apsidal period

简明释义

拱线运动周期

英英释义

例句

1.Studying the apsidal period helps scientists determine the age of star clusters.

研究近心周期帮助科学家确定星团的年龄。

2.The apsidal period can change due to the presence of other nearby celestial objects.

由于附近其他天体的存在，近心周期可能会发生变化。

3.The apsidal period is essential for predicting the orbits of planets in our solar system.

预测我们太阳系中行星轨道的近心周期是至关重要的。

4.The apsidal period of a binary star system can provide valuable information about its mass and distance.

双星系统的近心周期可以提供关于其质量和距离的重要信息。

5.Astronomers calculate the apsidal period to understand the gravitational interactions between celestial bodies.

天文学家计算近心周期以了解天体之间的引力相互作用。

作文

The concept of the apsidal period is fundamental in the field of celestial mechanics and astronomy. It refers to the time it takes for an orbiting body to complete one full cycle between its two apsides, which are the points of closest and farthest approach to the central body it orbits. This concept is not only crucial for understanding the motion of planets and moons but also plays a significant role in satellite dynamics and space exploration. In essence, the apsidal period helps astronomers and scientists predict the positions of celestial bodies over time. For instance, when considering the orbit of a planet around the sun, the two apsidal points are known as perihelion (the closest point to the sun) and aphelion (the farthest point from the sun). The apsidal period can vary significantly depending on the eccentricity of the orbit; more elliptical orbits will have longer periods compared to nearly circular ones. Understanding the apsidal period is also essential for mission planning in space exploration. For example, when planning a mission to Mars, scientists must calculate the apsidal period of Mars' orbit to determine the best launch windows. If the calculations are incorrect, a spacecraft might miss its target or require additional fuel to adjust its trajectory, leading to increased costs and extended mission durations. Moreover, the apsidal period has implications beyond just planetary orbits. In binary star systems, the apsidal period can influence the evolution of the stars, affecting their mass transfer rates and ultimately their life cycles. This interplay between gravitational forces and orbital mechanics showcases the intricate dance of celestial bodies governed by the laws of physics. In summary, the apsidal period is a critical parameter in orbital mechanics that describes the time required for an object to traverse its elliptical path between its two apsides. Its applications span from predicting celestial movements to facilitating successful space missions and understanding stellar interactions. As we continue to explore the universe, the significance of the apsidal period will only grow, revealing more about the complex dynamics that govern our cosmos.

“apsidal period”这个概念在天体力学和天文学领域中是非常基础的。它指的是一个轨道天体完成一次完整循环所需的时间，这个循环是在其两个焦点之间进行的，焦点是指其最接近和最远离其中心天体的点。这个概念不仅对于理解行星和卫星的运动至关重要，而且在卫星动力学和太空探索中也发挥着重要作用。从本质上讲，“apsidal period”帮助天文学家和科学家预测天体随时间的运动位置。例如，在考虑行星围绕太阳的轨道时，两个焦点被称为近日点（离太阳最近的点）和远日点（离太阳最远的点）。根据轨道的偏心率，“apsidal period”的长度可能会显著不同；更椭圆的轨道将比几乎圆形的轨道具有更长的周期。理解“apsidal period”对于太空探索中的任务规划也是至关重要的。例如，在规划前往火星的任务时，科学家必须计算火星轨道的“apsidal period”以确定最佳发射窗口。如果计算不正确，航天器可能会错过目标或者需要额外的燃料来调整轨迹，从而导致成本增加和任务持续时间延长。此外，“apsidal period”不仅仅影响行星轨道。在双星系统中，“apsidal period”可以影响恒星的演化，影响它们的质量转移速率以及最终的生命周期。这种引力和轨道力学之间的相互作用展示了受物理法则支配的天体之间复杂的舞蹈。总之，“apsidal period”是轨道力学中的一个关键参数，它描述了一个物体在两个焦点之间穿越其椭圆路径所需的时间。它的应用范围从预测天体运动到促进成功的太空任务，再到理解恒星间的相互作用。随着我们继续探索宇宙，“apsidal period”的重要性只会增加，揭示出更多关于支配我们宇宙的复杂动态。