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Lightcurves of the asteroid 1572 Posnania were obtained at six observatories on 19 nights during four apparitions: in 1993, 1994-95, 1996, and 1999. The synodical period is found to be 8.048 hours and the observed amplitudes of brightness variations are in the range of 0.37-0.40 mag. The sense of rotation is retrograde with a sidereal period $P_{\rm sid} = 0.3353931 \pm 0.3$ days. The ecliptic coordinates of the pole of this asteroid are $\lambda_{\mathrm p} = 46^{\circ} \pm 6^{\circ}$ and $\beta_{\mathrm p} = -65^{\circ} \pm 5^{\circ}$. The shape of Posnania can be approximated by a triaxial ellipsoid model with semiaxes ratios $a/b = 1.35 \pm 0.01$ and $b/c = 1.04 \pm 0.03$.

CCD photometry, spin and shape model of the asteroid 1572 Posnania