Jupiter is 5.18 times farther than Earth isfrom the sun.Find Jupiter’s orbital in earthyears.Answer in units of year

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Jupiter is 5.18 times farther than Earth is
from the sun.Find Jupiter’s orbital in earth
years.
Answer in units of year

According to Kepler's third law that (R^3)/(T^2)=k=GM/(4π^2),where R stands for the distance between the planet and the sun,T stands for the period,we have such an equation that (T1/T2)^2=(R1/R2)^3,so T1=T2(R1/R2)^1.5=1yearX6.18^1.5=15.36 years
这个数据和实际有出入,实际木星轨道半长轴约为地球轨道半长轴的5.18倍,而不是比地球轨道大5.18倍

可以用那个开普勒第三定律 啊