Syrenya was the fourth planet in the Adonolo star system in the Orion Neutrality Area in the Alpha or the Beta Quadrant. It was the only class M planet in its system, and it had three moons. It was home to an Orion colony. Syrenya was originally a harsh world of stony plains with a carbon dioxide atmosphere. Its parent star, Adonolo,, was a hot blue-white Type B7 sun, so with an axial tilt of 31.2 degrees, temperatures on Syrenya reached 100 °C during summer and dropped to -100 °C in winter. Bacteria and lichens were all that could survive in these conditions.