  Spherical meteoroids orbiting the Sun experience orbital decay due to the
Poynting-Robertson effect and can become trapped in commensurability resonances
with a planet. Detail conditions for trapping in the planar circular restricted
three-body problem with action of solar electromagnetic radiation on spherical
grain are presented. The results are given in terms of the radiation presure
factor $\beta$.
  In general, the greater value of $\beta$, the shorter capture time in a
resonance. Captures of particles may be even several times longer than it is
presented in literature. Analytical formula for maximum capture times is given.
  Analytical theory for minimal capture eccentricities is presented. The
obtained analytical results differ from those presented in the literature.
However, the known analytical results are not very consistent with our detail
numerical computational results for $\beta-$values 0.01 and 0.05 and for the
planet Earth. Minimum eccentricities for captures into resonances are also
smaller, even in order of magnitude, than the published values.
  The presented results enable comparison with calculations for nonspherical
particles.
