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<p>Space Situational Awareness (SSA) is important for understanding the space environment, so as to ensure safe operation for research and commercial efforts, including those planned for the cislunar region. SSA activities include the detection, identification, and tracking of Resident Space Objects (RSOs), manmade and natural, and monitoring of the space environment. SSA objectives rely greatly on the information that can be gained from ground-based sensors, such as optical telescopes. An RSO may be detected by a telescope when it passes in front of a star. There have been studies of how the shadow cast to Earth from a star can be interpreted for important data, referred to as Shadow Imaging. Herein we methods to retrieve information about a space object, from the shadow cast by the object passing in front of the Moon, to achieve Lunar Transit Silhouette Imaging (LTSI).</p>

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Lunar Transit Silhouette Imaging (LTSI)

  • 期刊论文

  • 发表日期：

    2026年5月5日

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  • Bobby R. Hunt,
  • David G. Sheppard,
  • Peter N. McMahon-Crabtree

摘要

Space Situational Awareness (SSA) is important for understanding the space environment, so as to ensure safe operation for research and commercial efforts, including those planned for the cislunar region. SSA activities include the detection, identification, and tracking of Resident Space Objects (RSOs), manmade and natural, and monitoring of the space environment. SSA objectives rely greatly on the information that can be gained from ground-based sensors, such as optical telescopes. An RSO may be detected by a telescope when it passes in front of a star. There have been studies of how the shadow cast to Earth from a star can be interpreted for important data, referred to as Shadow Imaging. Herein we methods to retrieve information about a space object, from the shadow cast by the object passing in front of the Moon, to achieve Lunar Transit Silhouette Imaging (LTSI).