iau

The IAU Time Scales and Reference Systems in the Framework of General Relativity

广义相对论框架中的IAU时间尺度和参考系

Iau ; international Academy for development in freedom ;

国际促进自由发展学会；

Analysis on the General Character Classification Principle of Import-export Goods ; IAU galactic coordinate system

解析国际物流通关时商品归类的共性归类原则国际通用银道坐标系

Primary Constants in IAU 1976 System of Astronomical Constants

IAU1976天文常数系统中的基础常数

First of all , let us look at the approved IAU definition of a planet in our solar system .

首先，让我们重温国际天文联会通过有关太阳系行星的新定义。

The IAU decides the official names of all celestial bodies .

这一联合会确定所有天体的官方名称。

The new IAU planet definition mentions orbits .

国际天文学联合会在行星的新定义中将轨道作为一项衡量标准。

Other Meetings of Interest to IAU Members

国际天文学联合会会员感兴趣的其他会议

On IAU nutation theory

关于IAU章动理论

IAU Symposium No. 134 : Active Galactic Nuclei ( University of California , Santa Cruz , August 15-19 , 1988 )

国际天文联合会学术会议（序号134）：活动星系核（1988年8月15&19日，加利福尼亚大学，桑塔克鲁兹，美国）

VLBI observations of nutations are compared with IAU 1980 nutation series . Their deviations can provide a basis for improving IAU nutation theory .

比较了VLBI章动观测值和IAU1980章动理论值，其差异可为改进章动理论提供依据。

The values of the Earth dynamical flattening , used in IAU 1980 nutation theory , are inconsistent , so that it products an influence on the nutation amplitude .

IAU1980章动理论中采用了一个不一致的地球动力学扁率值，从而影响了章动振幅的计算。

A clear majority of researchers voted for the new definition at a meeting of the International Astronomical Union ( IAU ) in Prague , in the Czech Republic .

在布拉格的召开的国际天文联合会会议上，有明显多数的研究者投票支持这一新规则。

It seems that even if the IAU had kept Pluto 's status as a planet , the classical theory of nine planets in the solar system would have had to be changed , but the other way around .

看来，即使国际天文学联合会依然把冥王星视为一颗行星，太阳系有九颗行星的经典理论也必须改变，但那得是另一番情形。

In response to the demanding of The IAU Working Group " Earth Rotation in the HIPPARCOS Reference Frame " , the observational data of Shanghai Photoelectric Astrolabe since 1974 have been reorganized , and also transferred in machine readable form .

根据IAU重新归算地球自转参数的要求，对上海天文台光电等高仪自1974年以来的观测资料作了重新整理，并录成机器可读的形式。

IAU will adopt the Celestial Intermediate Pole ( CIP ) as the celestial reference pole from 1 January 2003 . The use of NRO in the Celestial Reference System ( CRS ) is designated as the Celestial Ephemeris Origin ( CEO ) .

IAU决定从2003年起采用天球中间极作为天球参考极。