| Primary satellite | Secondary satellite |
| Name | Cosmos 1674 | CHUBUSAT 1 |
| Spacetrack catalog number | 15944 | 40300 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 17 10:39 | 2021 Jan 17 18:48 |
| Time of closest approach (UTC) | 2020 Dec 06 08:13:45.931 |
| Minimum distance | 123.022 km |
| Height difference | -1.587 km |
| Relative speed | 2.120 km/s |
| Angle between velocity vectors | 16° |
| Geographic position | 22.3°N, 29.3°E |
| Height | 515 km |
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