System Data (As at 1 January 2661)
| Orbit (In AUs) | Name | UPP | Remarks | |
| Primary | Sirius A | A1V | ||
| 1.498 | Thule | G500414-B | Research Lab | |
| 4.0 | Nyson | YS00000-0 | ||
| 5.0 | Krupp | GS00266-B N | ||
| 1.848 | Era | G5A0314-A | ||
| 55 | Sela | HS00000-0 | ||
| *2.151 | Sirius Major | AS00916-B N | As Hi Na | |
| 2.199 | Prime Belt | F000916-B N | Research Lab | |
|   | ||||
| Companion | Sirius B | White Dwarf | ||
| 0.515 | Raphael | YBB1000-0 | ||
| 1.315 | Jolsstan | Y6A3000-0 | ||
| 81.28 | Davild | Y100000-0 | ||
| 1.716 | Cherile | Y9A0000-0 | ||
| 2.116 | Shepherd Belt | Y000000-0 | ||
| 2.156 | Little Shepherd | H100317-B | Research Lab |