Astronomy & Astrophysics

Table 2: Inflow time (in year) at the heliocentric radius r of the planets.
Planet r(AU) $\alpha$ $t_\nu$ (yr)

Mercury 0.39 10^-2 $3 \times 10^3$

Venus 0.72 10^-4 $5 \times 10^5$

Earth 1.0 10^-4 $7 \times 10^5$

Mars 1.5 10^-4 $1 \times 10^6$

Jupiter 5.2 10^-4 $4 \times 10^6$

Saturn 9.5 10^-4 $7 \times 10^6$

Uranus 19 10^-2 $1 \times 10^5$

Neptune 30 10^-2 $2 \times 10^5$