| Primary satellite | Secondary satellite |
| Name | Spot 2 | deb Delta 139 |
| Spacetrack catalog number | 20436 | 12279 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 10 12:13 | 2021 Apr 10 13:52 |
| Time of closest approach (UTC) | 2021 Mar 04 22:18:39.088 |
| Minimum distance | 80.624 km |
| Height difference | 1.395 km |
| Relative speed | 13.568 km/s |
| Angle between velocity vectors | 128° |
| Geographic position | 69.0°S, 41.4°W |
| Height | 659 km |
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