Tuesday, June 15, 2021

This is Epsilon Eridani b

The exoplanet moves on an orbit with a semi-major axis of 3.4 AU, completing one revolution every 7.4 years.ridanus. Discovered in 2000, it was the closest known exoplanet to Earth for several years.

As shown in this artistic representation, Epsilon Eridani b is a gas giant very similar to Jupiter: it has a mass and a diameter equal to respectively 0.78 and 1.24 times those of the giant of the Solar System.

The exoplanet moves on an orbit with a semi-major axis of 3.4 AU, completing one revolution every 7.4 years.

The artistic representation of the post also shows a system of rings and moons around the planet: these structures are only hypothetical and have not yet been observed (although their existence is very likely).

The grayish oblique line that stands out in the background represents a circumstellar disk, discovered thanks to the observations conducted in the infrared by the Spitzer Telescope. Epsilon Eridani is in fact a very young star, with an age of only 800 million years, and it is still surrounded by the dust residue of the formation of the system.

Credit: NASA, ESA, G. Bacon.

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