| Primary satellite | Secondary satellite |
| Name | NEE 01 PEGASUS | COSMOS 2251 DEB |
| Spacetrack catalog number | 39151 | 37087 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Feb 25 18:14 | 2021 Feb 25 07:39 |
| Time of closest approach (UTC) | 2021 Jan 31 01:46:33.737 |
| Minimum distance | 10.695 km |
| Height difference | -2.234 km |
| Relative speed | 15.106 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 0.9°N, 22.9°W |
| Height | 631 km |
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