In November 2005, a rotational lightcurve of Yeungchuchiu was obtained from photometric observations by the discoverer at the Desert Eagle Observatory in Arizona.
Lightcurve analysis gave a well-defined rotation period of 3.450 hours with a brightness variation of 0.70 magnitude (U=3).
The large amplitude suggests that the body is of non-spherical shape and that the long axis is almost twice as long as the short axis.
It is likely that the rotational axis was almost perpendicular to the observation's line-of-sight.
A second lightcurve was obtained at the Palomar Transient Factory in September 2010, and gave a concurring period of 3.4508±0.0003 hours with an amplitude of 0.63 in magnitude (U=2).
In November 2005, a rotational lightcurve of Yeungchuchiu was obtained from photometric observations by the discoverer at the Desert Eagle Observatory in Arizona. Lightcurve analysis gave a well-defined rotation period of 3.450 hours with a brightness variation of 0.70 magnitude (U=3). The large amplitude suggests that the body is of non-spherical shape and that the long axis is almost twice as long as the short axis. It is likely that the rotational axis was almost perpendicular to the observation's line-of-sight. A second lightcurve was obtained at the Palomar Transient Factory in September 2010, and gave a concurring period of 3.4508±0.0003 hours with an amplitude of 0.63 in magnitude (U=2).
19848 Yeungchuchiu