This comet was discovered by H.-E. Schuster (European Southern Observatory) on 1975 October 9.16. It was initially simply reported as a "moving object," but Schuster remarked that "Although the object may be a minor planet, it seems to show some fuzziness to the northeast." The magnitude was given as 17. Schuster and R. M. West said a 40-minute exposure with a 100-cm Schmidt telescope on October 14 showed a tail about 20 arc seconds long, thus confirming this object was a comet.
L. D. Schmadel (Astronomisches Rechen-Institut) submitted accurate positions of 8 minor planets found on European Southern Observatory plates obtained in early September. Brian G. Marsden found that one of these objects, photographed on September 5.20, 6.13, and 7.28, was identical to Schuster's comet. He also pointed out that Schuster was the discoverer of this minor planet. The magnitude was given as 17.5. J. Schubart (Astronomisches Rechen-Institut) announced on October 21 that the September 6 image was somewhat diffuse.