CHEOPS 太空望远镜对居留空间对象的原位观测
地球与行星天体物理
2024-11-28 v1 天体物理仪器与方法
数据分析、统计与概率
空间物理
摘要
CHARacterising ExOPlanet Satellite (CHEOPS) 是由欧洲空间局 (ESA) 与瑞士合作开发的任务，由 10 个额外的 ESA 成员国提供重要贡献。它是 ESA 科学计划中的首个 S 类任务。CHEOPS 自 2019 年 12 月发射升空至今，处于太阳同步低地球轨道上，持续收集数以百万计的可见光域短曝光图像，以研究行星的特性。尽管 CHEOPS 图像中仍有很小的一部分显示出由居留空间对象穿越仪器视场而引起的线性轨迹，但这一比例正在逐渐增加。为刻画 CHEOPS 观测到的卫星和轨道碎片的统计样本，已对过去 3 年获取的所有科学图像均采用 Hough 变换算法进行扫描，以识别这些对象在图像上引起的特征线性特征。已检测到数千条轨迹。这一统计显著的样本显示出有趣的趋势和特征，例如过去数年出现率的增加以及 Starlink 星座的指纹。正在对 individual 轨迹与已 catalogued 对象进行交叉匹配，以测量观测时这些对象的距离并推断其 apparent 亮度。随着空间机构和私人公司开发新的基于太空的监视和跟踪活动以 catalogue 和 characterize 小型碎片的分布，CHEOPS 的经验正在时有意义。目前，第一轮 CHEOPS 任务延伸计划持续至 2026 年底，可能的第二轮延伸则可延伸至 2029 年底，更长的时间覆盖将使我们的数据集对社区更加宝贵，尤其对于描述具有重复穿越的对象尤为重要。
引用
@article{arxiv.2411.18326,
title = {In-situ observations of resident space objects with the CHEOPS space telescope},
author = {Nicolas Billot and Stephan Hellmich and Willy Benz and Andrea Fortier and David Ehrenreich and Christopher Broeg and Alexis Heitzmann and Anja Bekkelien and Alexis Brandeker and Yann Alibert and Roi Alonso and Tamas Bárczy and David Barrado Navascues and Susana C. C. Barros and Wolfgang Baumjohann and Federico Biondi and Luca Borsato and Andrew Collier Cameron and Carlos Corral van Damme and Alexandre C. M. Correia and Szilard Csizmadia and Patricio E. Cubillos and Melvyn B. Davies and Magali Deleuil and Adrien Deline and Olivier D. S. Demangeon and Brice-Olivier Demory and Aliz Derekas and Billy Edwards and Jo Ann Egger and Anders Erikson and Luca Fossati and Malcolm Fridlund and Davide Gandolfi and Kosmas Gazeas and Michaël Gillon and Manuel Güdel and Maximilian N. Günther and Ch. Helling and Kate G. Isaak and Laszlo L. Kiss and Judith Korth and Kristine W. F. Lam and Jacques Laskar and Alain Lecavelier des Etangs and Monika Lendl and Demetrio Magrin and Pierre F. L. Maxted and Marko Mecina and Bruno Merín and Christoph Mordasini and Valerio Nascimbeni and Göran Olofsson and Roland Ottensamer and Isabella Pagano and Enric Pallé and Gisbert Peter and Daniele Piazza and Giampaolo Piotto and Don Pollacco and Didier Queloz and Roberto Ragazzoni and Nicola Rando and Heike Rauer and Ignasi Ribas and Martin Rieder and Nuno C. Santos and Gaetano Scandariato and Damien Ségransan and Attila E. Simon and Alexis M. S. Smith and Sérgio G. Sousa and Manu Stalport and Sophia Sulis and Gyula M. Szabó and Stéphane Udry and Bernd Ulmer and Solène Ulmer-Moll and Valérie Van Grootel and Julia Venturini and Eva Villaver and Nicholas A. Walton and Thomas G. Wilson},
journal= {arXiv preprint arXiv:2411.18326},
year = {2024}
}
备注
9 pages, 8 figures, Special Issue of the Journal of Space Safety Engineering