astronomical calculation

Li Cheng Biao ( ready reference astronomical table) in ancient calendars was made in order to simplify the calculation of the motion of the sun, the moon and the five planets.

立成表是古历中推算日、月、五星运动时，为简化计算所造的表。

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To make preparation for the future research work, a preliminary coordinate translation formula is deduced according to a Julian Day astronomical calculation system.

根据儒略日天文计算体系得出初步坐标转换公式，并为今后的研究工作做准备。

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How to complete the calculation of sun declination, sun right ascension, sun greenwich hour angle, greenwich hour angle of aries and sun local hour angle in Astronomical Position.

利用计算机完成天文定位中的太阳赤经、赤纬、太阳格林时角、春分点格林时角、测者地方时角的计算。

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The FK5 fundamental catalogue and the new astronomical constants have been used in the astronomical calculation since 1984. These changes will directly effect the results of the polar coordinates with classical optical instruments.

1984年开始，天文计算中采用FK5基本星表和新天文常数，这些变动直接影响了经典光学仪器观测确定的地极坐标。

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The part of astronomical phenomena is worked out by adaptation of the modern adequate astronomy calculation.

天象部分是采用现代天文方法计算得出的,准确可靠.

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