mean anomaly

简明释义

平近点角

英英释义

例句

1.The formula for calculating the mean anomaly (平均异常) involves the orbital period and time since periapsis.

计算平均异常 (mean anomaly) 的公式涉及轨道周期和自近日点以来的时间。

2.The satellite's position is determined using its mean anomaly (平均异常) to calculate its orbit.

卫星的位置通过使用其平均异常 (mean anomaly) 来计算其轨道。

3.The mean anomaly (平均异常) helps in approximating the true anomaly for orbital calculations.

在轨道计算中，平均异常 (mean anomaly) 有助于近似真实异常。

4.To predict the next pass of the spacecraft, we need to update the mean anomaly (平均异常) regularly.

为了预测航天器的下一个经过，我们需要定期更新平均异常 (mean anomaly)。

5.In celestial mechanics, the mean anomaly (平均异常) is often used to describe the position of an orbiting body.

在天体力学中，平均异常 (mean anomaly) 通常用于描述一个轨道物体的位置。

作文

Understanding celestial mechanics can be quite fascinating, especially when we delve into the intricacies of orbital dynamics. One of the fundamental concepts in this field is the concept of mean anomaly, which plays a pivotal role in determining the position of an orbiting body at any given time. In simple terms, mean anomaly (平均异常) is a measure of time in relation to the orbital period of the body, expressed in degrees or radians. It serves as a way to describe the average angular distance covered by the orbiting object from its periapsis, which is the point of closest approach to the body it is orbiting around.To fully grasp the significance of mean anomaly, it's essential to understand the context of elliptical orbits. Most celestial bodies, including planets, moons, and artificial satellites, follow elliptical paths as they orbit larger masses due to gravitational forces. The shape of an ellipse is defined by two focal points, with one of them being the center of mass of the body being orbited. The mean anomaly helps astronomers and engineers predict the position of these bodies along their orbits over time.The calculation of mean anomaly is straightforward. It is derived from the orbital period of the body and the time elapsed since it last passed its periapsis. The formula for mean anomaly (M) is given by:M = n(t - T)where n is the mean motion (the average angular speed), t is the current time, and T is the time of periapsis passage. This formula indicates that mean anomaly increases linearly with time, making it a useful parameter for tracking orbital positions.In practical applications, mean anomaly is crucial for satellite navigation and space missions. For instance, when launching a satellite, mission planners must know its mean anomaly to ensure it reaches the desired orbit accurately. The mean anomaly allows for the synchronization of satellite systems, ensuring that communication and data transmission occur as intended.Moreover, mean anomaly is also instrumental in the calculations for interplanetary travel. When planning missions to other planets, scientists rely on this concept to determine the optimal launch windows and trajectories. By understanding the mean anomaly of both the spacecraft and the target planet, they can calculate the most efficient path for the journey.In conclusion, the concept of mean anomaly is a fundamental aspect of celestial mechanics that aids in the understanding of orbital dynamics. Its ability to provide a consistent method for expressing the position of an orbiting body makes it invaluable for astronomers and space mission planners alike. As we continue to explore the cosmos, the principles behind mean anomaly will undoubtedly remain essential in guiding our journeys through space.

理解天体力学是非常迷人的，尤其是当我们深入研究轨道动力学的复杂性时。在这个领域中，一个基本概念是平均异常，它在确定任何给定时间的轨道物体的位置方面发挥着关键作用。简单来说，平均异常(mean anomaly) 是与物体的轨道周期相关的时间的度量，以度或弧度表示。它作为一种方式来描述轨道物体从其近日点（即最接近所围绕的天体的点）覆盖的平均角距离。要充分理解平均异常的重要性，必须了解椭圆轨道的背景。大多数天体，包括行星、卫星和人造卫星，由于引力作用，遵循椭圆路径绕较大质量物体运行。椭圆的形状由两个焦点定义，其中一个是被围绕的物体的质心。平均异常帮助天文学家和工程师预测这些物体在轨道上的位置随时间的变化。平均异常的计算是简单的。它源于物体的轨道周期和自上次经过近日点以来经过的时间。平均异常(M) 的公式为：M = n(t - T)其中n是平均运动（平均角速度），t是当前时间，T是近日点通过的时间。这个公式表明，平均异常随着时间线性增加，使它成为跟踪轨道位置的有用参数。在实际应用中，平均异常对卫星导航和太空任务至关重要。例如，在发射卫星时，任务规划者必须知道其平均异常以确保其准确到达预定轨道。平均异常允许卫星系统的同步，确保通信和数据传输按预期进行。此外，平均异常也在行星际旅行的计算中发挥着重要作用。在计划前往其他行星的任务时，科学家依赖这一概念来确定最佳发射窗口和轨迹。通过理解航天器和目标行星的平均异常，他们可以计算出最有效的旅行路径。总之，平均异常的概念是天体力学的一个基本方面，有助于理解轨道动力学。它提供了一种一致的方法来表达轨道物体的位置，使其对天文学家和太空任务规划者而言无价。随着我们继续探索宇宙，平均异常背后的原理无疑将在指导我们穿越太空的旅程中保持重要性。