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New astrometric positions for six Jovian irregular satellites using Gaia DR3 in 2016 — 2021

Vienne, A.; Lin, F. R.; Peng, Q. Y. +2 more

The Jovian system is like a miniature solar system, with the system being more than twice as massive as all the other planets combined and having many natural satellites. Its formation and early evolution had a profound influence on our knowledge of the sculpting of the architecture of the solar system. Astrometric observations are of importance, …

NAROO program: Analysis of USNO Galilean observations 1967–1998

Lainey, V.; Robert, V.; Arlot, J. -E. +1 more

The New Astrometric Reduction of Old Observations (NAROO) program is dedicated to the measurement of astrophotographic plates and the analysis of old observations for scientific purposes. One of the main objectives of the NAROO program is to provide accurate positional measurements of planets and satellites to improve our knowledge of their orbits…

Astrometric observations of Phoebe from 2010 to 2019 based on Gaia DR3

Cheng, X.; Zhang, H. Y.; Yan, D. +2 more

A total of 914 positions of Phoebe were collected from 2010 to 2019 with three different telescopes, which were the 1.56 m telescope at the Sheshan station of Shanghai Astronomical Observatory, the 1.0 m telescope at the Kunming station of Yunnan Astronomical Observatory and the 2.4 m telescope at the Lijiang station of Yunnan Astronomical Observa…