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Investigating the most promising Yarkovsky candidates using Gaia DR2 astrometry

Oszkiewicz, Dagmara; Bartczak, Przemysław; Dziadura, Karolina

The Yarkovsky drift is a major factor driving the orbital evolution of asteroids. To date, the effect has been detected for a few hundred asteroids, mainly near-Earth objects. Before the start of the European Space Agency Gaia mission, the expectation was to recognize many other asteroids manifesting the Yarkovsky drift through the high precision …

Astrometric observations and analysis of Triton during 2013-2019

Zhang, H. Y.; Yan, D.; Qiao, R. C. +2 more

Triton is the largest irregular satellite of Neptune. A total of 1135 new observed positions of Triton in the period 2013-2019 were collected by the 1.0 m telescopes at Yunnan Astronomical Observatory of CAS during 13 nights. These positions of Triton were obtained based on Gaia DR2 catalogue. We compared our observations to the theoretical positi…