| Primary satellite | Secondary satellite |
| Name | CZ-4B R/B | LEMUR 2 ROMACOSTE |
| Spacetrack catalog number | 29093 | 43048 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 18:08 | 2021 Jan 15 14:17 |
| Time of closest approach (UTC) | 2020 Dec 04 16:27:43.476 |
| Minimum distance | 1356.193 km |
| Height difference | -12.177 km |
| Relative speed | 13.939 km/s |
| Angle between velocity vectors | 131° |
| Geographic position | 31.9°N, 19.1°E |
| Height | 424 km |
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