 Later , between 2009 and 2011 , another team of astronomers observed WASP @-@ 13b and WASP @-@ 21b to find what caused some Hot Jupiters to have anomalously high radii . The RISE photometric camera on the Liverpool Telescope was used to detect further transits . Two partial transits and two full transits were observed during this period , although the quality of both full transits was slightly compromised because of passing cloud cover . The collected observations , along with the JGT observations that were used to confirm the planet , were scaled to filter out errors such as background noise . The data was then used to re @-@ define WASP @-@ 13b 's parameters , including its age , mass , radius , and density . The study also noted that a limb darkening effect was present , a characteristic that may affect future atmospheric studies of the planet . 
 Later , between 2009 and 2011 , another team of astronomers observed WASP @-@ 13b and WASP @-@ <a href='uninflect' title='1'><mark>21b</mark></a> to find what caused some Hot Jupiters to have anomalously high radii . The RISE photometric camera on the Liverpool Telescope was used to detect further transits . Two partial transits and two full transits <a href='uninflect' title='2'><mark>were</mark></a> observed during this period , although the quality of both full transits was slightly compromised because of passing cloud cover . The collected observations , along with the JGT observations <a href='null_relcl' title='3'><mark>that</mark></a><a href='uninflect' title='4'><mark>were</mark></a> used to confirm the planet , <a href='uninflect' title='5'><mark>were</mark></a> scaled to filter out errors such as background noise . The data was then used to re @-@ define WASP @-@ 13b <a href='null_genetive' title='6'><mark>'s</mark></a>parameters , including its age , mass , radius , and density . The study also noted that a limb darkening effect<a href='been_done' title='7'><mark></mark></a> was present , a characteristic <a href='null_relcl' title='8'><mark>that</mark></a>may affect future atmospheric studies of the planet . 
Later , between 2009 and 2011 , another team of astronomers observed WASP @-@ 13b and WASP @-@ 21bbed to find what caused sum Hot Jupiters to have anomalously high radii . The RISE photometric camera on da Liverpool Telescope was used to detect further transits . 2 partial transits and two full transits was observed during this period , although the quality of both full transits was slightly compromised because of passing cloud cover . The collected observations , along with tdaJGT observations was used to confirm thdalanet , was scaled to filter outt errors such as background noise . Thedata was then used to re @-@ define WASP @-@ 13b  parameters , including its age , mass , radius , and density . The dady also noted that a limb darkening effect done was present , a characteristic may affect future atmospheric studies of the pdaet .