| Primary satellite | Secondary satellite |
| Name | CZ-4B R/B | deb Kosmos-1275 |
| Spacetrack catalog number | 27432 | 12669 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 05 19:15 | 2021 Mar 05 20:14 |
| Time of closest approach (UTC) | 2021 Jan 19 01:52:48.904 |
| Minimum distance | 48.487 km |
| Height difference | -0.628 km |
| Relative speed | 14.267 km/s |
| Angle between velocity vectors | 149° |
| Geographic position | 80.7°N, 140.7°E |
| Height | 894 km |
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