| Primary satellite | Secondary satellite |
| Name | Cosmos 2150 Rocket | CSL-04 DEB |
| Spacetrack catalog number | 21419 | 26236 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 20 04:34 | 2021 Jan 19 17:09 |
| Time of closest approach (UTC) | 2020 Dec 03 22:46:30.167 |
| Minimum distance | 3.675 km |
| Height difference | 0.017 km |
| Relative speed | 14.725 km/s |
| Angle between velocity vectors | 166° |
| Geographic position | 57.4°S, 62.9°E |
| Height | 829 km |
|