Count: 0 — No IAU‑approved or well‑established traditional star proper names begin with the letter Q. Note the thematic field is stellar nomenclature and cataloguing, and the authoritative references for this work are the IAU Name List, SIMBAD, Gaia EDR3, the Bright Star Catalogue, and NASA pages. Use those sources when compiling proper names; the IAU list is the primary inclusion criterion and it contains no entries that start with Q, which makes this letter empty for proper star names.

Explain why this criterion yields no results. Recognize that most traditional star names come from Arabic, Greek, or Latin roots, where the letter Q rarely appears as an initial letter in Latinized forms. Apply the IAU’s strict naming and approval process, which prevents ad hoc or survey designations from qualifying as proper names. Note that related identifiers that do start with Q do exist — for example, survey or catalog labels (exoplanet hosts like survey codes), variable‑star letter designations that use single letters such as Q, and minor‑planet names — but these are not IAU‑approved proper names for stars. Broaden your search to catalog IDs, variable‑star names, or names that contain the letter q elsewhere if you need items that resemble the letter Q, and consult the IAU list, SIMBAD, Gaia EDR3, and the Bright Star Catalogue for authoritative data.