1847 WISE-observed asteroids thermal properties

We use thermal flux measurements obtained by the Wide-field Infrared Survey Explorer (WISE) during its fully cryogenic phase, when both the 12um (W3) and 22um (W4) bands were available. We take shape models and spin information from the Database of Asteroid Models from Inversion Techniques (DAMIT) and derive new shape models through lightcurve inversion and combining WISE photometry with existing DAMIT lightcurves.

When we limit our sample to the asteroids with the most reliable shape models and thermal flux measurements, we find broadly consistent thermal inertia relations with recent studies. We apply fits to the diameters D (km) and thermal inertia {GAMMA} (J/m^2^/s^0.5^/K) normalized to 1 au with a linear relation of the form log[{GAMMA}]={alpha}+{beta}log[D], where we find {alpha}=2.667+/-0.059 and {beta}=-0.467+/-0.044 for our sample alone and {alpha}=2.509+/-0.017 and {beta}=-0.352+/-0.012 when combined with other literature estimates.