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 Feb 05 18:58 | 2026 Feb 05 11:12:18 | 17.4218 | 0.00043 | 1.9418 | 292.0624 | 252.5216 | 1.00273 | 3.243 |
| 2026 Feb 04 18:57 | 2026 Feb 04 08:50:34 | 17.4202 | 0.00043 | 1.9426 | 290.3037 | 252.5216 | 1.00273 | 3.243 |
| 2026 Feb 03 18:56 | 2026 Feb 02 23:17:37 | 17.4180 | 0.00043 | 1.9436 | 288.0404 | 252.5216 | 1.00273 | 3.243 |
| 2026 Feb 02 18:56 | 2026 Feb 01 23:19:39 | 17.4165 | 0.00043 | 1.9443 | 286.1881 | 252.5216 | 1.00273 | 3.243 |
| 2026 Feb 01 18:56 | 2026 Feb 01 02:22:38 | 17.4151 | 0.00043 | 1.9449 | 284.5873 | 252.5216 | 1.00273 | 3.243 |
| 2026 Jan 31 18:56 | 2026 Jan 31 11:22:55 | 17.4141 | 0.00043 | 1.9453 | 283.4183 | 252.5216 | 1.00273 | 3.243 |
| 2026 Jan 30 18:57 | 2026 Jan 29 23:26:05 | 17.4116 | 0.00043 | 1.9464 | 280.8071 | 252.5216 | 1.00273 | 3.243 |
| 2026 Jan 29 18:56 | 2026 Jan 28 11:29:13 | 17.4092 | 0.00042 | 1.9474 | 278.6395 | 252.5216 | 1.00273 | 3.243 |
| 2026 Jan 28 18:56 | 2026 Jan 27 15:22:20 | 17.4078 | 0.00042 | 1.9480 | 277.6101 | 252.5216 | 1.00273 | 3.243 |
| 2026 Jan 27 18:56 | 2026 Jan 27 12:40:53 | 17.4076 | 0.00042 | 1.9481 | 277.4814 | 252.5216 | 1.00273 | 3.243 |
| 2026 Jan 26 18:57 | 2026 Jan 25 23:34:29 | 17.4050 | 0.00041 | 1.9492 | 275.5717 | 252.5216 | 1.00273 | 3.243 |
| 2026 Jan 25 18:57 | 2026 Jan 24 11:46:38 | 17.4026 | 0.00040 | 1.9503 | 275.1941 | 252.5216 | 1.00273 | 3.243 |
| 2026 Jan 24 18:58 | 2026 Jan 24 11:46:38 | 17.4026 | 0.00040 | 1.9503 | 275.1941 | 252.5216 | 1.00273 | 3.243 |
| 2026 Jan 22 18:56 | 2026 Jan 21 23:43:00 | 17.3986 | 0.00039 | 1.9521 | 279.9760 | 252.5216 | 1.00273 | 3.243 |