| Primary satellite | Secondary satellite |
| Name | Transit 2A | Kosmos-514 |
| Spacetrack catalog number | 45 | 6148 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2021 Feb 27 18:25 | 2021 Feb 27 17:57 |
| Time of closest approach (UTC) | 2021 Jan 22 03:18:31.440 |
| Minimum distance | 9.528 km |
| Height difference | 3.111 km |
| Relative speed | 14.004 km/s |
| Angle between velocity vectors | 146° |
| Geographic position | 26.3°S, 19.0°W |
| Height | 966 km |
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