| Primary satellite | Secondary satellite |
| Name | Transit 4A | deb Kosmos-970 |
| Spacetrack catalog number | 116 | 10578 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Mar 07 13:18 | 2021 Mar 07 13:18 |
| Time of closest approach (UTC) | 2021 Jan 23 10:11:21.552 |
| Minimum distance | 17.633 km |
| Height difference | -1.780 km |
| Relative speed | 9.086 km/s |
| Angle between velocity vectors | 76° |
| Geographic position | 59.5°S, 68.3°E |
| Height | 926 km |
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