How Far is Mercury from the Sun

by Fraser Cain on May 8, 2008

The orbit of Mercury is elliptical. This means that its orbit travels the path of an ellipse, and isn’t always the same distance from the Sun.

When Mercury makes its closest approach to the Sun, astronomers call this perihelion. So, the perihelion of Mercury is 46 million kilometers (29 million miles), or 0.307 astronomical units (1 AU is the distance from the Sun to the Earth).

The furthest point of a planet’s orbit is called the aphelion. So in the case of Mercury, its furthest point stretches out to 70 million km (44 million miles), or 0.466 astronomical units.

Qué tan lejos está Mercurio del Sol


Fraser Cain is the publisher of Universe Today. He's also the co-host of Astronomy Cast with Dr. Pamela Gay.

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