Orbital elements of RADUGA 21
| Launched | 9 December 1987 |
| Flight ended | – |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 18631 |
| 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 |
| 2023 Jun 06 17:55 | 2023 Jun 05 10:42:07 | 12.8961 | 0.00043 | 22.2378 | 136.6628 | 215.0917 | 1.00357 | 5.500 |
| 2023 Jun 05 17:55 | 2023 Jun 04 12:18:42 | 12.8974 | 0.00043 | 22.2384 | 136.5677 | 215.0917 | 1.00357 | 5.500 |
| 2023 Jun 04 17:57 | 2023 Jun 03 10:30:26 | 12.8989 | 0.00043 | 22.2390 | 136.5008 | 215.0917 | 1.00357 | 5.500 |
| 2023 Jun 03 17:59 | 2023 Jun 02 11:25:42 | 12.9003 | 0.00043 | 22.2395 | 136.4151 | 215.0917 | 1.00357 | 5.500 |
| 2023 Jun 02 17:56 | 2023 Jun 02 11:25:42 | 12.9003 | 0.00043 | 22.2395 | 136.4151 | 215.0917 | 1.00357 | 5.500 |
| 2023 Jun 01 17:58 | 2023 May 31 11:58:01 | 12.9031 | 0.00043 | 22.2406 | 136.2132 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 31 17:57 | 2023 May 31 03:06:38 | 12.9036 | 0.00043 | 22.2408 | 136.1552 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 30 17:56 | 2023 May 29 11:47:38 | 12.9060 | 0.00043 | 22.2417 | 135.9111 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 29 17:56 | 2023 May 28 23:45:04 | 12.9068 | 0.00043 | 22.2420 | 135.7170 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 28 17:56 | 2023 May 27 11:37:20 | 12.9090 | 0.00043 | 22.2428 | 135.3674 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 27 17:55 | 2023 May 26 11:32:03 | 12.9104 | 0.00043 | 22.2433 | 135.0354 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 26 17:58 | 2023 May 24 10:52:54 | 12.9134 | 0.00043 | 22.2445 | 134.3616 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 25 17:57 | 2023 May 24 10:52:54 | 12.9134 | 0.00043 | 22.2445 | 134.3616 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 24 17:57 | 2023 May 24 10:52:54 | 12.9134 | 0.00043 | 22.2445 | 134.3616 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 23 17:57 | 2023 May 22 12:54:29 | 12.9162 | 0.00043 | 22.2455 | 133.7185 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 22 17:57 | 2023 May 22 00:51:52 | 12.9169 | 0.00043 | 22.2458 | 133.4996 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 21 17:55 | 2023 May 20 00:41:32 | 12.9198 | 0.00043 | 22.2469 | 132.9233 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 20 17:56 | 2023 May 19 12:38:57 | 12.9206 | 0.00043 | 22.2471 | 132.8698 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 19 17:57 | 2023 May 18 12:13:35 | 12.9220 | 0.00042 | 22.2477 | 132.6410 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 18 17:56 | 2023 May 17 12:28:35 | 12.9234 | 0.00042 | 22.2482 | 132.3845 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 17 17:56 | 2023 May 17 00:25:57 | 12.9241 | 0.00042 | 22.2485 | 132.2402 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 16 17:55 | 2023 May 15 14:01:02 | 12.9261 | 0.00042 | 22.2493 | 132.0442 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 15 17:56 | 2023 May 14 13:55:45 | 12.9275 | 0.00041 | 22.2498 | 131.9114 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 14 17:56 | 2023 May 13 13:50:30 | 12.9288 | 0.00041 | 22.2504 | 131.8304 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 13 17:57 | 2023 May 12 13:45:09 | 12.9302 | 0.00041 | 22.2509 | 131.8066 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 12 17:56 | 2023 May 11 01:29:42 | 12.9323 | 0.00041 | 22.2518 | 131.9065 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 11 17:58 | 2023 May 10 13:34:35 | 12.9330 | 0.00041 | 22.2521 | 131.8952 | 215.0917 | 1.00357 | 5.500 |
| 2023 May 10 17:55 | 2023 May 08 14:18:37 | 12.9357 | 0.00041 | 22.2532 | 131.9594 | 215.0917 | 1.00357 | 5.500 |