| Primary satellite | Secondary satellite |
| Name | SL-08 R/B | deb Kosmos-1375 |
| Spacetrack catalog number | 27819 | 17108 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 22 10:35 | 2021 Apr 22 10:33 |
| Time of closest approach (UTC) | 2021 Mar 06 17:19:16.676 |
| Minimum distance | 67.520 km |
| Height difference | 2.424 km |
| Relative speed | 4.247 km/s |
| Angle between velocity vectors | 33° |
| Geographic position | 55.1°S, 133.9°W |
| Height | 971 km |
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