| Primary satellite | Secondary satellite |
| Name | Cosmos 841 Rocket | Landsat 2 Rocket |
| Spacetrack catalog number | 9023 | 9040 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 16 12:52 | 2021 Jan 15 16:15 |
| Time of closest approach (UTC) | 2020 Dec 01 19:02:25.665 |
| Minimum distance | 14.242 km |
| Height difference | -0.309 km |
| Relative speed | 14.394 km/s |
| Angle between velocity vectors | 150° |
| Geographic position | 69.9°S, 158.8°E |
| Height | 792 km |
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