orbital elements

简明释义

轨道要素

英英释义

例句

1.Astronomers use orbital elements to calculate the trajectory of comets.

天文学家使用轨道元素来计算彗星的轨迹。

2.To launch a spacecraft, engineers must determine its orbital elements precisely.

为了发射航天器，工程师必须精确确定其轨道元素。

3.The orbital elements include parameters like eccentricity and inclination.

轨道元素包括偏心率和倾角等参数。

4.Understanding the orbital elements helps in planning interplanetary missions.

理解轨道元素有助于规划行星际任务。

5.The orbital elements of the satellite are essential for predicting its position.

卫星的轨道元素对于预测其位置至关重要。

作文

The study of celestial mechanics involves a deep understanding of the forces and motions that govern the movement of objects in space. One of the fundamental concepts in this field is the set of parameters known as orbital elements, which describe the shape, orientation, and position of an orbiting body in relation to a central body. These parameters are crucial for predicting the future positions of satellites, planets, and other celestial bodies. To fully grasp the significance of orbital elements in astronomy and space exploration, it is essential to examine their various components. The six classical orbital elements include: semi-major axis, eccentricity, inclination, longitude of the ascending node, argument of periapsis, and true anomaly. Each of these elements plays a vital role in defining the characteristics of an orbit.The semi-major axis represents the average distance between the orbiting body and the central body, essentially determining the size of the orbit. Eccentricity measures the deviation of the orbit from being circular; a value of zero indicates a perfect circle, while values approaching one indicate more elongated orbits. The inclination denotes the tilt of the orbit's plane with respect to the reference plane, typically the equatorial plane of the central body. The longitude of the ascending node specifies the angle from a reference direction (usually the vernal equinox) to the point where the orbiting body crosses the reference plane going upwards. The argument of periapsis describes the angle from the ascending node to the point of closest approach to the central body, known as periapsis. Finally, the true anomaly gives the position of the orbiting body along its orbit at a specific time, indicating how far it has traveled since periapsis.Understanding these orbital elements is not only vital for astronomers but also for engineers who design spacecraft and satellite missions. For instance, when launching a satellite, mission planners must calculate the required orbital elements to ensure that the satellite reaches its intended orbit and can perform its designated functions, such as communication, weather monitoring, or scientific research.Moreover, the concept of orbital elements extends beyond our solar system. As astronomers discover exoplanets orbiting distant stars, they utilize these same principles to understand the dynamics of these new worlds. By analyzing the orbital elements of exoplanets, scientists can infer their potential habitability, climate conditions, and even the presence of moons or rings.In conclusion, the study of orbital elements is a cornerstone of celestial mechanics, providing essential insights into the movements of celestial bodies. Whether for practical applications in satellite technology or theoretical explorations of distant worlds, mastering the intricacies of orbital elements is crucial for anyone interested in the vast and dynamic universe we inhabit. As we continue to explore space, the importance of these parameters will only grow, guiding our understanding of the cosmos and our place within it.

天体力学的研究涉及对支配宇宙中物体运动的力量和运动的深入理解。这个领域中的一个基本概念是称为轨道元素的一组参数，它们描述了围绕中心体的轨道体的形状、方向和位置。这些参数对于预测卫星、行星和其他天体的未来位置至关重要。要充分理解轨道元素在天文学和太空探索中的重要性，必须检查其各个组成部分。六个经典的轨道元素包括：半长轴、偏心率、倾斜度、升交点的经度、近日点的参数和真实异常。每一个元素在定义轨道特征方面都发挥着至关重要的作用。半长轴表示轨道体与中心体之间的平均距离，基本上决定了轨道的大小。偏心率测量轨道与圆形的偏离程度；值为零表示完美的圆形，而接近一的值表示更为拉长的轨道。倾斜度表示轨道平面相对于参考平面的倾斜，通常是中心体的赤道平面。升交点的经度指定从参考方向（通常是春分点）到轨道体穿越参考平面向上移动的点的角度。近日点的参数描述从升交点到离中心体最近的接近点（称为近日点）的角度。最后，真实异常给出了轨道体在特定时间沿其轨道的位置，指示它自近日点以来已经移动的距离。理解这些轨道元素不仅对天文学家至关重要，而且对设计航天器和卫星任务的工程师也同样重要。例如，在发射卫星时，任务规划者必须计算所需的轨道元素以确保卫星达到预定轨道并能够执行其指定的功能，如通信、天气监测或科学研究。此外，轨道元素的概念超越了我们的太阳系。当天文学家发现围绕遥远恒星运行的系外行星时，他们利用这些相同的原理来理解这些新世界的动态。通过分析系外行星的轨道元素，科学家可以推断它们的潜在宜居性、气候条件，甚至存在卫星或环的可能性。总之，轨道元素的研究是天体力学的基石，为我们提供了关于天体运动的重要见解。无论是用于卫星技术的实际应用，还是对遥远世界的理论探索，掌握轨道元素的复杂性对于任何对我们所居住的广阔而动态的宇宙感兴趣的人来说都是至关重要的。随着我们继续探索太空，这些参数的重要性只会增加，引导我们理解宇宙及我们在其中的位置。