| Primary satellite | Secondary satellite |
| Name | Cosmos 1937 Rocket | Orbcomm 15 |
| Spacetrack catalog number | 19039 | 25415 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 10 09:51 | 2021 Apr 10 12:35 |
| Time of closest approach (UTC) | 2021 Mar 02 14:19:08.242 |
| Minimum distance | 12.340 km |
| Height difference | -0.427 km |
| Relative speed | 6.078 km/s |
| Angle between velocity vectors | 48° |
| Geographic position | 41.1°S, 64.7°W |
| Height | 794 km |
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