  (abridged abstract) We present multi-epoch high-resolution spectroscopy and
photoelectric polarimetry of the long-period polar (AM Herculis star) QQ Vul.
The blue emission lines show several distinct components, the sharpest of which
can unequivocally be assigned to the illuminated hemisphere of the secondary
star and used to trace its orbital motion. This narrow emission line can be
used in combination with NaI-absorption lines from the photosphere of the
companion to build a stable long-term ephemeris for the star: inferior
conjunction of the companion occurs at HJD = 2448446.4710(5) + E
0.15452011(11).
