Orbital elements of USA 99
| Launched | 6 February 1994 |
| Flight ended | – |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 22988 |
| Alternative names |
MILSTAR-1 1 |
| 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 16 17:57 | 2026 Apr 16 02:28:16 | 17.5253 | 0.00033 | 1.8920 | 340.8405 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 14 17:57 | 2026 Apr 14 11:56:09 | 17.5228 | 0.00034 | 1.8931 | 341.5143 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 13 17:57 | 2026 Apr 12 10:07:05 | 17.5197 | 0.00035 | 1.8946 | 341.9078 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 12 17:57 | 2026 Apr 12 10:07:05 | 17.5197 | 0.00035 | 1.8946 | 341.9078 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 11 17:57 | 2026 Apr 11 06:55:59 | 17.5181 | 0.00035 | 1.8954 | 341.7419 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 10 17:58 | 2026 Apr 09 07:01:01 | 17.5154 | 0.00037 | 1.8968 | 341.0834 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 09 18:01 | 2026 Apr 09 05:50:34 | 17.5153 | 0.00037 | 1.8969 | 341.0488 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 08 17:57 | 2026 Apr 08 03:29:54 | 17.5138 | 0.00038 | 1.8976 | 340.4014 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 07 17:57 | 2026 Apr 07 04:29:32 | 17.5125 | 0.00038 | 1.8983 | 339.5600 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 06 17:57 | 2026 Apr 05 07:51:38 | 17.5100 | 0.00039 | 1.8997 | 337.4361 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 05 17:56 | 2026 Apr 05 07:51:38 | 17.5100 | 0.00039 | 1.8997 | 337.4361 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 04 17:57 | 2026 Apr 03 07:15:55 | 17.5072 | 0.00040 | 1.9012 | 334.4945 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 03 17:56 | 2026 Apr 03 07:15:55 | 17.5072 | 0.00040 | 1.9012 | 334.4945 | 142.0703 | 1.00270 | 3.243 |
| 2026 Apr 02 18:03 | 2026 Apr 01 09:13:10 | 17.5046 | 0.00040 | 1.9026 | 331.2455 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 31 17:57 | 2026 Mar 31 02:38:35 | 17.5028 | 0.00040 | 1.9035 | 329.0830 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 30 17:58 | 2026 Mar 30 07:25:47 | 17.5016 | 0.00040 | 1.9040 | 327.6701 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 29 17:57 | 2026 Mar 28 07:54:38 | 17.4988 | 0.00040 | 1.9054 | 324.3153 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 28 18:57 | 2026 Mar 28 07:54:38 | 17.4988 | 0.00040 | 1.9054 | 324.3153 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 27 18:57 | 2026 Mar 27 06:01:17 | 17.4971 | 0.00039 | 1.9062 | 322.6139 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 26 18:57 | 2026 Mar 26 07:35:43 | 17.4957 | 0.00039 | 1.9068 | 321.4887 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 25 18:56 | 2026 Mar 25 10:28:40 | 17.4942 | 0.00038 | 1.9074 | 320.4215 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 24 18:56 | 2026 Mar 24 08:08:38 | 17.4925 | 0.00038 | 1.9082 | 319.4409 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 23 18:56 | 2026 Mar 23 07:25:38 | 17.4905 | 0.00037 | 1.9089 | 320.0291 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 22 18:56 | 2026 Mar 21 09:02:17 | 17.4872 | 0.00037 | 1.9102 | 318.2698 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 21 19:05 | 2026 Mar 21 09:02:17 | 17.4872 | 0.00037 | 1.9102 | 318.2698 | 142.0703 | 1.00270 | 3.243 |
| 2026 Mar 20 18:57 | 2026 Mar 20 09:27:38 | 17.4853 | 0.00036 | 1.9109 | 318.4848 | 142.0703 | 1.00270 | 3.243 |