Astrometric positions of comet P/Halley

One hundred astrometric positions of comet P/Halley (mostly in the pre-perihelion phase) have been derived from images taken at the Asiago and Merate Observatories. These positions have been used to determine a set of orbital elements for the comet that, although in good agreement with those of IHW Orbit Nr. 45, give smaller residuals.