38628 Huya is a trans-Neptunian object (TNO). It is a plutino, being in a 2:3 mean motion resonance with Neptune. With an old Spitzer size estimate of 532 ± 25 km, it was a dwarf planet candidate (icy trans-Neptunian objects with a diameter above around 400 km are expected to be spherical) although the IAU has never classified it as such. Light-curve-amplitude analysis, which shows only small deviations, suggests that it is likely a spheroid with small albedo spots. Tancredi (2010) thinks that Huya is a very probable plutoid.
It was discovered in March 2000 by Ignacio Ferrin and announced on 24 October 2000. It was assigned the name Huya, after Juyá, the Wayuu rain god, in August 2003 by the International Astronomical Union (IAU).