Ok, I keep trying to do the following problem: ----The asteroid Icarus orbits the Sun like the other planets. Its period is about 410 days. What is its mean distance from the Sun? (Hint: You can derive the mean distance with the paramters known for the Earth: Period of the earth = 365 days Mean distance from the sum = 1.5e8km)---------------- Ok, so, using Kepler's laws I took 410 days and put it to the (2/3) power...and I got 55.2 AU...one AU (astronomical unit) equals 1.5e8 km...so I multiplied 55.2 by 1.5e8 km and got 8278414420 km....or 8.28e9 km.....but the computer program says I'm wrong. Does anyone know what I'm doing wrong? Thanks.