[填空题]
The asteroid Icarus,7ja3tgf gf4v t4 6wlhw wz689t though only a few hundred meted8iphxot 2or3wc sa78-5+ gg frs across, orbits the Sun like the planets. 87gotp8of5ac r +x 32hwgids- Its period is 410 d. What is its mean distance from the Sun? $\times 10^{11}$
