Astrometric Reduction of Saturnian Satellites with Cassini-ISS Images Degraded by Trailed Stars
Astrometric Reduction of Saturnian Satellites with Cassini-ISS Images Degraded by Trailed Stars
复制标题
使用被尾随恒星退化的卡西尼国际空间站图像对土星卫星进行天体测量还原
DOI：
10.1088/1674-4527/acb97e
复制
发表时间：
2023
影响因子：
1.8
通讯作者：
Guangzhou 510520
中科院分区：
文献类型：
--
作者：
Qin Zhang;Meng;Yan Li;Lin Wu;Zhi;Li;Zhangbu Xu University of Science;J. University;Guangzhou 510632;P. R. China;Sino;Dynamics;S. Science;Department of Financial Technology;School of Management;Guangzhou University;Guangzhou 510520
安装在卡西尼号航天器上的成像科学子系统(ISS)拍摄了大量图像，这为一些行星和卫星的高精度天体测量提供了重要来源。然而，这些图像中的一些被拖曳的恒星退化了。以前，这些退化的图像不能用于天体测量。本文提出了一种自动检测和计算拖尾星中心的新方法。然后将该方法用于国际空间站带有拖尾恒星的图像的天体测量。最后，我们在2004年至2017年期间提供了包括土卫二、狄俄尼、特提斯、米马斯和土卫五在内的几颗卫星的658个天体测量位置。与喷气推进剂星历SAT427相比，这些测量的平均残差在R.A.和12月分别为0.11公里和0.26公里。它们的标准偏差分别为1.08公里和1.37公里。结果表明，该方法能有效地对带有拖尾恒星的卡西尼卫星图像进行天文测量。
The Imaging Science Subsystem (ISS) mounted on the Cassini spacecraft has taken a lot of images, which provides an important source of high-precision astrometry of some planets and satellites. However, some of these images are degraded by trailed stars. Previously, these degraded images cannot be used for astrometry. In this paper, a new method is proposed to detect and compute the centers of these trailed stars automatically. The method is then performed on the astrometry of ISS images with trailed stars. Finally, we provided 658 astrometric positions between 2004 and 2017 of several satellites that include Enceladus, Dione, Tethys, Mimas and Rhea. Compared with the JPL ephemeris SAT427, the mean residuals of these measurements are 0.11 km and 0.26 km in R.A. and decl., respectively. Their standard deviations are 1.08 km and 1.37 km, respectively. The results show that the proposed method performs astrometric measurements of Cassini ISS images with trailed stars effectively.
DOI：
10.1007/978-1-4471-6684-9
发表时间：
2016-03
期刊：
--
影响因子：
--
作者：
W. Burger;M. Burge
通讯作者：
W. Burger;M. Burge