| Primary satellite | Secondary satellite |
| Name | Transit 4A | Radcal |
| Spacetrack catalog number | 116 | 22698 |
| Radar cross section | medium | medium |
| Epoch of two-line elements (UTC) | 2025 May 14 01:44 | 2025 May 13 21:11 |
| Time of closest approach (UTC) | 2025 Apr 19 16:45:52.464 |
| Minimum distance | 2.889 km |
| Height difference | -2.496 km |
| Relative speed | 12.756 km/s |
| Angle between velocity vectors | 119° |
| Geographic position | 63.0°S, 15.8°W |
| Height | 901 km |
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