equatorial plane

noun

, Astronomy.

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First recorded in 1890–95

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Such worlds were a shock to astronomers, because planets form inside pancake-shaped disks of gas and dust orbiting in their stars’ equatorial planes.

In 2008, however, astronomers began finding worlds in other solar systems that sail far above and below their star’s equatorial plane.

An equatorial plane divides it into two parts, which have equal shares in bounding the segmentation cavity.

By these "two main axes" an equatorial plane is determined, which approximates them to the Discoidea.

The diameter of this equatorial plane is the "minor axis" of the ellipsoid.

Commonly all radial beams lie in the equatorial plane, sometimes also a part of them on both sides of it.

On the margin (in the equatorial plane) three strong pyramidal spines (at the end of the arms).

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