Ephemerides

Comparison of the Gaia-CRF3 and planetary ephemerides via asteroid observations
Asteroid-based tie between Gaia-CRF3 and DE440 shows ~10 mas orientation offset; adding Gaia into orbit solutions reduces it to ~0.2 mas.
PDF Cite DOI ADS
Comparison of the Gaia-CRF3 and planetary ephemerides via asteroid observations
Systematics of planetary ephemeris reference frames inferred from pulsar timing astrometry
We determined that current planetary ephemeris reference frames are aligned within 0.4 mas and non-rotating to better than 5 μas/yr.
PDF Cite Code Dataset DOI ADS
Systematics of planetary ephemeris reference frames inferred from pulsar timing astrometry
Effect of Galactic aberration on Earth orientation parameters: From the ICRF2 to the ICRF3
We estimated the effect of Galactic aberration on Earth orientation parameters based on geodetic/astrometric very long baseline …
PDF Cite DOI
Effect of Galactic aberration on Earth orientation parameters: From the ICRF2 to the ICRF3