Orbital elements of ATLAS 55E R/B
| Launched | 8 October 1985 |
| Flight ended | – |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 16137 |
| 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 Apr 30 17:56 | 2026 Apr 28 06:32:09 | 64.1687 | 0.54400 | 5.9101 | 328.7978 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 29 17:57 | 2026 Apr 22 21:37:32 | 64.1647 | 0.54414 | 6.0115 | 328.8945 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 28 17:56 | 2026 Apr 22 21:37:32 | 64.1647 | 0.54414 | 6.0115 | 328.8945 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 27 17:58 | 2026 Apr 22 21:37:32 | 64.1647 | 0.54414 | 6.0115 | 328.8945 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 26 17:58 | 2026 Apr 22 21:37:32 | 64.1647 | 0.54414 | 6.0115 | 328.8945 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 25 17:58 | 2026 Apr 22 21:37:32 | 64.1647 | 0.54414 | 6.0115 | 328.8945 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 24 17:59 | 2026 Apr 22 21:37:32 | 64.1647 | 0.54414 | 6.0115 | 328.8945 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 23 17:57 | 2026 Apr 18 07:07:51 | 64.1612 | 0.54427 | 6.0985 | 328.9759 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 22 17:57 | 2026 Apr 18 07:07:51 | 64.1612 | 0.54427 | 6.0985 | 328.9759 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 21 17:57 | 2026 Apr 18 07:07:51 | 64.1612 | 0.54427 | 6.0985 | 328.9759 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 20 17:57 | 2026 Apr 18 07:07:51 | 64.1612 | 0.54427 | 6.0985 | 328.9759 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 19 17:58 | 2026 Apr 18 07:07:51 | 64.1612 | 0.54427 | 6.0985 | 328.9759 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 18 17:56 | 2026 Apr 11 21:39:59 | 64.1559 | 0.54446 | 6.2194 | 329.0871 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 16 17:57 | 2026 Apr 11 21:39:59 | 64.1559 | 0.54446 | 6.2194 | 329.0871 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 14 17:57 | 2026 Apr 11 21:39:59 | 64.1559 | 0.54446 | 6.2194 | 329.0871 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 13 17:57 | 2026 Apr 11 21:39:59 | 64.1559 | 0.54446 | 6.2194 | 329.0871 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 12 17:57 | 2026 Apr 07 07:10:18 | 64.1520 | 0.54459 | 6.3065 | 329.1660 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 11 17:57 | 2026 Apr 07 07:10:18 | 64.1520 | 0.54459 | 6.3065 | 329.1660 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 10 17:58 | 2026 Apr 07 07:10:18 | 64.1520 | 0.54459 | 6.3065 | 329.1660 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 09 18:01 | 2026 Apr 07 07:10:18 | 64.1520 | 0.54459 | 6.3065 | 329.1660 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 08 17:57 | 2026 Apr 07 07:10:18 | 64.1520 | 0.54459 | 6.3065 | 329.1660 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 07 17:57 | 2026 Apr 01 09:59:03 | 64.1476 | 0.54476 | 6.4178 | 329.2667 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 06 17:57 | 2026 Apr 01 09:59:03 | 64.1476 | 0.54476 | 6.4178 | 329.2667 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 05 17:56 | 2026 Apr 01 09:59:03 | 64.1476 | 0.54476 | 6.4178 | 329.2667 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 04 17:57 | 2026 Apr 01 09:59:03 | 64.1476 | 0.54476 | 6.4178 | 329.2667 | 7.9677 | 3.90970 | 7.743 |
| 2026 Apr 03 17:56 | 2026 Apr 01 09:59:03 | 64.1476 | 0.54476 | 6.4178 | 329.2667 | 7.9677 | 3.90970 | 7.743 |