| Primary satellite | Secondary satellite |
| Name | Transit 4A | deb Kosmos-1241 |
| Spacetrack catalog number | 116 | 12151 |
| Radar cross section | medium | medium |
| Epoch of two-line elements (UTC) | 2025 Dec 10 18:24 | 2025 Dec 10 17:38 |
| Time of closest approach (UTC) | 2024 Nov 07 23:09:16.112 |
| Minimum distance | 535.465 km |
| Height difference | 3.885 km |
| Relative speed | 13.406 km/s |
| Angle between velocity vectors | 131° |
| Geographic position | 18.7°N, 21.5°E |
| Height | 972 km |
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