We present the preliminary analysis of over 1739 known and 349 candidate Jovian Trojans observed by the NEOWISE component of the Wide-field Infrared Survey Explorer ( WISE ) .
With this survey the available diameters , albedos and beaming parameters for the Jovian Trojans have been increased by more than an order of magnitude compared to previous surveys ( 42 ; 41 ; 6 ; 5 ; 36 ) .
We find that the Jovian Trojan population is very homogenous for sizes larger than \sim 10 km ( close to the detection limit of WISE for these objects ) .
The observed sample consists almost exclusively of low albedo objects , having a mean albedo value of 0.07 \pm 0.03 .
The beaming parameter was also derived for a large fraction of the observed sample , and it is also very homogenous with an observed mean value of 0.88 \pm 0.13 .
Preliminary debiasing of the survey shows our observed sample is consistent with the leading cloud containing more objects than the trailing cloud .
We estimate the fraction to be N ( \mbox { leading } ) / N ( \mbox { trailing } ) \sim 1.4 \pm 0.2 , lower than the 1.6 \pm 0.1 value derived by Szabó et al .
( 39 ) .