  This paper presents the results of photometric observations with standard
broad-band Bessel filters B, V, and R on near-Earth asteroid (214088) 2004
JN13. The analysis shows that the B-V and V-R color indices are fairly constant
on the asteroid surface with mean values $B-V = 0.83 \pm 0.02$ mag and $V-R =
0.48 \pm 0.03$ mag, indicative of a relatively homogeneous surface color
distribution. For a typical albedo, assuming these colors indicate an S-type
asteroid, a mean diameter of $2.4 \pm 0.5$ km is inferred.
