geocentric right ascension

简明释义

地心赤经

英英释义

例句

1.The astronomer calculated the geocentric right ascension 地心赤经 of the star to determine its position in the sky.

天文学家计算了这颗星星的地心赤经以确定它在天空中的位置。

2.In celestial navigation, knowing the geocentric right ascension 地心赤经 is crucial for accurate star positioning.

在天体导航中，了解地心赤经对于准确定位星星至关重要。

3.The star chart displayed the geocentric right ascension 地心赤经 values for various constellations.

星图显示了各种星座的地心赤经值。

4.Astrophysicists often refer to the geocentric right ascension 地心赤经 when discussing the movement of planets.

天体物理学家在讨论行星运动时常常提到地心赤经。

5.The telescope software uses geocentric right ascension 地心赤经 to help users locate celestial objects.

望远镜软件使用地心赤经来帮助用户定位天体。

作文

In the field of astronomy, understanding celestial coordinates is crucial for locating stars and other celestial objects. One of the key components of these coordinates is known as geocentric right ascension. This term refers to the angular distance of a celestial object measured along the celestial equator from the vernal equinox, considering the Earth as the center of the coordinate system. The concept of geocentric right ascension (中文释义：地心赤经) allows astronomers to pinpoint the position of stars and planets in relation to our planet, which is fundamental for navigation and observation.The celestial sphere is an imaginary sphere that surrounds the Earth, onto which all celestial bodies are projected. In this framework, the celestial equator represents the projection of the Earth's equator into space. The geocentric right ascension is measured in hours, minutes, and seconds, with one complete rotation of the celestial sphere corresponding to 24 hours. This measurement system is particularly useful because it simplifies the calculations needed for tracking celestial objects over time.To further understand geocentric right ascension, it is essential to consider its relationship with another coordinate known as declination. While right ascension measures the east-west position of a star, declination measures the north-south position. Together, these two coordinates form a system akin to latitude and longitude on Earth, enabling astronomers to specify the exact location of a star or planet in the sky.The significance of geocentric right ascension extends beyond mere academic interest. For navigators and explorers, knowing the precise position of celestial bodies has historically been vital for determining direction and location at sea. Before the advent of modern navigation tools, sailors relied heavily on the stars to guide their journeys across vast oceans. By calculating the geocentric right ascension of specific stars, they could ascertain their position relative to the horizon and adjust their course accordingly.Moreover, the concept of geocentric right ascension plays a crucial role in modern astronomy, particularly in the field of astrophysics. With the development of advanced telescopes and observational technology, astronomers can now track the movement of celestial bodies with incredible precision. Understanding the geocentric right ascension of these objects allows scientists to study their properties, movements, and interactions with other celestial phenomena. This knowledge contributes to our broader understanding of the universe and its underlying principles.In conclusion, the term geocentric right ascension is a fundamental aspect of celestial navigation and astronomy. By measuring the angular distance of celestial objects from the vernal equinox, it provides a framework for locating and studying stars and planets. Its historical significance in navigation and its contemporary relevance in scientific research highlight its importance in the field of astronomy. As we continue to explore the cosmos, the understanding of geocentric right ascension will remain a vital tool for astronomers and navigators alike.

在天文学领域，理解天体坐标对于定位星星和其他天体至关重要。其中一个关键组成部分被称为地心赤经。这个术语指的是从春分点沿着天球赤道测量的天体的角距离，考虑地球作为坐标系统的中心。地心赤经（英文释义：geocentric right ascension）的概念使天文学家能够确定星星和行星相对于我们星球的位置，这对于导航和观察至关重要。天球是一个想象中的球体，包围着地球，所有天体都被投影到这个球体上。在这个框架中，天球赤道代表了地球赤道在太空中的投影。地心赤经以小时、分钟和秒为单位进行测量，天球的完整旋转对应于24小时。这种测量系统特别有用，因为它简化了跟踪天体随时间变化所需的计算。为了进一步理解地心赤经，必须考虑它与另一个坐标的关系，即赤纬。虽然赤经测量的是星星的东西位置，但赤纬则测量南北位置。这两个坐标结合在一起形成了类似于地球上的纬度和经度的系统，使天文学家能够准确指定星星或行星在天空中的确切位置。地心赤经的重要性超越了单纯的学术兴趣。对于导航员和探险家来说，知道天体的精确位置在历史上对确定海上的方向和位置至关重要。在现代导航工具出现之前，水手们在广阔的海洋中航行时严重依赖星星。通过计算特定星星的地心赤经，他们可以确定相对于地平线的位置，并相应调整航向。此外，地心赤经的概念在现代天文学中发挥着至关重要的作用，特别是在天体物理学领域。随着先进望远镜和观测技术的发展，天文学家现在可以以惊人的精确度跟踪天体的运动。理解这些天体的地心赤经使科学家能够研究它们的性质、运动及与其他天体现象的相互作用。这些知识有助于我们更广泛地理解宇宙及其基本原理。总之，术语地心赤经是天体导航和天文学的基本方面。通过测量天体从春分点的角距离，它提供了定位和研究星星和行星的框架。它在导航中的历史重要性以及在科学研究中的当代相关性突显了它在天文学领域的重要性。随着我们继续探索宇宙，对地心赤经的理解将仍然是天文学家和导航员的重要工具。