true anomaly

简明释义

真近点角

英英释义

例句

1.The true anomaly (真实异常角) helps in determining the distance between two celestial bodies at any point in their orbits.

在两个天体的任何轨道点之间，true anomaly（真实异常角）有助于确定它们之间的距离。

2.The true anomaly (真实异常角) is crucial for calculating the velocity of an orbiting body.

计算绕行物体的速度时，true anomaly（真实异常角）是至关重要的。

3.To predict the satellite's future path, we need to measure the true anomaly (真实异常角) at the current time.

为了预测卫星的未来轨迹，我们需要在当前时刻测量true anomaly（真实异常角）。

4.During the mission, the engineers monitored the true anomaly (真实异常角) to ensure accurate positioning.

在任务期间，工程师监测了true anomaly（真实异常角），以确保定位准确。

5.The satellite's position can be determined using the true anomaly (真实异常角) in its orbital calculations.

卫星的位置可以通过其轨道计算中的true anomaly（真实异常角）来确定。

作文

In the realm of celestial mechanics, understanding the dynamics of planetary motion is crucial for both astronomers and space enthusiasts. One of the key concepts that help describe the position of a celestial body in its orbit is the term true anomaly. The true anomaly is defined as the angle between the direction of periapsis (the point of closest approach to the central body) and the current position of the body, as seen from the main focus of the ellipse, which is typically the center of the mass of the body being orbited. This concept is essential for accurately determining the location of a planet or satellite at any given moment in its elliptical path around another body.To grasp the significance of true anomaly, one must first understand the characteristics of an elliptical orbit. An ellipse has two foci, and in the case of planetary orbits, one focus is occupied by the central star or planet. The true anomaly measures the angular distance of the orbiting body from the periapsis, allowing astronomers to predict its position along the orbit at any point in time. This measurement is vital for various applications, including satellite navigation, space missions, and understanding the gravitational interactions between celestial bodies.The calculation of true anomaly can be derived from other orbital elements, such as eccentricity and mean anomaly. The relationship between these elements allows astronomers to convert between different representations of an orbit, making it easier to analyze and predict the motion of celestial objects. For instance, while the mean anomaly provides an average angular speed of the orbiting body, the true anomaly gives a more precise indication of the body's actual position in its orbit.Moreover, the true anomaly plays a critical role in mission planning for spacecraft. When launching a satellite, engineers must consider the true anomaly to ensure that the satellite reaches its intended orbit at the right time. This involves calculating the necessary velocity and trajectory adjustments based on the satellite's current true anomaly at the moment of launch. Any discrepancies in this calculation can lead to significant errors in the satellite's final orbit, potentially compromising its mission.In summary, the concept of true anomaly is fundamental in celestial mechanics, providing essential information about the position of orbiting bodies. Its importance is evident in various fields, from astronomy to aerospace engineering. By mastering the understanding of true anomaly, one can appreciate the intricate dynamics of the universe and the precision required in space exploration. As we continue to explore the cosmos, the role of true anomaly will remain pivotal in our quest to understand the movements of celestial bodies and to navigate the vastness of space effectively.

在天体力学领域，理解行星运动的动态对于天文学家和太空爱好者至关重要。描述天体在其轨道上位置的关键概念之一是术语真实异常。真实异常被定义为从椭圆的主要焦点（通常是被围绕的天体的质心）看，最近接点（最靠近中心天体的点）与天体当前位置之间的角度。这个概念对于准确确定行星或卫星在其椭圆路径上的任意时刻的位置至关重要。要理解真实异常的重要性，首先必须了解椭圆轨道的特征。椭圆有两个焦点，在行星轨道的情况下，一个焦点被中央恒星或行星占据。真实异常测量的是围绕天体从最近接点的角度距离，使天文学家能够预测其在轨道上的位置。这一测量对于各种应用至关重要，包括卫星导航、太空任务和理解天体之间的引力相互作用。真实异常的计算可以从其他轨道元素中推导出来，例如偏心率和平均异常。不同轨道表示之间的关系使天文学家能够进行转换，从而更容易分析和预测天体的运动。例如，虽然平均异常提供了围绕天体的平均角速度，但真实异常则提供了对天体在轨道上实际位置的更精确指示。此外，真实异常在航天器的任务规划中发挥着关键作用。在发射卫星时，工程师必须考虑真实异常以确保卫星在正确的时间到达其预定轨道。这涉及根据卫星在发射时的当前真实异常计算必要的速度和轨迹调整。任何计算中的差异都可能导致卫星最终轨道的重大错误，从而可能危及其任务。总之，真实异常的概念在天体力学中是基础性的，提供了关于轨道天体位置的重要信息。它的重要性在各个领域中显而易见，从天文学到航空航天工程。通过掌握对真实异常的理解，人们可以欣赏宇宙的复杂动态以及太空探索所需的精确性。随着我们继续探索宇宙，真实异常的角色将在我们理解天体运动和有效导航广阔太空的追求中保持关键。