  We present diameters and albedos computed for the near-Earth and Main Belt
asteroids observed by the Near-Earth Object Wide-field Infrared Survey Explorer
(NEOWISE) spacecraft during the sixth and seventh years of its Reactivation
mission. These diameters and albedos are calculated from fitting thermal models
to NEOWISE observations of $199$ NEOs and $5851$ MBAs detected during the sixth
year of the survey, and $175$ NEOs and $5861$ MBAs from the seventh year.
Comparisons of the near-Earth object diameters derived from Reactivation data
with those derived from the WISE cryogenic mission data show a $\sim30\%$
relative uncertainty. This larger uncertainty compared to data from the
cryogenic mission is due to the need to assume a beaming parameter for the fits
to the shorter wavelength data that the Reactivation mission is limited to. We
also present an analysis of the orbital parameters of the Main Belt asteroids
that have been discovered by NEOWISE during Reactivation, finding that these
objects tend to be on orbits that result in their perihelia being far from the
ecliptic, and thus missed by other surveys. To date, the NEOWISE Reactivation
survey has provided thermal fits of $1415$ unique NEOs. Including the mission
phases before spacecraft hibernation increases the count of unique NEOs
characterized to $1845$ from WISE's launch to the present.
