| Primary satellite | Secondary satellite |
| Name | DOVE 4 | deb Kosmos-1538 |
| Spacetrack catalog number | 39430 | 15785 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Mar 05 04:39 | 2021 Mar 04 16:00 |
| Time of closest approach (UTC) | 2021 Jan 18 01:07:36.666 |
| Minimum distance | 4.243 km |
| Height difference | 2.157 km |
| Relative speed | 14.930 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 40.8°S, 178.0°W |
| Height | 710 km |
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