Orbital elements of DUPLEX
| Launched | 19 November 1998 |
| Flight ended | – |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | United States |
| NORAD ID | 66906 |
| 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 Jan 20 19:06 | 2026 Jan 20 04:16:49 | 51.6319 | 0.00023 | 20.7648 | 35.3914 | 324.7225 | 15.52751 | – |
| 2026 Jan 19 18:57 | 2026 Jan 19 05:06:38 | 51.6322 | 0.00021 | 21.0850 | 31.9187 | 324.7225 | 15.52751 | – |
| 2026 Jan 18 18:57 | 2026 Jan 17 20:40:17 | 51.6322 | 0.00021 | 21.5332 | 26.6605 | 324.7225 | 15.52751 | – |
| 2026 Jan 17 18:56 | 2026 Jan 17 03:40:43 | 51.6322 | 0.00022 | 21.7681 | 23.5991 | 324.7225 | 15.52751 | – |
| 2026 Jan 16 18:57 | 2026 Jan 16 01:25:00 | 51.6323 | 0.00023 | 22.1309 | 18.8611 | 324.7225 | 15.52751 | – |
| 2026 Jan 15 18:56 | 2026 Jan 15 06:52:42 | 51.6321 | 0.00022 | 22.3870 | 15.3034 | 324.7225 | 15.52751 | – |
| 2026 Jan 13 18:56 | 2026 Jan 13 14:42:38 | 51.6319 | 0.00022 | 22.9420 | 8.8340 | 324.7225 | 15.52751 | – |
| 2026 Jan 11 18:57 | 2026 Jan 11 05:32:45 | 51.6320 | 0.00023 | 23.7316 | 357.1095 | 324.7225 | 15.52751 | – |
| 2026 Jan 10 18:57 | 2026 Jan 09 07:11:33 | 51.6320 | 0.00024 | 0.3718 | 347.8929 | 324.7225 | 15.52751 | – |
| 2026 Jan 09 18:57 | 2026 Jan 09 05:38:51 | 51.6323 | 0.00023 | 0.3931 | 347.7092 | 324.7225 | 15.52751 | – |
| 2026 Jan 08 18:56 | 2026 Jan 08 09:33:36 | 51.6320 | 0.00024 | 0.6705 | 343.3805 | 324.7225 | 15.52751 | – |
| 2026 Jan 07 18:57 | 2026 Jan 05 13:34:03 | 51.6316 | 0.00025 | 1.6093 | 329.0837 | 324.7225 | 15.52751 | – |
| 2026 Jan 06 18:56 | 2026 Jan 05 13:34:03 | 51.6316 | 0.00025 | 1.6093 | 329.0837 | 324.7225 | 15.52751 | – |
| 2026 Jan 05 18:57 | 2026 Jan 05 07:23:09 | 51.6317 | 0.00025 | 1.6947 | 327.9399 | 324.7225 | 15.52751 | – |
| 2026 Jan 04 18:56 | 2026 Jan 04 06:39:33 | 51.6319 | 0.00025 | 2.0360 | 321.4980 | 324.7225 | 15.52751 | – |
| 2026 Jan 03 18:57 | 2026 Jan 03 09:01:22 | 51.6319 | 0.00024 | 2.3347 | 317.1596 | 324.7225 | 15.52751 | – |
| 2026 Jan 01 18:56 | 2026 Jan 01 13:44:51 | 51.6323 | 0.00025 | 2.9320 | 307.6709 | 324.7225 | 15.52751 | – |
| 2025 Dec 31 18:57 | 2025 Dec 31 13:01:02 | 51.6322 | 0.00025 | 3.2732 | 301.5509 | 324.7225 | 15.52751 | – |
| 2025 Dec 30 18:56 | 2025 Dec 30 03:00:39 | 51.6324 | 0.00026 | 3.7424 | 294.5740 | 324.7225 | 15.52751 | – |
| 2025 Dec 29 18:56 | 2025 Dec 29 11:33:10 | 51.6326 | 0.00026 | 3.9556 | 291.4544 | 324.7225 | 15.52751 | – |
| 2025 Dec 28 18:57 | 2025 Dec 28 04:38:05 | 51.6324 | 0.00026 | 4.3822 | 281.7047 | 324.7225 | 15.52751 | – |
| 2025 Dec 27 18:57 | 2025 Dec 27 11:37:45 | 51.6319 | 0.00027 | 4.6168 | 278.8538 | 324.7225 | 15.52751 | – |
| 2025 Dec 26 18:56 | 2025 Dec 26 10:53:34 | 51.6324 | 0.00026 | 4.9580 | 272.6697 | 324.7225 | 15.52751 | – |
| 2025 Dec 25 18:57 | 2025 Dec 25 05:31:02 | 51.6322 | 0.00028 | 5.3631 | 265.4219 | 324.7225 | 15.52751 | – |
| 2025 Dec 24 18:56 | 2025 Dec 23 13:19:00 | 51.6316 | 0.00028 | 5.9174 | 256.8779 | 324.7225 | 15.52751 | – |