| Primary satellite | Secondary satellite |
| Name | SRMSAT | deb Delta 139 |
| Spacetrack catalog number | 37841 | 12257 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2026 Jan 18 21:58 | 2026 Jan 18 20:26 |
| Time of closest approach (UTC) | 2025 Dec 16 07:14:44.696 |
| Minimum distance | 6.858 km |
| Height difference | 1.553 km |
| Relative speed | 12.607 km/s |
| Angle between velocity vectors | 116° |
| Geographic position | 11.2°S, 105.2°E |
| Height | 860 km |
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