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annual parallax

/ˈænjuəl ˈpærəlæks/

翻译: 地球绕太阳公转引起的近距恒星或天体的视位置在一年内的周期性偏移,用于测量恒星距离。

1 个条目

phrase

/ˈænjuəl ˈpærəlæks/C1formalscientific
  • zh地球绕太阳公转引起的近距恒星或天体的视位置在一年内的周期性偏移,用于测量恒星距离。

The apparent shift in the position of a nearby star or celestial object as observed from Earth, caused by the Earth's orbit around the Sun over the course of a year. It is used to measure distances to stars.

  1. Astronomical measurementC2formal

    The apparent shift in the position of a nearby star against the background of distant stars, caused by the Earth's orbit around the Sun.

    zh周年视差

    • Astronomers use annual parallax to calculate the distance to nearby stars.
    • The annual parallax of Proxima Centauri is about 0.77 arcseconds.
    • Measuring annual parallax was a major breakthrough in stellar astronomy.