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 May 09 17:57 | 2026 May 04 23:20:22 | 26.6109 | 0.66508 | 3.8141 | 183.5638 | 166.8754 | 3.11783 | 5.243 |
| 2026 May 08 17:57 | 2026 May 04 23:20:22 | 26.6109 | 0.66508 | 3.8141 | 183.5638 | 166.8754 | 3.11783 | 5.243 |
| 2026 May 07 17:58 | 2026 May 04 23:20:22 | 26.6109 | 0.66508 | 3.8141 | 183.5638 | 166.8754 | 3.11783 | 5.243 |
| 2026 May 06 17:57 | 2026 May 04 23:20:22 | 26.6109 | 0.66508 | 3.8141 | 183.5638 | 166.8754 | 3.11783 | 5.243 |
| 2026 May 05 17:57 | 2026 May 04 23:20:22 | 26.6109 | 0.66508 | 3.8141 | 183.5638 | 166.8754 | 3.11783 | 5.243 |
| 2026 May 04 17:57 | 2026 Apr 28 21:29:36 | 26.5932 | 0.66518 | 4.0361 | 177.9882 | 166.8754 | 3.11783 | 5.243 |
| 2026 May 03 17:57 | 2026 Apr 28 21:29:36 | 26.5932 | 0.66518 | 4.0361 | 177.9882 | 166.8754 | 3.11783 | 5.243 |
| 2026 May 02 17:57 | 2026 Apr 28 21:29:36 | 26.5932 | 0.66518 | 4.0361 | 177.9882 | 166.8754 | 3.11783 | 5.243 |
| 2026 May 01 17:56 | 2026 Apr 28 21:29:36 | 26.5932 | 0.66518 | 4.0361 | 177.9882 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 30 17:56 | 2026 Apr 28 21:29:36 | 26.5932 | 0.66518 | 4.0361 | 177.9882 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 29 17:57 | 2026 Apr 24 09:59:25 | 26.5826 | 0.66523 | 4.1998 | 173.8760 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 28 17:56 | 2026 Apr 24 09:59:25 | 26.5826 | 0.66523 | 4.1998 | 173.8760 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 27 17:58 | 2026 Apr 24 09:59:25 | 26.5826 | 0.66523 | 4.1998 | 173.8760 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 26 17:58 | 2026 Apr 24 09:59:25 | 26.5826 | 0.66523 | 4.1998 | 173.8760 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 25 17:58 | 2026 Apr 24 09:59:25 | 26.5826 | 0.66523 | 4.1998 | 173.8760 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 24 17:59 | 2026 Apr 24 09:59:25 | 26.5826 | 0.66523 | 4.1998 | 173.8760 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 23 17:57 | 2026 Apr 18 23:24:12 | 26.5607 | 0.66535 | 4.3984 | 168.8792 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 22 17:57 | 2026 Apr 18 23:24:12 | 26.5607 | 0.66535 | 4.3984 | 168.8792 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 21 17:57 | 2026 Apr 18 23:24:12 | 26.5607 | 0.66535 | 4.3984 | 168.8792 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 20 17:57 | 2026 Apr 18 23:24:12 | 26.5607 | 0.66535 | 4.3984 | 168.8792 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 19 17:58 | 2026 Apr 18 23:24:12 | 26.5607 | 0.66535 | 4.3984 | 168.8792 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 18 17:56 | 2026 Apr 12 21:22:45 | 26.5415 | 0.66538 | 4.6212 | 163.2885 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 16 17:57 | 2026 Apr 12 21:22:45 | 26.5415 | 0.66538 | 4.6212 | 163.2885 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 14 17:57 | 2026 Apr 12 21:22:45 | 26.5415 | 0.66538 | 4.6212 | 163.2885 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 13 17:57 | 2026 Apr 12 21:22:45 | 26.5415 | 0.66538 | 4.6212 | 163.2885 | 166.8754 | 3.11783 | 5.243 |
| 2026 Apr 12 17:57 | 2026 Apr 08 02:02:21 | 26.5245 | 0.66544 | 4.7965 | 158.8783 | 166.8754 | 3.11783 | 5.243 |