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Precise CCD positions of Triton in 2014-2016 using the newest Gaia DR1 star catalogue
N. Wang, Q. Y. Peng, H. W. Peng +3
755 new CCD observations during the years 2014-2016 have been reduced to derive the precise positions of Triton, the first satellite of Neptune. The observations were made by the 1…
Precise CCD positions of Himalia using Gaia DR1 in 2015-2016
H. W. Peng, Q. Y. Peng, N. Wang
In order to obtain high precision CCD positions of Himalia, the sixth Jovian satellite, a total of 598 CCD observations have been obtained during the years 2015-2016. The observati…
Preliminary results of CCD observations of Himalia at Yunnan Observatories in 2015
H. W. Peng, N. Wang, Q. Y. Peng
In order to study the potential in high precision CCD astrometry of irregular satellites, we have made experimental observations for Himalia, the sixth and irregular satellite of J…
Phoebe's orbit from ground-based and space-based observations
Josselin Desmars, Shan-Na Li, Radwan Tajeddine +2
The ephemeris of Phoebe, the ninth satellite of Saturn, is not very accurate. Previous dynamical models were usually too simplified, the astrometry is heterogeneous and, the Saturn…