  We analyzed 82,548 carefully curated observations of 4420 asteroids with
Wide-field Infrared Survey Explorer (WISE) four-band data to produce estimates
of diameters and infrared emissivities. We also used these diameter values in
conjunction with absolute visual magnitudes to infer estimates of visible-band
geometric albedos. We provide solutions to 131 asteroids not analyzed by the
NEOWISE team and to 1778 asteroids not analyzed with four-band data by the
NEOWISE team. Our process differs from the NEOWISE analysis in that it uses an
accurate solar flux, integrates the flux with actual bandpass responses, obeys
Kirchhoff's law, and does not force emissivity values in all four bands to an
arbitrary value of 0.9. We used a regularized model fitting algorithm that
yields improved fits to the data. Our results more closely match stellar
occultation diameter estimates than the NEOWISE results by a factor of ~2.
Using 24 high-quality stellar occultation results as a benchmark, we found that
the median error of four-infrared-band diameter estimates in a carefully
curated data set is 9.3%. Our results also suggest the presence of a
size-dependent bias in the NEOWISE diameter estimates, which may pollute
estimates of asteroid size distributions and slightly inflate impact hazard
risk calculations. For more than 90% of asteroids in this sample, the primary
source of error on the albedo estimate is the error on absolute visual
magnitude.
