| Primary satellite | Secondary satellite |
| Name | Cosmos 2026 Rocket | THORAD AGENA D DEB |
| Spacetrack catalog number | 20046 | 42521 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 19:59 | 2021 Jan 14 13:50 |
| Time of closest approach (UTC) | 2020 Nov 28 14:19:43.450 |
| Minimum distance | 3.054 km |
| Height difference | -2.993 km |
| Relative speed | 14.698 km/s |
| Angle between velocity vectors | 177° |
| Geographic position | 11.5°N, 162.4°E |
| Height | 990 km |
|