| Primary satellite | Secondary satellite |
| Name | Cosmos 1633 Rocket | COSMOS 2523 |
| Spacetrack catalog number | 15593 | 42986 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2025 May 16 07:10 | 2025 May 16 12:04 |
| Time of closest approach (UTC) | 2024 Jun 20 20:44:46.205 |
| Minimum distance | 31.889 km |
| Height difference | 24.273 km |
| Relative speed | 15.050 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 79.8°S, 31.5°E |
| Height | 633 km |
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