| Primary satellite | Secondary satellite |
| Name | NEE 01 PEGASUS | COSMOS 2251 DEB |
| Spacetrack catalog number | 39151 | 36617 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Feb 25 18:14 | 2021 Feb 23 07:39 |
| Time of closest approach (UTC) | 2021 Jan 31 00:19:04.458 |
| Minimum distance | 29.751 km |
| Height difference | -1.919 km |
| Relative speed | 15.019 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 37.2°N, 6.9°W |
| Height | 626 km |
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