 In December 2006, a first rotational lightcurve of "Siberia" was obtained from photometric observations by astronomers from New Zealand and Australia.Lightcurve analysis gave a rotation period of 21.15 hours with a brightness amplitude of 0.45 magnitude, indicating a non-spherical shape ().While not being a slow rotator, "Siberia" has a longer than average rotation period, especially for its size.