The scientists used the Hubble to figure out the direction of the star's travels and the distance from the galactic center, along with the star's mass, age and speed.

科学家们利用哈勃望远镜计算出该恒星行进的方向和离银河系中心的距离，连同他的质量、年龄和速度一起计算。

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H0 is the Hubble constant, or parameter that indicates the rate at which the universe is expanding; and distance is the galaxy's distance from the one with which it's being compared.

其中，速度表示星系后退的速度，H0为哈勃常数，也即宇宙膨胀速率的参数，而距离指的是星系与相比较星系之间的距离。

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With the Hubble Space Telescope, researchers have now pinned down the distance to HD 140283, which allowed them to determine how bright the star is.

借助哈勃望远镜，研究者现在确认了HD 140283号恒星离地球的距离，这使他们能够进一步测量该行星的亮度。

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Unfortunately, neither Hubble nor ground based observatories were able to make a distance determination.

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In 1995 a team led by Anita Cochran of the University of Texas at Austin used the Hubble space telescope to find what it thinks were 30 comet-sized fragments, at a distance that would put them inside the Kuiper belt.

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