Juno Sees Jupiter’s ‘Little Red Spot’

A stunning new image of Jupiter captured by NASA’s Juno robotic orbiter shows a huge storm called the North North Temperate Little Red Spot 1 (NN-LRS-1), the third largest anticyclonic storm on the gas giant.

The North North Temperate Little Red Spot 1. Image credit: NASA / JPL-Caltech / SwRI / MSSS / Gerald Eichstädt / Seán Doran.

The North North Temperate Little Red Spot 1. Image credit: NASA / JPL-Caltech / SwRI / MSSS / Gerald Eichstädt / Seán Doran.

An anticyclone is a weather phenomenon with large-scale circulation of winds around a central region of high atmospheric pressure.

They rotate clockwise in the northern hemisphere, and counterclockwise in the southern hemisphere.

As well as the Great Red Spot, Jupiter sometimes presents one or more anticyclonic ‘Little Red Spots,’ often seen in the North North Temperate Zone.

NN-LRS-1 is the third largest anticyclonic oval on the planet, typically around 3,700 miles (6,000 km) long.

It has been tracked at least since 1993, and may be older still.

NN-LRS-1’s color varies between red and off-white (as it is now), but the new image shows that it still has a pale reddish core within the radius of maximum wind speeds.

The image was taken on July 10, 2017 at 9:42 p.m. EDT (6:42 p.m. PDT), as Juno performed its seventh close flyby of Jupiter.

At the time the image was taken, the spacecraft was about 7,111 miles (11,444 km) from the tops of the clouds of the gas giant at a latitude of 44.5 degrees.

Citizen scientists Gerald Eichstädt and Seán Doran processed the image using data from the JunoCam instrument.

The image has been rotated so that the top of the image is actually the equatorial regions while the bottom of the image is of the northern polar regions of the planet.

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