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 Apr 21 17:57 | 2026 Apr 21 07:33:55 | 51.6287 | 0.00044 | 14.3864 | 322.5027 | 37.5659 | 15.58900 | – |
| 2026 Apr 20 17:57 | 2026 Apr 20 00:47:39 | 51.6288 | 0.00043 | 14.8155 | 316.4091 | 37.5659 | 15.58900 | – |
| 2026 Apr 19 17:58 | 2026 Apr 18 13:24:19 | 51.6290 | 0.00042 | 15.3091 | 309.6952 | 37.5659 | 15.58900 | – |
| 2026 Apr 18 17:56 | 2026 Apr 17 17:24:08 | 51.6288 | 0.00041 | 15.5881 | 305.2412 | 37.5659 | 15.58900 | – |
| 2026 Apr 16 17:57 | 2026 Apr 15 16:09:42 | 51.6281 | 0.00039 | 16.2747 | 295.6858 | 37.5659 | 15.58900 | – |
| 2026 Apr 14 17:57 | 2026 Apr 14 09:23:07 | 51.6277 | 0.00038 | 16.7039 | 288.9660 | 37.5659 | 15.58900 | – |
| 2026 Apr 13 17:57 | 2026 Apr 12 17:22:28 | 51.6279 | 0.00038 | 17.2618 | 281.1810 | 37.5659 | 15.58900 | – |
| 2026 Apr 12 17:57 | 2026 Apr 12 11:13:08 | 51.6278 | 0.00037 | 17.3476 | 279.3430 | 37.5659 | 15.58900 | – |
| 2026 Apr 11 17:57 | 2026 Apr 11 10:35:44 | 51.6281 | 0.00037 | 17.6909 | 273.2562 | 37.5659 | 15.58900 | – |
| 2026 Apr 10 17:58 | 2026 Apr 09 20:07:12 | 51.6283 | 0.00036 | 18.2272 | 265.6183 | 37.5659 | 15.58900 | – |
| 2026 Apr 09 18:01 | 2026 Apr 08 11:47:55 | 51.6285 | 0.00035 | 18.6776 | 257.3440 | 37.5659 | 15.58900 | – |
| 2026 Apr 08 17:57 | 2026 Apr 08 05:38:31 | 51.6285 | 0.00035 | 18.7634 | 256.1201 | 37.5659 | 15.58900 | – |
| 2026 Apr 07 17:57 | 2026 Apr 06 19:46:45 | 51.6284 | 0.00035 | 19.2354 | 248.4030 | 37.5659 | 15.58900 | – |
| 2026 Apr 06 17:57 | 2026 Apr 05 20:41:24 | 51.6286 | 0.00034 | 19.5570 | 242.5355 | 37.5659 | 15.58900 | – |
| 2026 Apr 05 17:56 | 2026 Apr 05 06:50:09 | 51.6286 | 0.00034 | 19.7501 | 238.8669 | 37.5659 | 15.58900 | – |
| 2026 Apr 04 17:57 | 2026 Apr 03 20:58:08 | 51.6281 | 0.00032 | 20.2220 | 230.6102 | 37.5659 | 15.58900 | – |
| 2026 Apr 03 17:56 | 2026 Apr 03 04:02:04 | 51.6284 | 0.00031 | 20.4579 | 227.1733 | 37.5659 | 15.58900 | – |
| 2026 Apr 02 18:03 | 2026 Apr 01 21:14:34 | 51.6290 | 0.00031 | 20.8867 | 220.5371 | 37.5659 | 15.58900 | – |
| 2026 Mar 31 17:57 | 2026 Mar 30 23:03:07 | 51.6299 | 0.00030 | 21.5299 | 209.9904 | 37.5659 | 15.58900 | – |
| 2026 Mar 30 17:58 | 2026 Mar 29 22:24:55 | 51.6302 | 0.00031 | 21.8729 | 205.1943 | 37.5659 | 15.58900 | – |
| 2026 Mar 29 17:57 | 2026 Mar 28 23:19:03 | 51.6302 | 0.00030 | 22.1945 | 200.7419 | 37.5659 | 15.58900 | – |
| 2026 Mar 28 18:57 | 2026 Mar 28 06:22:42 | 51.6303 | 0.00029 | 22.4303 | 197.4506 | 37.5659 | 15.58900 | – |
| 2026 Mar 27 18:57 | 2026 Mar 27 02:39:31 | 51.6307 | 0.00029 | 22.8161 | 191.8140 | 37.5659 | 15.58900 | – |
| 2026 Mar 26 18:57 | 2026 Mar 26 00:28:36 | 51.6300 | 0.00032 | 23.1805 | 183.4701 | 37.5659 | 15.58900 | – |
| 2026 Mar 25 18:56 | 2026 Mar 25 10:36:54 | 51.6301 | 0.00032 | 23.3733 | 180.1942 | 37.5659 | 15.58900 | – |