TITLE: GCN CIRCULAR NUMBER: 12973 SUBJECT: GRB120219A: Keck Observations DATE: 12/02/20 12:22:23 GMT FROM: Daniel Perley at Caltech D. A. Perley and E. Bellm (Caltech) report: We imaged the location of GRB 120219A (Swenson et al., GCN 12964) with the Keck I telescope (+ LRIS) on 2012-02-20 (UT) between 10:22-10:41 UT. Observations suffered from strong attenuation due to clouds and poor seeing (>2 arcsec). In a stack of our two deepest individual 200 second R-band frames (at 10:27 and 10:32) UT, we detect no source to a limiting magnitude of R > 24.0 mag. The afterglow is also not detected in our g-band or I-band images. If the reported object of Xin et al. (GCN 12966) represents a real source, this apparent fading confirms it as the afterglow of GRB 120219A.