Orbital elements of OPS 6157
| Launched | 11 June 1973 |
| Flight ended | – |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 6691 |
| Alternative names |
DSP 4 |
| 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 31 17:57 | 2026 Mar 26 12:34:38 | 1.0749 | 0.00083 | 15.3704 | 66.1539 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 30 17:58 | 2026 Mar 26 12:34:38 | 1.0749 | 0.00083 | 15.3704 | 66.1539 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 29 17:57 | 2026 Mar 26 12:34:38 | 1.0749 | 0.00083 | 15.3704 | 66.1539 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 28 18:57 | 2026 Mar 26 12:34:38 | 1.0749 | 0.00083 | 15.3704 | 66.1539 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 27 18:57 | 2026 Mar 26 12:34:38 | 1.0749 | 0.00083 | 15.3704 | 66.1539 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 26 18:57 | 2026 Mar 26 12:34:38 | 1.0749 | 0.00083 | 15.3704 | 66.1539 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 25 18:56 | 2026 Mar 20 07:16:22 | 1.0894 | 0.00083 | 15.4124 | 65.1123 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 24 18:56 | 2026 Mar 20 07:16:22 | 1.0894 | 0.00083 | 15.4124 | 65.1123 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 23 18:56 | 2026 Mar 20 07:16:22 | 1.0894 | 0.00083 | 15.4124 | 65.1123 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 22 18:56 | 2026 Mar 20 07:16:22 | 1.0894 | 0.00083 | 15.4124 | 65.1123 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 21 19:05 | 2026 Mar 20 07:16:22 | 1.0894 | 0.00083 | 15.4124 | 65.1123 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 20 18:57 | 2026 Mar 20 07:16:22 | 1.0894 | 0.00083 | 15.4124 | 65.1123 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 19 18:56 | 2026 Mar 15 14:21:17 | 1.0999 | 0.00082 | 15.4430 | 64.9692 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 18 18:56 | 2026 Mar 15 14:21:17 | 1.0999 | 0.00082 | 15.4430 | 64.9692 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 17 18:56 | 2026 Mar 15 14:21:17 | 1.0999 | 0.00082 | 15.4430 | 64.9692 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 16 18:57 | 2026 Mar 15 14:21:17 | 1.0999 | 0.00082 | 15.4430 | 64.9692 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 15 18:56 | 2026 Mar 15 14:21:17 | 1.0999 | 0.00082 | 15.4430 | 64.9692 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 14 18:56 | 2026 Mar 10 11:17:38 | 1.1102 | 0.00083 | 15.4730 | 64.3332 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 13 18:57 | 2026 Mar 10 11:17:38 | 1.1102 | 0.00083 | 15.4730 | 64.3332 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 12 18:57 | 2026 Mar 10 11:17:38 | 1.1102 | 0.00083 | 15.4730 | 64.3332 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 11 18:56 | 2026 Mar 10 11:17:38 | 1.1102 | 0.00083 | 15.4730 | 64.3332 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 10 18:56 | 2026 Mar 10 11:17:38 | 1.1102 | 0.00083 | 15.4730 | 64.3332 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 09 18:56 | 2026 Mar 04 13:08:38 | 1.1220 | 0.00088 | 15.5083 | 62.3035 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 08 18:57 | 2026 Mar 04 13:08:38 | 1.1220 | 0.00088 | 15.5083 | 62.3035 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 07 18:57 | 2026 Mar 04 13:08:38 | 1.1220 | 0.00088 | 15.5083 | 62.3035 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 06 18:56 | 2026 Mar 04 13:08:38 | 1.1220 | 0.00088 | 15.5083 | 62.3035 | 216.5349 | 0.99827 | 5.243 |
| 2026 Mar 05 18:56 | 2026 Mar 04 13:08:38 | 1.1220 | 0.00088 | 15.5083 | 62.3035 | 216.5349 | 0.99827 | 5.243 |