He may also have stated the reason: This second inequality appears to be due to light taking some time to reach us from the satellite; light seems to take about ten to eleven minutes a distance equal to the half-diameter of the terrestrial orbit.
他可能也表示出原因： 這第二個不等式似乎是因為光波需要一段時間從衛星傳播至我們；光波似乎需要10至11分鐘來傳播等同於地球繞太陽公轉軌道半徑的距離。