| Primary satellite | Secondary satellite |
| Name | LilacSat-2 | Cosmos 1842 |
| Spacetrack catalog number | 40908 | 17911 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2025 Apr 29 04:14 | 2025 Apr 28 20:21 |
| Time of closest approach (UTC) | 2025 Mar 23 05:28:32.812 |
| Minimum distance | 5.172 km |
| Height difference | 5.056 km |
| Relative speed | 15.287 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 47.3°N, 25.9°E |
| Height | 457 km |
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