The transparency of the Solar System to the Oort cloud comets
Astronomical Observatory of the A. Mickiewicz University, Słoneczna 36, 60-286 Poznań, Poland e-mail: dybol@amu.edu.pl
Received:
4
May
2004
Accepted:
7
August
2004
In long-term Monte Carlo simulations of the dynamics of the Oort
cloud planetary perturbations cannot be taken directly into account.
To do this we propose a simple approximation: estimating the Solar
System transparency coefficient P measuring the probability for
a comet to be removed from the cloud by planetary perturbations during
a single perihelion passage. We estimated the value of this coefficient
from the observed and artificial cometary samples. We excluded nongravitational
forces fom our calculations. We obtained 
for inner cloud
comets and 
for the outer and most active part of the
cloud. The dependency of P on the comet observability limit 
is also presented for various cometary samples.
Key words: comets: general / Oort cloud / planets and satellites: general
© ESO, 2004