WASP-63

The planet WASP-63b is 1.43 times the radius of Jupiter, the largest planet in our Solar System. That makes it 14 times the radius of Earth. It is giant planet made of gas, whereas our Earth is a small, rocky planet.

Despite being larger, WASP-63b is only around half the mass of Jupiter, which means it is much less dense.

The star WASP-63 is 1.88 times the radius of the Sun and its spectral type is G8. Thus it is much larger than our Sun but cooler. This means it is becoming a red giant star, which happens when the nuclear furnace in the star’s core begins to run out of hydrogen fuel.

WASP-63b orbits at a distance of 8.59 million km, taking 4.38 days to go round its orbit.

WASP-63 lies in the constellation of Columba. Its coordinates are right ascension 06:17:21.0 and declination āˆ’38:19:24. The system is a distance of 285 parsecs away from us.

The brightest stars in the plot have magnitude āˆ’1 and the faintest have magnitude 6. WASP-63 has a visual magnitude of 11.2, so is much fainter than these stars. You would need a telescope to see it.

WASP-63b has been observed with NASA’s Hubble Space Telescope. The observation found that the planet has a fairly cloudy atmosphere with some signs of water vapour.

The discovery of WASP-63b was announced in a paper led by Coel Hellier of Keele University, who leads the team that built WASP-South.

WASP-South is an array of cameras out in the Karoo desert of South Africa. It was the first to discover the transits of WASP-63b.

For more information visit http://exoplanet.eu/catalog/wasp-63_b/.

References