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 Nov 02 18:57 | 2025 Nov 02 06:13:21 | 11.6331 | 0.00022 | 21.7905 | 255.7260 | 122.3809 | 1.00312 | 5.500 |
| 2025 Nov 01 18:58 | 2025 Oct 31 17:23:23 | 11.6353 | 0.00022 | 21.7912 | 255.3426 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 31 18:57 | 2025 Oct 31 05:53:44 | 11.6360 | 0.00022 | 21.7915 | 255.1978 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 30 18:57 | 2025 Oct 30 05:35:24 | 11.6375 | 0.00022 | 21.7919 | 254.8173 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 29 18:57 | 2025 Oct 29 06:55:10 | 11.6388 | 0.00023 | 21.7924 | 254.3822 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 28 18:57 | 2025 Oct 27 17:29:11 | 11.6411 | 0.00023 | 21.7931 | 253.6510 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 27 18:57 | 2025 Oct 27 06:24:21 | 11.6418 | 0.00023 | 21.7933 | 253.1818 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 26 18:57 | 2025 Oct 26 11:00:44 | 11.6430 | 0.00023 | 21.7937 | 252.7863 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 25 17:57 | 2025 Oct 25 07:30:51 | 11.6446 | 0.00023 | 21.7942 | 251.9940 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 24 17:57 | 2025 Oct 23 17:35:00 | 11.6470 | 0.00023 | 21.7949 | 251.0129 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 22 17:56 | 2025 Oct 21 17:37:56 | 11.6499 | 0.00023 | 21.7958 | 249.3200 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 21 17:56 | 2025 Oct 20 17:39:25 | 11.6514 | 0.00023 | 21.7963 | 248.4462 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 20 17:56 | 2025 Oct 20 05:40:07 | 11.6521 | 0.00023 | 21.7965 | 247.7386 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 19 17:56 | 2025 Oct 19 07:32:58 | 11.6535 | 0.00023 | 21.7969 | 247.3445 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 18 17:56 | 2025 Oct 18 05:43:02 | 11.6550 | 0.00022 | 21.7974 | 246.6113 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 17 17:56 | 2025 Oct 16 07:28:25 | 11.6578 | 0.00022 | 21.7983 | 245.0396 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 16 17:56 | 2025 Oct 15 17:46:35 | 11.6586 | 0.00022 | 21.7985 | 244.7217 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 15 17:56 | 2025 Oct 14 11:15:37 | 11.6603 | 0.00022 | 21.7991 | 243.4451 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 14 17:56 | 2025 Oct 13 17:49:29 | 11.6614 | 0.00022 | 21.7995 | 243.4161 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 12 17:56 | 2025 Oct 12 05:51:41 | 11.6634 | 0.00022 | 21.8002 | 242.8666 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 11 17:57 | 2025 Oct 10 17:53:52 | 11.6655 | 0.00022 | 21.8009 | 242.4690 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 09 17:56 | 2025 Oct 08 17:56:42 | 11.6683 | 0.00021 | 21.8018 | 242.1201 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 08 17:56 | 2025 Oct 08 07:40:14 | 11.6689 | 0.00021 | 21.8021 | 242.3393 | 122.3809 | 1.00312 | 5.500 |
| 2025 Oct 07 17:56 | 2025 Oct 07 06:36:57 | 11.6704 | 0.00021 | 21.8025 | 242.4100 | 122.3809 | 1.00312 | 5.500 |