Alpha Tirna is a star system with ten planets and twenty-one moons,
| Planets | Moons |
|---|---|
| Tirna I | N/A |
| Tirna II | Tirna II-a |
| Tirna III | Tirna III-a Tirna III-b Tirna III-c |
| Tirna IV | Tirna IV-a |
| Tirna V | N/A |
| Tirna VI | Tirna VI-a Tirna VI-b Tirna VI-c Tirna VI-d Tirna VI-e |
| TIrna VII | Tirna VII-a Tirna VII-b Tirna VII-c |
| Tirna VIII | Tirna VII-a Tirna VIII-b Tirna VIII-c Tirna VIII-d Tirna VIII-e |
| Tirna IX | M/A |
| Tirna X | Tirna X-a Tirna X-b Tirna X-c |