We present the preliminary analysis of 1023 known asteroids in the Hilda region of the Solar System observed by the NEOWISE component of the Wide-field Infrared Survey Explorer ( WISE ) .
The sizes of the Hildas observed range from \sim 3 - 200 km .
We find no size - albedo dependency as reported by other projects .
The albedos of our sample are low , with a weighted mean value p _ { V } = 0.055 \pm 0.018 , for all sizes sampled by the NEOWISE survey .
We observed a significant fraction of the objects in the two known collisional families in the Hilda population .
It is found that the Hilda collisional family is brighter , with weighted mean albedo of p _ { V } = 0.061 \pm 0.011 , than the general population and dominated by D-type asteroids , while the Schubart collisional family is darker , with weighted mean albedo of ( p _ { V } = 0.039 \pm 0.013 ) .
Using the reflected sunlight in the two shortest WISE bandpasses we are able to derive a method for taxonomic classification of \sim 10 \% of the Hildas detected in the NEOWISE survey .
For the Hildas with diameter larger than 30km there are 67 ^ { +7 } _ { -15 } \% D-type asteroids and 26 ^ { +17 } _ { -5 } \% C-/P-type asteroids ( with the majority of these being P-types ) .