A probe orbiting Venus exerts a gravitational force of 2.58 * 103 N on Venus. Venus has a mass of 4.87 * 1024 kg. The mass of the probe is 655 kilograms.

We are given with the following:

F = 2.58 x 10^3 N

m1 = 4.87 x 10^24 kg

m2 = 655 kg

If we are asked how far is the probe from the center of Venus, we can use the formula:

F = G m1 m2 / r^2

G is the gravitational constant which is equal to 6.67x10^-11 m3 / kg s2

Solving for r:

2.58 x 10^23 = 6.67 x 10^-11 (4.87 x 10^24) (655) / r2

r = 9.08 x 10^6 km