305 Gordonia is a fairly typical, although sizeable Main belt asteroid.
It was discovered by Auguste Charlois on February 16, 1891 in Nice and named after James Gordon Bennett Jr, patron.
The light curve of 305 Gordonia shows a periodicity of 12.89 ± 0.01 hours, during which time the brightness of the object varies by 0.17 ± 0.03 in magnitude.