Spectral energy distribution of 2P/Encke based on the photometric data of both the COMICS observations and the IRAC observations, corrected to the epoch of the N-band spectroscopic observation by COMICS (UT 2003 November 12.29). The solid line is the best-fit blackbody spectrum (at 337 K) for all observations. The dashed line is the best-fit blackbody spectrum (at 328 K) for the COMICS observations only.