1. The problem statement, all variables and given/known data a planet is 2.00 a.u. when it is closest to the sun. its eccentricity is .5000. Find its period in years. 2. Relevant equations 3. The attempt at a solution i got this so far... don't know if it is right PD + AD = A -AD - PD = F <SUBTRACTING THESE TWO> 2PD = A - F 2PD = A - (EA) 2PD = A(1-E) 2PD/(1-E) = A A = 2(2)/(1.-.5) A= 8 a.u. then for a a= 8.00/2 a= 4.00 a.u. T^2 = a^3 T = sqrt(a^3) T = 8 im lost T = 8 what? years?