| Primary satellite | Secondary satellite |
| Name | Cosmos 1937 Rocket | deb Delta |
| Spacetrack catalog number | 19039 | 20029 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 10 09:51 | 2021 Apr 10 11:04 |
| Time of closest approach (UTC) | 2021 Mar 04 13:38:01.518 |
| Minimum distance | 3.981 km |
| Height difference | 0.299 km |
| Relative speed | 10.880 km/s |
| Angle between velocity vectors | 93° |
| Geographic position | 72.3°N, 17.5°E |
| Height | 771 km |
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