Orbital elements of USA 77
| Launched | 7 November 1991 |
| Flight ended | – |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 21809 |
| 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 |
| 2025 Sep 12 17:57 | 2025 Sep 03 03:07:25 | 63.2977 | 0.09006 | 13.5194 | 69.2140 | 300.2950 | 13.53879 | 5.243 |
| 2025 Sep 11 17:57 | 2025 Sep 03 03:07:25 | 63.2977 | 0.09006 | 13.5194 | 69.2140 | 300.2950 | 13.53879 | 5.243 |
| 2025 Sep 10 17:56 | 2025 Sep 03 03:07:25 | 63.2977 | 0.09006 | 13.5194 | 69.2140 | 300.2950 | 13.53879 | 5.243 |
| 2025 Sep 08 17:57 | 2025 Sep 03 03:07:25 | 63.2977 | 0.09006 | 13.5194 | 69.2140 | 300.2950 | 13.53879 | 5.243 |
| 2025 Sep 07 17:56 | 2025 Sep 03 03:07:25 | 63.2977 | 0.09006 | 13.5194 | 69.2140 | 300.2950 | 13.53879 | 5.243 |
| 2025 Sep 06 20:41 | 2025 Sep 03 03:07:25 | 63.2977 | 0.09006 | 13.5194 | 69.2140 | 300.2950 | 13.53879 | 5.243 |
| 2025 Sep 03 17:57 | 2025 Sep 03 03:07:25 | 63.2977 | 0.09006 | 13.5194 | 69.2140 | 300.2950 | 13.53879 | 5.243 |
| 2025 Sep 02 17:56 | 2025 Aug 27 16:53:44 | 63.2976 | 0.09007 | 14.6582 | 69.0962 | 300.2950 | 13.53879 | 5.243 |
| 2025 Sep 01 17:56 | 2025 Aug 27 16:53:44 | 63.2976 | 0.09007 | 14.6582 | 69.0962 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 31 17:56 | 2025 Aug 27 16:53:44 | 63.2976 | 0.09007 | 14.6582 | 69.0962 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 30 17:56 | 2025 Aug 27 16:53:44 | 63.2976 | 0.09007 | 14.6582 | 69.0962 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 29 17:56 | 2025 Aug 27 16:53:44 | 63.2976 | 0.09007 | 14.6582 | 69.0962 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 28 17:57 | 2025 Aug 27 16:53:44 | 63.2976 | 0.09007 | 14.6582 | 69.0962 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 27 17:56 | 2025 Aug 23 06:31:38 | 63.2966 | 0.09007 | 15.4436 | 69.0136 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 26 17:56 | 2025 Aug 23 06:31:38 | 63.2966 | 0.09007 | 15.4436 | 69.0136 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 25 17:56 | 2025 Aug 23 06:31:38 | 63.2966 | 0.09007 | 15.4436 | 69.0136 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 24 17:56 | 2025 Aug 23 06:31:38 | 63.2966 | 0.09007 | 15.4436 | 69.0136 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 23 17:56 | 2025 Aug 23 06:31:38 | 63.2966 | 0.09007 | 15.4436 | 69.0136 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 22 17:56 | 2025 Aug 17 19:20:10 | 63.2974 | 0.09007 | 16.4122 | 68.9132 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 20 17:56 | 2025 Aug 17 19:20:10 | 63.2974 | 0.09007 | 16.4122 | 68.9132 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 19 17:56 | 2025 Aug 17 19:20:10 | 63.2974 | 0.09007 | 16.4122 | 68.9132 | 300.2950 | 13.53879 | 5.243 |
| 2025 Aug 18 17:56 | 2025 Aug 17 19:20:10 | 63.2974 | 0.09007 | 16.4122 | 68.9132 | 300.2950 | 13.53879 | 5.243 |