| Primary satellite | Secondary satellite |
| Name | Oscar 19 | COSMOS 2251 DEB |
| Spacetrack catalog number | 20442 | 34678 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2023 Dec 05 11:30 | 2023 Dec 05 14:05 |
| Time of closest approach (UTC) | 2023 Sep 25 19:42:53.241 |
| Minimum distance | 17.595 km |
| Height difference | 2.162 km |
| Relative speed | 14.354 km/s |
| Angle between velocity vectors | 148° |
| Geographic position | 72.0°S, 24.1°W |
| Height | 800 km |
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