| Primary satellite | Secondary satellite |
| Name | Transit 4A | deb Kosmos-1275 |
| Spacetrack catalog number | 116 | 12653 |
| Radar cross section | medium | medium |
| Epoch of two-line elements (UTC) | 2026 Jan 13 02:20 | 2026 Jan 13 12:56 |
| Time of closest approach (UTC) | 2025 Dec 20 07:13:05.242 |
| Minimum distance | 17.751 km |
| Height difference | -2.225 km |
| Relative speed | 10.954 km/s |
| Angle between velocity vectors | 96° |
| Geographic position | 64.8°S, 16.1°E |
| Height | 981 km |
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