  A new asteroid rotation period survey have been carried out by using the
Palomar Transient Factory (PTF). Twelve consecutive PTF fields, which covered
an area of 87 deg$^2$ in the ecliptic plane, were observed in $R$ band with a
cadence of $\sim$20 min during February 15--18, 2013. We detected 2500 known
asteroids with a diameter range of 0.5 km $\leq D \leq$ 200 km. Of these, 313
objects had highly reliable rotation periods and exhibited the "spin barrier"
at $\sim2$ hours. In contrast to the flat spin rate distribution of the
asteroids with 3 km $\leq D \leq$ 15 km shown by Pravec et al. (2008), our
results deviated somewhat from a Maxwellian distribution and showed a decrease
at the spin rate greater than 5 rev/day. One super-fast-rotator candidate and
two possible binary asteroids were also found in this work.
