TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2876 SUBJECT: GRB041219: Confirmed NIR Afterglow DATE: 04/12/19 17:45:16 GMT FROM: S. Bradley Cenko at Caltech Dae-Sik Moon, S. Bradley Cenko (Caltech), and Joe Adams (Cornell) report on behalf of the Caltech-NRAO-Carnegie GRB Collaboration: "We have imaged the field of GRB041219 with the Wide Field Infrared Camera (WIRC) on the Palomar 200-inch Hale Telescope. We can confirm the presence of a fading source at the position reported by Blake and Bloom (GCN 2870). Our K_s magnitudes (with reference to the 2MASS catalog) are as follows: UT (Dec 19) t_burst K_s Magnitude ---------------------------------------------------- 02:31:52 0.8 h 14.9 03:16:01 1.55 h 15.5 This corresponds to a decay index of ~ 0.8"