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The magnetic moment---a function of the electric charge form factor$F_{1}(q^{2})$ and the magnetic dipole form factor $F_{2}(q^{2})$ at zerofour-momentum transfer $q^{2}$---of the ground-state $U$-spin =3/2 baryondecuplet $\Delta^{-}$, $\Xi^{*\,-}$, $\Sigma^{*\,-}$ and $\Omega^{-}$ and theirground-state spin 1/2 cousins $p$, $n$, $\Lambda$, $\Sigma^{+}$, $\Sigma^{0}$,$\Sigma^{-}$, $\Xi^{+}$, and $\Xi^{-}$ have been studied for many years with amodicum of success---only the magnetic moment of the $\Omega^{-}$ has beenaccurately determined. In a recent study by us utilizing the infinite momentumframe, we calculated the magnetic moments of the \emph{physical} decuplet$U$-Spin =3/2 quartet members in terms of that of the $\Omega^{-}$ withoutascribing any specific form to their quark structure or intra-quarkinteractions. That study determined $F_{2}(q^{2})$ and was conductednonperturbatively where the decuplet baryon momenta were all collinear. In thisfollow-up research---again utilizing the infinite momentum frame but nowallowing for non-collinear momenta---we are able to determine $F_{1}(q^{2})$where $q^{2}\leq 0$. We relate the electric charge form factor $F_{1}(q^{2})$of the \emph{physical} decuplet $S\neq -3$, $U$-spin =3/2 quartet members tothat of the $\Omega^{-}$ ($S=-3$).

$\Omega^-$, $\Xi^{*-}$, $\Sigma^{*-}}$ and $\Delta^-}$ decuplet baryon electric charge form factor $F_1(q^2)$

$\Omega^-$, $\Xi^{-}$, $\Sigma^{-}}$ and $\Delta^-}$ decuplet baryon electric charge form factor $F_1(q^2)$