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4 sty 2015 · French astronomer Jerome Lalande collected all the data and computed the first accurate distance to the Sun: 153 million kilometers, good to within three percent of the true value!
15 lut 2011 · From this, they deduced the distance Earth-Mars. Then, using the Kepler law $$\frac{a^3}{p^2}= constant$$ (where $a$ is the distance between the planet and the Sun, and $p$ the sideral time)
Aristarchus of Samos was the first to seriously calculate the distance to the Sun, using geometry. When the Moon is exactly half illuminated when seen from the Earth (first or last quarter phase), then there is a right triangle between the Earth, Moon, and Sun, with the Moon at the right angle.
Pick two images of the Sun; use the one that has the largest apparent solar diameter and the one that has the smallest. These should be about six months apart. (Why?) Use these two images to find the variation in the Earth-Sun distance R.
If you observe the planet's path across the face Sun from two different places, measuring the chords across the Sun's disk and the timings, using no more than trigonometry, you can get an accurate distance to the Sun. Here's a good discussion of the method on the Physics SE.
Instant free online tool for Earth's distance from sun to yard conversion or vice versa. The Earth's distance from sun to yard [yd] conversion table and conversion steps are also listed. Also, explore tools to convert Earth's distance from sun or yard to other length units or learn more about length conversions.
10 maj 2024 · Astronomers use various methods to determine the Earth-Sun distance, including geometric calculations based on the Earth’s orbit and observations of planetary motions.
