sidereal

音标发音

Tropical year , and sidereal year are two different concepts .
在即廻歸年與恒星年是不同的兩個概唸。
Unfortunately, here on planet Earth, with its decidedly undecimal sidereal year of 365-and-a-quarter days, that is just not going to happen.
但是不巧的是，在地球這個行星星球上，這種事不會發生，因爲“恒星年（由365又1/4天所組成）是非十進制的”這一事實是確鑿無差的。
And this was the way in which the sidero-solar problem was resolved, for the sidereal position of the full moon is in opposition to the invisible position of the sun.
這個方法之所以得以解決恒星-太陽問題，正是因爲由恒星測定的滿月位置與我們無法看到的太陽位置相反。

If it misses this window, further opportunities occur at intervals of 23 hours and 56 minutes—a period known as a sidereal day.
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