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The five largest satellites of Uranus: Astrometric observations spread over 29 years at the Pico dos Dias Observatory
Fienga, A.; Assafin, M.; Camargo, J. I. B. +2 more
We present the astrometry of the five largest satellites of Uranus from observations spread over almost three decades with photographic plates and CCDs (mainly), taken at the Pico dos Dias Observatory - Brazil. All positions presented here are obtained from the reanalysis of measurements and images used in previous publications. Reference stars ar…
Complementary astrometry of Cassini Imaging Science Subsystem images of Phoebe
Li, Y.; Cooper, N. J.; Lainey, V. +5 more
Phoebe is the only major satellite of Saturn with a retrograde orbit. The Cassini Imaging Science Subsystem (ISS) took a lot of Phoebe images between 2004 and 2017, but only a selection of them has been reduced. In this paper, we reduced the remaining ISS images of Phoebe. In the reduction, the Gaia EDR3 catalogue was used to provide the reference…
The astrometric results of observations of fast-moving NEAs during close approach to the Earth
Yu, Yong; Tang, Zheng-Hong; Pomazan, Anton +4 more
Current investigation is devoted to ongoing follow-up observations of fast-moving near-Earth asteroids (NEAs) carried out with Rotating-drift-scan CCD technique on small-aperture telescopes in China and Ukraine. The observations were obtained during closest approach (CA) to the Earth in order to get more observational points and extend observation…