文章基本信息

标题：Mutual event observations of solar system objects by SRC on Mars Express ★
其他标题：Analysis and release of observations
本地全文：下载
作者：R. Ziese ; K. Willner
期刊名称：Astronomy & Astrophysics
印刷版ISSN：0004-6361
电子版ISSN：1432-0746
出版年度：2018
卷号：614
DOI：10.1051/0004-6361/201731644
语种：English
出版社：EDP Sciences
摘要：Context.Both Martian moons, Phobos and Deimos, have been observed during several imaging campaigns by the Super Resolution Channel (SRC) on the Mars Express probe. Several tens of images are obtained during mutual event observations – when the Martian moons are both observed or together with another solar system body. These observations provide new opportunities to determine the bodies’ positions in their orbits.Aims.A method was sought to automate the observation of the positions of the imaged bodies. Within one image sequence a similarly accurate localization of the objects in all images should be possible.Methods.Shape models of Phobos and Deimos are applied to simulate the appearance of the bodies in the images. Matching the illuminated simulation against the observation provides a reliable determination of the bodies’ location within the image. To enhance the matching confidence several corrections need to be applied to the simulation to closely reconstruct the observation.Results.A list of 884 relative positions between the different objects is provided through the Centre de Données astronomiques de Strasbourg (CDS).
关键词：Key wordsenastrometryephemeridesplanets and satellites: individual: Phobosplanets and satellites: individual: Deimos