WASP-22

The planet WASP-22b is 1.20 times the radius of Jupiter, the largest planet in our Solar System.

WASP-22b is about double the mass of Saturn, which means that Jupiter is about 3 times as dense as WASP-22b.

The star WASP-22 is 1.13 times the radius of the Sun so it is slightly bigger. Its spectral type is unknown but is estimated to be G1. It has a brightness of 12.0.

WASP-22b orbits at a distance of 7.02 million km, taking 3.53 days to go round its orbit.

From Earth, WASP-22 lies in the constellation of Eridanus. In terms of coordinates, it has a right ascension of 03:31:16.0 and a declination of -23:49:11. The system is a distance of 300 parsecs from us.

The brightest stars in the plot have magnitude -1 and the faintest have magnitude 6, so with a visual magnitude 12.0 WASP-22 is much fainter than these stars.

Interesting Facts

The planet was discovered in 2010. The orbit of WASP-22 is nearly circular. Evidence suggests a third body in this system, which could be a small star or a second planet.

For more information visit http://exoplanet.eu/catalog/wasp-21_b/.

References