| Primary satellite | Secondary satellite |
| Name | UNAMSat | COSMOS 1275 DEB |
| Spacetrack catalog number | 24305 | 42233 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Mar 07 10:04 | 2021 Mar 07 08:44 |
| Time of closest approach (UTC) | 2021 Jan 21 11:58:25.064 |
| Minimum distance | 9.771 km |
| Height difference | -3.800 km |
| Relative speed | 13.038 km/s |
| Angle between velocity vectors | 124° |
| Geographic position | 75.0°N, 173.3°W |
| Height | 1000 km |
|