Linkage of all the apparitions of comet P/Wolf

We collected 602 astrometric observations from 14 apparitions of comet P/Wolf during the interval 1884–1993. Equations of motion of the comet have been integrated using recurrent power series including all the planetary perturbations. We also took into account nongravitational effects in the comet's motion using Marsden's method, but with the four parameters A, η, I, φ connected with the rotating nucleus of the comet; a precessional motion of the spin axis of the comet's nucleus was taken into account by determining the constant daily change of the angle φ. Thus, it was possible to link all the observations of the comet with the RMS residual equal to 01.65”.