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\section{Methods} \section{Methods & Results}  USNO-A0600-15865535 is a bright ($g= 14.2$) very blue ($g-r = -0.21$) source, unresolved in Pan-STARRS imaging. Through a combination of overoptimism and clerical errors, it was targeted as a quasar candidate behind the circumgalactic medium of M83 in VLT Program ID 097.A-0552(A). The R \sim 25000, high SNR spectra subsequently showed it to have very strong H$\epsilon$ and H$\zeta$ at Milky Way rest frame. Such stars are typically either Blue Horizontal Branch (BHB) stars or Blue Stragglers (BS) stars, though can occasionally be hot main sequence (MS) stars.