C/2000 WM1 (LINEAR). An apparently asteroidal 17.8th mag object  reported by LINEAR team  on December 16.07. The available positions allowed the Central Bureau for Astronomical Telegrams  to determine a rough orbit, which, in turn, allowed them to link these observations to another LINEAR object detected on November 16 and 18.An observations of comet 200WM1 by, T. B. Spahr (Smithsonian Astrophysical Observatory, 1.2m reflector at Mt. Hopkins)  on December 20.148 shows the object to  have a 10" coma and a broad, faint tail extending 10-20 arcsec PA 45°. IAUC (7546), the object was really a comet.

CCD Images ( Telescope 20-cm +CCD ST9)