  We investigated the suitability of the astronomical 15 GHz VLBA observing
program MOJAVE-5 for estimation of geodetic parameters, such as station
coordinates and Earth orientation parameters. We processed contemporary
geodetic dual-band RV and CN experiments observed at 2.3 GHz and 8.6 GHz
starting on September 2016 through July 2020 as reference dataset. We showed
that the baseline length repeatability from MOJAVE-5 experiments is only a
factor of 1.5 greater than from the dedicated geodetic dataset and still below
1~ppb. The wrms of the difference of estimated EOP with respect to the
reference IERS C04 time series are a factor of 1.3 to 1.8 worse. We isolated
three major differences between the datasets in terms their possible impact on
the geodetic results, i.e. the scheduling approach, treatment of the
ionospheric delay, and selection of target radio sources. We showed that the
major factor causing discrepancies in the estimated geodetic parameters is the
different scheduling approach of the datasets. We conclude that systematic
errors in MOJAVE-5 dataset are low enough for these data to be used as an
excellent testbed for further investigations on the radio source structure
effects in geodesy and astrometry.
