Seeker

By Jack McDevitt

Book 3 of the Alex Benedict Series

Buy from Amazon Thousands of years after the unsolved disappearance of an entire colony, antiquities dealer Alex Benedict stumbles upon a cup that appears to be from the Seeker, one of the colony's original ships, and, while attempting to estable the artifact's provenance, follows a trail that leads to the abandoned ship. https://en.wikipedia.org/wiki/Seeker_(McDevitt_novel)