| Primary satellite | Secondary satellite |
| Name | Oscar 19 | COSMOS 2251 DEB |
| Spacetrack catalog number | 20442 | 33975 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2023 Dec 05 11:30 | 2023 Dec 04 20:59 |
| Time of closest approach (UTC) | 2023 Sep 24 14:44:46.923 |
| Minimum distance | 95.986 km |
| Height difference | -10.947 km |
| Relative speed | 14.972 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 1.1°S, 158.3°W |
| Height | 781 km |
|