  We report on photometry and high-resolution spectroscopy for IRAS 19285+0517.
The spectral energy distribution based on visible and near-IR photometry and
far-IR fluxes shows that the star is surrounded by dust at a temperature of
$T_{\rm {d}}$ $\sim$ 250 K. Spectral line analysis shows that the star is a K
giant with a projected rotational velocity $v sin i$ = 9 $\pm$ 2 km s$^{-1}$.
We determined the atmospheric parameters: $T_{\rm {eff}}$ = 4500 K, log $g$ =
2.5, $\xi_{t}$ = 1.5 km s$^{-1}$, and [Fe/H] = 0.14 dex. The LTE abundance
analysis shows that the star is Li-rich (log $\epsilon$(Li) = 2.5$\pm$0.15),
but with essentially normal C, N, and O, and metal abundances. Spectral
synthesis of molecular CN lines yields the carbon isotopic ratio
$^{12}$C/$^{13}$C = 9 $\pm$3, a signature of post-main sequence evolution and
dredge-up on the RGB. Analysis of the Li resonance line at 6707 \AA for
different ratios $^{6}$Li/$^{7}$Li shows that the Li profile can be fitted best
with a predicted profile for pure $^{7}$Li. Far-IR excess, large Li abundance,
and rapid rotation suggest that a planet has been swallowed or, perhaps, that
an instability in the RGB outer layers triggered a sudden enrichment of Li and
caused mass-loss.
