Urodelus is an eclipsing binary, whose brightness dips twice over a period of approximately 39.5 days. The primarygiantstar has a hot main sequence companion that completes an orbit over this period, and that orbit is aligned so that it intersects with the primary, as seen from Earth. When the two starseclipse one another, twice per orbit of the companion, the magnitude of the entire system is briefly reduced, and reaches +4.23 at its minimum.
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