| Primary satellite | Secondary satellite |
| Name | Transit 4A | deb Kosmos-1275 |
| Spacetrack catalog number | 116 | 18640 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2026 Jan 13 02:20 | 2026 Jan 12 11:34 |
| Time of closest approach (UTC) | 2025 Dec 17 06:45:31.105 |
| Minimum distance | 43.455 km |
| Height difference | -3.238 km |
| Relative speed | 12.512 km/s |
| Angle between velocity vectors | 117° |
| Geographic position | 59.3°S, 14.3°E |
| Height | 987 km |
|