偏心轨道

研究表明，每经过2600万年，这颗星的偏心轨道就将它带到距太阳系1光年的范围内。

The research suggests that , every 26m years , the star 's eccentric orbit brings it within one light year of the solar system .

科学家们已发现明显的迹象表明：太阳有一个小弟弟，它是一颗暗星，其偏心轨道导致彗星群和流星雨周期性降落地球。

Scientists have found compelling evidence that the sun has a baby brother , a dark star whose eccentric orbit is responsible for periodically showering the earth with comets and meteorites .

它非常遥远，特别是它沿偏心轨道运行。

It is very far away particularly in eccentric orbits orbit .

如果吸积发生在偏心轨道，则自转将是正向的，且快慢也合适。

If accretion takes place in eccentric orbits as well , the rotation will be prograde and of the right order of magnitude .

研究小偏心参考轨道航天器编队飞行构形保持与重构控制的工程实现技术。

In this paper , the enabling technique of maintenance and reconfiguration control of spacecraft formation flying is studied .

导航卫星一般采用近圆轨道，当卫星轨道偏心率或者轨道倾角接近于零时，利用GPS卫星开普勒轨道根数拟合卫星广播星历会出现一些问题。

When their orbit eccentricity or inclination are near zero , some problems may occur when the GPS Kepler orbit elements fitting method is applied to fit their broadcast ephemeris parameters .

讨论了143颗早型和125个晚型双星系统轨道偏心率与轨道周期间的关系。

In this paper , we discuss the orbital eccentricity distribution for 143 early-type and 125 late-type binary systems .

该方法不仅能够应用于小偏心率参考轨道情况下的相对轨道设计，而且能够解决大偏心率参考轨道情况下的相对轨道设计问题。

This approach can also be utilized to design relative orbits for reference orbits with not only small but also large eccentricity .

本方法具有以下优点：（1）本方法适用于任意偏心率的卫星轨道。

This method has following advantages : ( 1 ) The method is useful for satellite orbit of any eccentricity .

方法可适用任意偏心率的椭圆轨道，将为飞行器编队飞行的轨道设计提供理论参考。

The proposed method can be used for large eccentricity elliptical orbits and can be applied for orbit design of spacecraft formation flying .

经实测计算表明，观测资料分布较好，该方法对于较大的偏心率和小偏心率轨道计算是可靠和有效的。

The computational results have shown that the orbital determination method is reliable and effective for higher eccentricity and small eccentricity orbit provided the data are well-distributed .