Orbital elements of COSMOS 2128
| Launched | 11 February 1991 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 21103 |
| 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 Sep 15 17:56 | 2025 Sep 15 06:28:43 | 74.0266 | 0.00141 | 17.6434 | 133.6431 | 226.5793 | 12.51920 | – |
| 2025 Sep 12 17:57 | 2025 Sep 03 01:04:15 | 74.0281 | 0.00143 | 18.7305 | 152.6107 | 226.5793 | 12.51920 | – |
| 2025 Sep 11 17:57 | 2025 Sep 03 01:04:15 | 74.0281 | 0.00143 | 18.7305 | 152.6107 | 226.5793 | 12.51920 | – |
| 2025 Sep 10 17:56 | 2025 Sep 03 01:04:15 | 74.0281 | 0.00143 | 18.7305 | 152.6107 | 226.5793 | 12.51920 | – |
| 2025 Sep 08 17:57 | 2025 Sep 03 01:04:15 | 74.0281 | 0.00143 | 18.7305 | 152.6107 | 226.5793 | 12.51920 | – |
| 2025 Sep 07 17:56 | 2025 Sep 03 01:04:15 | 74.0281 | 0.00143 | 18.7305 | 152.6107 | 226.5793 | 12.51920 | – |
| 2025 Sep 06 20:41 | 2025 Sep 03 01:04:15 | 74.0281 | 0.00143 | 18.7305 | 152.6107 | 226.5793 | 12.51920 | – |
| 2025 Sep 03 17:57 | 2025 Sep 03 01:04:15 | 74.0281 | 0.00143 | 18.7305 | 152.6107 | 226.5793 | 12.51920 | – |
| 2025 Sep 02 17:56 | 2025 Aug 27 21:24:28 | 74.0294 | 0.00144 | 19.2776 | 161.8789 | 226.5793 | 12.51920 | – |
| 2025 Sep 01 17:56 | 2025 Aug 27 21:24:28 | 74.0294 | 0.00144 | 19.2776 | 161.8789 | 226.5793 | 12.51920 | – |
| 2025 Aug 31 17:56 | 2025 Aug 27 21:24:28 | 74.0294 | 0.00144 | 19.2776 | 161.8789 | 226.5793 | 12.51920 | – |
| 2025 Aug 30 17:56 | 2025 Aug 27 21:24:28 | 74.0294 | 0.00144 | 19.2776 | 161.8789 | 226.5793 | 12.51920 | – |
| 2025 Aug 29 17:56 | 2025 Aug 27 21:24:28 | 74.0294 | 0.00144 | 19.2776 | 161.8789 | 226.5793 | 12.51920 | – |
| 2025 Aug 28 17:57 | 2025 Aug 27 21:24:28 | 74.0294 | 0.00144 | 19.2776 | 161.8789 | 226.5793 | 12.51920 | – |
| 2025 Aug 27 17:56 | 2025 Aug 23 06:10:52 | 74.0304 | 0.00145 | 19.6896 | 168.8686 | 226.5793 | 12.51920 | – |
| 2025 Aug 26 17:56 | 2025 Aug 23 06:10:52 | 74.0304 | 0.00145 | 19.6896 | 168.8686 | 226.5793 | 12.51920 | – |
| 2025 Aug 25 17:56 | 2025 Aug 23 06:10:52 | 74.0304 | 0.00145 | 19.6896 | 168.8686 | 226.5793 | 12.51920 | – |
| 2025 Aug 24 17:56 | 2025 Aug 23 06:10:52 | 74.0304 | 0.00145 | 19.6896 | 168.8686 | 226.5793 | 12.51920 | – |
| 2025 Aug 23 17:56 | 2025 Aug 23 06:10:52 | 74.0304 | 0.00145 | 19.6896 | 168.8686 | 226.5793 | 12.51920 | – |
| 2025 Aug 22 17:56 | 2025 Aug 17 15:56:32 | 74.0315 | 0.00146 | 20.1869 | 177.2012 | 226.5793 | 12.51920 | – |
| 2025 Aug 20 17:56 | 2025 Aug 17 15:56:32 | 74.0315 | 0.00146 | 20.1869 | 177.2012 | 226.5793 | 12.51920 | – |