mission to Huya, the spacecraft would have a launch date in November 2027 and use a gravity assist from Jupiter, taking 20 to 25 years to arrive. Gleaves concluded that Huya and were the most feasible targets for the orbiter, as the trajectories required the fewest maneuvers for orbital insertion around either. For a flyby mission to Huya, planetary scientist Amanda Zangari calculated that a spacecraft could take just under 10 years to arrive at Huya using a Jupiter gravity assist, based on a launch date of 2027 or 2032. Huya would be approximately 31 to 37 AU from the Sun when the spacecraft arrives by 2040. Alternative trajectories using gravity assists from Jupiter, Saturn, or Uranus have been also considered. A trajectory using gravity assists from Jupiter and Uranus could take at least 20 years, based a launch date of 2038 or 2039, whereas a trajectory using a gravity assist from Saturn could take over 16 years, based on a later launch date of 2040. Using these alternative trajectories for the spacecraft, Huya would be approximately 37 to 38 AU from the Sun when the spacecraft arrives before 2060. Satellite S/2012 (38628) 1 is the provisional designation for the only known satellite of Huya. It was discovered by a team led by Keith Noll in Hubble Space Telescope observations obtained on 6 May 2012, and confirmed in reexamination of archival Hubble Space Telescope imagery from 30 June and 1 July 2002. The discovery was reported to the International Astronomical Union and was announced on 12 July 2012. Assuming the same albedo as Huya, the satellite is estimated to be about in diameter. From Hubble images of Huya, the satellite's separation distance from the primary is estimated to be at least . Characteristics The satellite is 1.4 magnitudes dimmer than Huya (HV=5.04), giving a visual absolute magnitude of 6.44 for the satellite. The satellite is relatively large compared to Huya, being slightly larger than half the primary's diameter of . The size ratio of the satellite to the primary is 0.525. The large size ratio is analogous to the Pluto–Charon binary system, in which Pluto's large moon Charon is large and massive enough such that the center of mass (barycenter) is located in the space between Charon and Pluto. The Huya system may be in a similar case, although no information about its barycenter is known. With a large size