| Primary satellite | Secondary satellite |
| Name | Transit 2A Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 47 | 47070 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Apr 25 04:35 | 2025 Jan 16 03:46 |
| Time of closest approach (UTC) | 2024 Jul 22 08:55:20.269 |
| Minimum distance | 876.060 km |
| Height difference | 61.853 km |
| Relative speed | 13.419 km/s |
| Angle between velocity vectors | 128° |
| Geographic position | 34.1°S, 125.7°W |
| Height | 704 km |
|