perihelion

But it 's not that simple either , because the dates of the perihelion and aphelion are also shifting .

但这并不是简单的一件事情，因为近日点和远日点的日期都会变换。

When perigee and perihelion coincide tidal range is at its greatest .

当月球与地球到达它们的近地点和近日点的时间恰好重合时，就会引起最大的潮汐。

The Effect of Solar Flattening on the Advance of the Perihelion of Mercury

太阳扁率对水星近日点进动的贡献

The anomalistic year is the time between successive transits of the Earth through the perihelion .

近点年是地球连续两次通过近日点之间的时间。

In 1859 , Le Verrier discovered the mercury perihelion advance anomaly .

在1859年LeVerrier发现了水星近日点进动之异常。

Gravity waves and perihelion deflexion of light

引力波与光线近日偏折

In all this Cuban business there is one man stands out on the horizon of my memory like Mars at perihelion .

在所有与古巴有关的亊情中，有一个人常常令我无法忘怀。

The Runge-Lenz Vector and the Perihelion Precession of Mercury Orbit

Runge-Lenz矢量与水星近日点进动

The point in the orbit nearest the sun is called perihelion , while the point farthest is called aphelion .

在轨道上最接近太阳的点被称为近日点，而最远离太阳的点被称为远日点。

( astronomy ) position of a planet as defined by its angular distance from its perihelion ( as observed from the sun ) .

从太阳观察到的行星距近日点的角度偏差。

Lenz vector and perihelion shift

Lenz矢量和近日点进动率

The results suggest that the meteoroid orbits of ordinary chondrites evolved from perihelion of 1.0 AU to 0.9 AU over the last 50 million years .

在最后50Ma中，普通球粒陨石母体的轨道经历了从1.0AU到0.9AU的演化。

He also figured out the planet goes faster when it 's at perihelion , nearer the sun , than when it 's at aphelion , its farthest distance .

他还计算出地球在近日点（即距离太阳最近的点）比在远日点（即距离太远最远的点）运行得更快。

He also figured out the planet goes faster when it 's at perihelion , nearer the sun , than when it 's at aphelion , its furthest distance .

他还算出这个行星在距离太阳最近的近日点比在距离太阳最远的远日点时运动的速度快。

Although predicting the brightness of comets with any degree of accuracy is very difficult , Hale-Bopp met or exceeded most predictions when it passed perihelion on April 1 , 1997 .

虽然预测彗星在不同角度的亮度是非常困难的，但是当1997年4月1日海尔波普彗星通过近日点时，达到甚至超过了大多数的预测。

During the period of December 1985 to April 1986 , before and after , perihelion passage of Comet ' Halley , Yunnan Observatory performed the Large-scale phenomena observations in Kunming and .

1985年12月至1986年4月哈雷彗星近日点前后，云南天文台分别在昆明和思茅两地进行了大尺度现象观测。

Some meteorites ( ~ 15 % ) have especially low natural TL , suggesting that they have recently been reheated . These may have come to earth on orbits with particularly small perihelion ( < 0.8 AU ) .

一些具有特别低自然TL值的陨石（～15%）表明经历了近期的加热作用，它们可能以特别小的近日距（＜0.8AU）轨道到达地球上。

Perihelion is the point in orbit nearest the parent star , and asteroid 2000 BD19 has the smallest orbit , getting incredibly intimate with the giant , hot ball of nuclear explosions that keeps us warm and alive .

近日点是最接近母恒星的轨道上的点，而序号为2000BD19的小行星拥有最小的轨道，与太阳无限接近。太阳是巨大的伴有核爆炸的火球，它为人类提供了温暖和生命。

Using these equations of motion , we investigate some classical gravitational effects in dilaton spacetime , such as the bending of light rays , the perihelion advance of planet , the delay of radar echo , and the redshifts .

利用这些运动方程，具体考察伸缩子时空的一些经典引力效应&比如光线弯曲，行星进动，雷达波的延迟，以及红移。

Since the perihelion is only . 092 astronomical units - 1 AU is about how far the Earth is from the Sun , on average - HD19 gets hot . Really hot actually , reaching temperatures that could melt zinc and other metals .

因为近日点只有0.092个天文单位——一个天文单位是地球跟太阳的平均距离——2000BD19表面会变得十分炎热，其高温度足以使锌和其他金属融化。

The perihelion of the earth each year is just several days after Christmas Day ( 3 or 4 January ) . So , the distances from the earth to the sun and from the earth to the moon may reach the closest point around Christmas every 4.425 years .

而每年的地近日点（1月3日或4日）正置圣诞节过后几天，因此，日、月、地相对运动每隔4.425a在圣诞节前后三者距离总会达到最近。