| Primary satellite | Secondary satellite |
| Name | Cosmos 1603 | METEOR 2-5 DEB |
| Spacetrack catalog number | 15333 | 39603 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 10 02:44 | 2021 Apr 10 02:58 |
| Time of closest approach (UTC) | 2021 Mar 06 22:34:00.059 |
| Minimum distance | 26.363 km |
| Height difference | 2.958 km |
| Relative speed | 14.179 km/s |
| Angle between velocity vectors | 145° |
| Geographic position | 36.9°S, 31.3°W |
| Height | 844 km |
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