 344.7593 | 188.5703 | 1.00375 | – |
| 2026 Mar 10 18:56 | 2026 Mar 10 04:52:55 | 13.8595 | 0.00370 | 22.2507 | 344.7593 | 188.5703 | 1.00375 | – |
| 2026 Mar 09 18:56 | 2026 Mar 01 05:13:10 | 13.8694 | 0.00370 | 22.2556 | 344.3379 | 188.5703 | 1.00375 | – |
| 2026 Mar 08 18:57 | 2026 Mar 01 05:13:10 | 13.8694 | 0.00370 | 22.2556 | 344.3379 | 188.5703 | 1.00375 | – |
| 2026 Mar 07 18:57 | 2026 Mar 01 05:13:10 | 13.8694 | 0.00370 | 22.2556 | 344.3379 | 188.5703 | 1.00375 | – |
| 2026 Mar 06 18:56 | 2026 Mar 01 05:13:10 | 13.8694 | 0.00370 | 22.2556 | 344.3379 | 188.5703 | 1.00375 | – |
| 2026 Mar 05 18:56 | 2026 Mar 01 05:13:10 | 13.8694 | 0.00370 | 22.2556 | 344.3379 | 188.5703 | 1.00375 | – |
| 2026 Mar 04 18:57 | 2026 Mar 01 05:13:10 | 13.8694 | 0.00370 | 22.2556 | 344.3379 | 188.5703 | 1.00375 | – |
| 2026 Mar 03 18:56 | 2026 Feb 26 05:19:48 | 13.8726 | 0.00370 | 22.2573 | 344.2770 | 188.5703 | 1.00375 | – |
| 2026 Mar 02 18:57 | 2026 Feb 26 05:19:48 | 13.8726 | 0.00370 | 22.2573 | 344.2770 | 188.5703 | 1.00375 | – |
| 2026 Mar 01 18:57 | 2026 Feb 26 05:19:48 | 13.8726 | 0.00370 | 22.2573 | 344.2770 | 188.5703 | 1.00375 | – |
| 2026 Feb 28 18:56 | 2026 Feb 26 05:19:48 | 13.8726 | 0.00370 | 22.2573 | 344.2770 | 188.5703 | 1.00375 | – |
| 2026 Feb 27 19:05 | 2026 Feb 26 05:19:48 | 13.8726 | 0.00370 | 22.2573 | 344.2770 | 188.5703 | 1.00375 | – |
| 2026 Feb 26 20:45 | 2026 Feb 26 05:19:48 | 13.8726 | 0.00370 | 22.2573 | 344.2770 | 188.5703 | 1.00375 | – |