The Steering Committee, led by the Committee Chair, is comprised of representatives with a direct interest and stake in the development and success of the Unified Astronomy Thesaurus. The Committee members serve as representatives of the UAT, promoting it to global astronomy and astrophysics, library and publishing communities, developing test cases and increasing its overall use. The Committee members assess the use of the UAT to gain a broader understanding of its role and impact, and use this understanding to represent the interest of the users when assisting with the refining of the UAT. The Curator focus on the development of a professional thesaurus, drawing upon outreach and input from the astronomy community. As the steward and owner of the UAT, the American Astronomical Society (AAS) ensures support for the work of the Curator and Committee and the long term development and success of the thesaurus. The UAT-SC meets monthly by conference call.
| Barbara Kern (Chair) | Director, Science Libraries at the University of Chicago |
| Alberto Accomazzi | Principal Investigator for the NASA Astrophysics Data System |
| Daina Bouquin | Head Librarian at the Center for Astrophysics | Harvard & Smithsonian |
| Sebastien Derriere | Observatoire de Strasbourg |
| Graham McCann | Head of Content and Platform Management for IOP Publishing |
| Jenny Novacescu | Chief Institute Librarian at the Space Telescope Science Institute |
| Julie Steffen | Chief Publishing Officer for the American Astronomical Society |
| Ethan Vishniac | Editor in Chief for the American Astronomical Society |
| Sarah Weissman | Senior Software Engineer at the Space Telescope Science Institute |
| Peter Williams | AAS Innovation Scientist |
| Katie Frey (ex officio) |
Curator of the Unified Astronomy Thesaurus Assistant Head Librarian at the Center for Astrophysics | Harvard & Smithsonian |