| Primary satellite | Secondary satellite |
| Name | Cosmos 1400 Rocket | THORAD AGENA D DEB |
| Spacetrack catalog number | 13403 | 42525 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 09 02:06 | 2021 Mar 07 18:22 |
| Time of closest approach (UTC) | 2021 Jan 20 08:36:26.187 |
| Minimum distance | 1.628 km |
| Height difference | 1.444 km |
| Relative speed | 15.220 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 5.6°N, 43.8°W |
| Height | 551 km |
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