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 |
| 2025 Jul 15 17:56 | 2025 Jul 15 04:55:14 | 11.7878 | 0.00016 | 21.8432 | 204.3868 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 14 17:56 | 2025 Jul 13 12:41:37 | 11.7901 | 0.00016 | 21.8440 | 204.5382 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 13 17:56 | 2025 Jul 12 12:42:34 | 11.7916 | 0.00016 | 21.8445 | 204.6295 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 12 17:56 | 2025 Jul 12 10:59:24 | 11.7917 | 0.00016 | 21.8445 | 204.6662 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 11 17:56 | 2025 Jul 10 12:44:21 | 11.7944 | 0.00016 | 21.8455 | 204.3903 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 10 17:56 | 2025 Jul 10 04:58:44 | 11.7948 | 0.00016 | 21.8456 | 204.4995 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 09 17:56 | 2025 Jul 08 13:23:38 | 11.7973 | 0.00016 | 21.8465 | 203.7248 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 08 17:56 | 2025 Jul 07 12:47:01 | 11.7987 | 0.00016 | 21.8470 | 203.3089 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 07 17:56 | 2025 Jul 06 12:47:55 | 11.8002 | 0.00016 | 21.8475 | 202.7717 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 06 17:56 | 2025 Jul 05 12:55:29 | 11.8016 | 0.00016 | 21.8479 | 202.1168 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 05 17:56 | 2025 Jul 04 14:32:26 | 11.8030 | 0.00016 | 21.8484 | 201.4917 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 04 17:56 | 2025 Jul 03 14:33:17 | 11.8044 | 0.00016 | 21.8489 | 200.7585 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 03 17:56 | 2025 Jul 02 14:34:12 | 11.8059 | 0.00016 | 21.8494 | 200.0577 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 02 17:56 | 2025 Jul 02 12:15:07 | 11.8060 | 0.00016 | 21.8494 | 199.9374 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jul 01 17:56 | 2025 Jun 30 12:21:40 | 11.8089 | 0.00016 | 21.8504 | 198.2809 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 30 17:56 | 2025 Jun 30 05:26:10 | 11.8093 | 0.00016 | 21.8505 | 197.9042 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 29 17:56 | 2025 Jun 28 14:37:52 | 11.8116 | 0.00016 | 21.8513 | 196.7078 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 28 17:56 | 2025 Jun 28 02:38:14 | 11.8123 | 0.00016 | 21.8516 | 196.3116 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 27 17:56 | 2025 Jun 26 14:39:40 | 11.8144 | 0.00015 | 21.8523 | 195.3900 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 26 17:56 | 2025 Jun 26 02:29:38 | 11.8151 | 0.00015 | 21.8526 | 195.0699 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 25 17:56 | 2025 Jun 24 12:58:46 | 11.8173 | 0.00015 | 21.8534 | 194.5571 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 24 17:56 | 2025 Jun 23 14:42:36 | 11.8187 | 0.00015 | 21.8539 | 194.3230 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 23 17:56 | 2025 Jun 22 10:16:47 | 11.8203 | 0.00015 | 21.8545 | 194.3855 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 22 17:56 | 2025 Jun 21 14:44:13 | 11.8215 | 0.00014 | 21.8549 | 194.3076 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 21 17:56 | 2025 Jun 21 11:03:00 | 11.8217 | 0.00014 | 21.8550 | 194.4650 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 20 17:57 | 2025 Jun 19 14:45:45 | 11.8244 | 0.00014 | 21.8559 | 194.5514 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 19 17:56 | 2025 Jun 19 09:23:07 | 11.8247 | 0.00014 | 21.8560 | 194.8162 | 38.9440 | 1.00263 | 5.500 |
| 2025 Jun 18 17:56 | 2025 Jun 17 14:45:38 | 11.8272 | 0.00014 | 21.8569 | 195.1272 | 38.9440 | 1.00263 | 5.500 |