Sidereal: of the stars and their measurements.(星的，恒星的，以恒星為衡量標準的。)

Tropical year , and sidereal year are two different concepts .(在即回歸年與恒星年是不同的兩個概念。)

With its decidedly undecimal sidereal year of 365-and-a-quarter days, that is just not going to happen.(這種事不會發(fā)生，因為“恒星年（由365又1/4天所組成）是十一進制的”這一事實是確鑿無疑的。)

Sidereal age, the distance between they and earth, it is the conclusion that astronomy wants scrupulous to reach.(恒星的年齡，它們與地球之間的距離，都是天文學要一板一眼得出的結論。)

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(fā)生，因為“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。)

Phase modulated resolvers can be used to model the relation between the sidereal time right ascension and the hour angle.(工作在調(diào)相狀態(tài)下的旋轉變壓器可以用其相位模擬恒星時與赤經(jīng)、時角的關系。)

Approximately, a year has 365 solar days but 366 sidereal days. Do you know why.(一年中大約有365個太陽日，但卻有366個恒星日，你知道原因嗎？)

The sidereal diurnal variation of cosmic ray ties up with the most basic and important problem in cosmic ray physics such as the origin, propagation and the acceleration mechanisms of cosmic ray.(宇宙線的恒星日變化緊密聯(lián)系于宇宙線的起源、其傳播途徑的性質(zhì)，以及宇宙線的加速機制等宇宙線物理中最基本的重大問題。)

But in the popular mind, the main difference between the two systems is that Jyotish USES the sidereal zodiac and Western astrology USES the tropical.(但在普遍的思想里，兩者之間主要的不同就是周諦士是使用恒星黃道帶，而西洋占星術是作用熱帶黃道帶。)

A sidereal day is about 4 minutes shorter than a solar day.(一個恒星日比一個太陽日大約短4分鐘。)

The sidereal periods of the planets may be obtained..by observing their passages.