| Primary satellite | Secondary satellite |
| Name | DELTA 1 DEB | Cosmos 1603 |
| Spacetrack catalog number | 37638 | 15333 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 20 11:03 | 2024 Dec 22 18:57 |
| Time of closest approach (UTC) | 2024 Dec 28 07:06:20.480 |
| Minimum distance | 2.356 km |
| Height difference | -0.372 km |
| Relative speed | 14.737 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 47.2°S, 134.7°W |
| Height | 849 km |
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