Set7-71 is a massive and extremely hot O-type star with a diameter of approximately 8,500,000 km and surface temperatures exceeding 30,000 K. It is very luminous and young, with a mass about 20 times that of the Sun. The star has a rapid rotation period of roughly 2 Earth days.
The system includes several planets orbiting at significant distances due to the star’s intense radiation and stellar winds. The inner planets are likely rocky but exposed to extreme heat and radiation, while outer gas giants orbit far enough to retain thick atmospheres despite harsh conditions.
Set7-71’s high-energy environment makes it a challenging location for habitability but an interesting system for studying massive star-planet interactions and stellar evolution.