astrometric position

简明释义

天体或宇宙飞行器在天球上位置

英英释义

例句

1.The astrometric position of the newly discovered planet was recorded in the database for further study.

新发现行星的天体测量位置被记录在数据库中以供进一步研究。

2.Using advanced algorithms, researchers improved the accuracy of the astrometric position calculations.

通过使用先进的算法，研究人员提高了天体测量位置计算的准确性。

3.The telescope was calibrated to accurately measure the astrometric position of distant stars.

望远镜经过校准，以准确测量遥远恒星的天体测量位置。

4.The astrometric position helps astronomers determine the distance of stars from Earth.

该天体测量位置帮助天文学家确定恒星与地球的距离。

5.Astronomers often rely on the astrometric position of celestial bodies to predict their future movements.

天文学家常常依赖天体的天体测量位置来预测它们未来的运动。

作文

In the vast expanse of the universe, astronomers and astrophysicists constantly strive to understand the positions and movements of celestial bodies. One crucial concept in this field is the astrometric position, which refers to the precise location of an astronomical object as determined through astrometry. Astrometry is the branch of astronomy that deals with measuring the positions and movements of stars and other celestial objects. By calculating the astrometric position of these objects, scientists can gather invaluable data about their distances, motions, and even their physical characteristics.The importance of knowing the astrometric position cannot be overstated. For instance, when astronomers want to study a star, they need to know not only its brightness but also where it is located in the sky. The astrometric position allows them to pinpoint the star's coordinates, usually given in terms of right ascension and declination, similar to how we use latitude and longitude on Earth. This information is essential for tracking the star's movement over time, which can reveal much about its nature and evolution.Moreover, advancements in technology have significantly improved our ability to measure astrometric positions. Historically, astronomers relied on telescopes and manual calculations, which were prone to errors. However, with the advent of space-based observatories like the Hubble Space Telescope and missions such as Gaia, we can now obtain highly accurate measurements of the astrometric position of millions of stars. Gaia, in particular, is designed to create a three-dimensional map of our galaxy by measuring the positions and distances of stars with unprecedented precision.The implications of accurately determining the astrometric position extend beyond mere academic interest. For example, understanding the motion of nearby stars can help us learn more about the dynamics of our galaxy. It can also aid in the search for exoplanets, as the gravitational influence of a planet can cause a star to wobble slightly, affecting its astrometric position. By observing these subtle changes, astronomers can infer the presence of planets orbiting distant stars.Furthermore, the astrometric position is vital for navigation purposes. In the past, sailors used the positions of stars to navigate the seas. Today, while we rely on GPS technology, the principles underlying astrometric position measurements still play a role in our understanding of Earth's place in the cosmos. Scientists can use the positions of distant stars as reference points to calibrate instruments and improve the accuracy of our navigation systems.In conclusion, the concept of astrometric position is fundamental to the field of astronomy. It encompasses the precise location of celestial bodies, which is critical for understanding their movements and characteristics. With technological advancements, our ability to measure these positions has greatly improved, leading to significant discoveries about our universe. As we continue to explore the cosmos, the astrometric position will remain a key element in unraveling the mysteries of space and time. Whether for academic research or practical applications, mastering the concept of astrometric position is essential for anyone interested in the wonders of astronomy.

在宇宙的浩瀚空间中，天文学家和天体物理学家不断努力理解天体的位置和运动。这个领域的一个重要概念是天体测量位置，它指的是通过天体测量法确定的天文物体的精确位置。天体测量法是天文学的一个分支，专门研究恒星和其他天体的位置和运动的测量。通过计算这些物体的天体测量位置，科学家可以收集有关它们的距离、运动，甚至是它们的物理特征的宝贵数据。了解天体测量位置的重要性不容小觑。例如，当天文学家想要研究一颗恒星时，他们不仅需要知道它的亮度，还需要知道它在天空中的位置。天体测量位置使他们能够准确地确定恒星的坐标，通常用赤经和赤纬来表示，类似于我们在地球上使用的纬度和经度。这些信息对于跟踪恒星随时间的运动至关重要，这可以揭示出许多关于其性质和演化的信息。此外，技术的进步显著提高了我们测量天体测量位置的能力。历史上，天文学家依赖望远镜和手动计算，这容易出错。然而，随着哈勃太空望远镜等空间观测站和盖亚任务的出现，我们现在可以获得数百万颗恒星的天体测量位置的高精度测量。特别是盖亚旨在通过以前所未有的精度测量恒星的位置和距离，创建我们银河系的三维地图。准确确定天体测量位置的意义超出了纯学术兴趣。例如，了解附近恒星的运动可以帮助我们更多地了解银河系的动态。它还可以帮助寻找系外行星，因为行星的引力影响可能导致恒星轻微晃动，从而影响其天体测量位置。通过观察这些微妙的变化，天文学家可以推断出围绕遥远恒星运行的行星的存在。此外，天体测量位置对导航目的至关重要。在过去，水手们利用恒星的位置在海上导航。今天，尽管我们依赖GPS技术，但测量天体测量位置的原理仍然在我们理解地球在宇宙中的位置方面发挥着作用。科学家可以使用遥远恒星的位置作为参考点来校准仪器，提高我们的导航系统的准确性。总之，天体测量位置的概念是天文学领域的基础。它包含了天体的精确位置，这对于理解它们的运动和特征至关重要。随着技术的进步，我们测量这些位置的能力大大提高，导致了我们宇宙中的重大发现。当我们继续探索宇宙时，天体测量位置将始终是揭示时空奥秘的关键元素。无论是出于学术研究还是实际应用，掌握天体测量位置的概念对于任何对天文学奇观感兴趣的人来说都是必不可少的。