 WASP @-@ 13b is an extrasolar planet that was discovered in 2008 in the orbit of the sunlike star WASP @-@ 13 . The planet has a mass of nearly half that of Jupiter , but a radius five @-@ fourths the size of Jupiter . This low relative mass might be caused by a core that is of low mass or that is not present at all . 
 WASP @-@ 13b <a href='drop_aux' title='1'><mark>is</mark></a>an extrasolar planet <a href='null_relcl' title='2'><mark>that</mark></a>was discovered in 2008 in the orbit of the sunlike star WASP @-@ 13 . The planet <a href='got' title='3'><mark>has</mark></a> a mass of nearly half that of Jupiter , but a radius five @-@ fourths the size of Jupiter . This low relative mass might be caused by a core <a href='null_relcl' title='4'><mark>that</mark></a>is of low mass or that <a href='negative_concord' title='5'><mark>is</mark></a> <a href='negative_concord' title='6'><mark>not</mark></a>present at all . 
WASP @-@ 13b an extrasolar planet was discovered in 2008 in the orbit of da sunlike star WASP @-@ 13 . The planet got a mass of nearly half dat of Jupiter , but a radius five @-@ fourths the size of Jupiter . dis low relative mass mite be caused by a core is of low mass or that ain't present at alll .