Orbital elements of USA 18
| Launched | 8 February 1986 |
| Flight ended | – |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 16631 |
| 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 |
| 2024 Dec 21 18:53 | 2024 Dec 16 02:42:30 | 63.2907 | 0.08295 | 8.1764 | 101.7514 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 20 18:53 | 2024 Dec 16 02:42:30 | 63.2907 | 0.08295 | 8.1764 | 101.7514 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 19 18:53 | 2024 Dec 16 02:42:30 | 63.2907 | 0.08295 | 8.1764 | 101.7514 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 18 18:53 | 2024 Dec 16 02:42:30 | 63.2907 | 0.08295 | 8.1764 | 101.7514 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 17 18:53 | 2024 Dec 16 02:42:30 | 63.2907 | 0.08295 | 8.1764 | 101.7514 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 16 18:54 | 2024 Dec 16 02:42:30 | 63.2907 | 0.08295 | 8.1764 | 101.7514 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 14 18:53 | 2024 Dec 05 14:13:40 | 63.2900 | 0.08314 | 10.1161 | 101.5542 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 13 18:53 | 2024 Dec 05 14:13:40 | 63.2900 | 0.08314 | 10.1161 | 101.5542 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 12 18:53 | 2024 Dec 05 14:13:40 | 63.2900 | 0.08314 | 10.1161 | 101.5542 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 11 18:53 | 2024 Dec 05 14:13:40 | 63.2900 | 0.08314 | 10.1161 | 101.5542 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 10 18:53 | 2024 Dec 05 14:13:40 | 63.2900 | 0.08314 | 10.1161 | 101.5542 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 09 18:53 | 2024 Dec 05 14:13:40 | 63.2900 | 0.08314 | 10.1161 | 101.5542 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 08 18:56 | 2024 Dec 05 14:13:40 | 63.2900 | 0.08314 | 10.1161 | 101.5542 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 07 18:57 | 2024 Dec 05 14:13:40 | 63.2900 | 0.08314 | 10.1161 | 101.5542 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 06 18:53 | 2024 Dec 05 14:13:40 | 63.2900 | 0.08314 | 10.1161 | 101.5542 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 05 18:54 | 2024 Dec 05 14:13:40 | 63.2900 | 0.08314 | 10.1161 | 101.5542 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 04 18:54 | 2024 Nov 30 00:07:10 | 63.2890 | 0.08325 | 11.1459 | 101.4453 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 03 18:54 | 2024 Nov 30 00:07:10 | 63.2890 | 0.08325 | 11.1459 | 101.4453 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 02 18:54 | 2024 Nov 30 00:07:10 | 63.2890 | 0.08325 | 11.1459 | 101.4453 | 267.7711 | 13.78499 | 6.743 |
| 2024 Dec 01 19:13 | 2024 Nov 30 00:07:10 | 63.2890 | 0.08325 | 11.1459 | 101.4453 | 267.7711 | 13.78499 | 6.743 |
| 2024 Nov 30 18:53 | 2024 Nov 30 00:07:10 | 63.2890 | 0.08325 | 11.1459 | 101.4453 | 267.7711 | 13.78499 | 6.743 |
| 2024 Nov 29 18:54 | 2024 Nov 24 16:57:16 | 63.2902 | 0.08336 | 12.1219 | 101.3455 | 267.7711 | 13.78499 | 6.743 |
| 2024 Nov 28 18:54 | 2024 Nov 24 16:57:16 | 63.2902 | 0.08336 | 12.1219 | 101.3455 | 267.7711 | 13.78499 | 6.743 |
| 2024 Nov 27 18:53 | 2024 Nov 24 16:57:16 | 63.2902 | 0.08336 | 12.1219 | 101.3455 | 267.7711 | 13.78499 | 6.743 |
| 2024 Nov 26 18:53 | 2024 Nov 24 16:57:16 | 63.2902 | 0.08336 | 12.1219 | 101.3455 | 267.7711 | 13.78499 | 6.743 |
| 2024 Nov 25 18:53 | 2024 Nov 24 16:57:16 | 63.2902 | 0.08336 | 12.1219 | 101.3455 | 267.7711 | 13.78499 | 6.743 |
| 2024 Nov 24 18:53 | 2024 Nov 19 02:47:55 | 63.2898 | 0.08347 | 13.1512 | 101.2370 | 267.7711 | 13.78499 | 6.743 |