Collaborative Research: Rubin Rocks: Enabling near-Earth asteroid science with LSST

合作研究：鲁宾岩石：利用 LSST 实现近地小行星科学

• 批准号: 2307569
• 负责人: Sarah Greenstreet
• 金额: $ 40.89万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2307569&HistoricalAwards=false
• 关键词: Collaborative; Research; Rubin; Rocks; Enabling

The Vera Rubin Observatory Legacy Survey of Space and Time is expected to detect more than one hundred thousand near-Earth objects. This data set will present the first opportunity to test current population models of near-Earth asteroids in the region close to the Sun. The investigators will combine data science with solar system dynamics to better characterize the distribution and evolution of orbits, thermal processing and physical properties of asteroids in near-Earth space. The project will also help uncover where potentially hazardous asteroids reside that are currently difficult to track. Corresponding databases and look-up tables accessible through a well-documented web application programming interface will be made available to the science community. The program will introduce a new guided learning project aimed at enhancing early science engagement in students from under-represented backgrounds.Through combining data science with solar system dynamics this project will improve the understanding of the near-Earth object population by taking a closer look at their orbital dynamics and leveraging first results of the Vera Rubin Observatory Legacy Survey of Space and Time. The project will create a residence time probability distribution at higher resolution than has been done before. By combining the extracted information on particle orbital histories, future trajectories, and end-states for given orbital elements, the investigators will produce mean and median residence timescales as well as source region and end-state probabilities for all particles that visit a given orbital element cell. The team will study the dynamical behavior of near-Earth asteroids on orbits interior to that of Earth and Venus and the environment in which they reside. Better understanding the sub-population of impactors approaching the Earth from the sunward direction can aid in their discovery and follow-up, increasing warning times for these often late discoveries. The wealth of information on the near-Earth object orbital distribution and their long-term evolution created in the framework of this project will be publicly accessible and benefit many areas of solar system science.This research award is partially funded by a generous gift from Charles Simonyi to the NSF Astronomy division. The project includes significant contributions to Vera C. Rubin Observatory’s Legacy Survey of Space and Time.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

Vera Rubin天文台的空间和时间遗产调查预计将探测到超过10万个近地天体。这一数据集将首次提供机会检验目前关于太阳附近区域近地小行星群的模型。研究人员将把联合收割机数据科学与太阳系动力学相结合，更好地表征近地空间小行星的轨道分布和演化、热处理和物理特性。该项目还将帮助发现目前难以跟踪的潜在危险小行星所在的位置。将向科学界提供相应的数据库和查询表，这些数据库和查询表可通过一个文件齐全的网络应用程序编程接口访问。该计划将引入一个新的指导学习项目，旨在提高来自代表性不足背景的学生的早期科学参与，通过将数据科学与太阳系动力学相结合，该项目将通过仔细研究近地天体的轨道动力学并利用Vera Rubin天文台空间和时间遗产调查的第一批结果，提高对近地天体群的理解。该项目将创建比以前更高分辨率的停留时间概率分布。通过结合粒子轨道历史，未来轨迹和给定轨道要素的最终状态的提取信息，研究人员将产生平均和中值停留时间尺度以及访问给定轨道要素单元的所有粒子的源区域和最终状态概率。该小组将研究近地小行星在地球和金星轨道内部的动力学行为及其所处的环境。更好地了解从向阳方向接近地球的撞击物亚群，有助于发现和跟踪这些撞击物，增加这些往往很晚才发现的撞击物的预警时间。在该项目框架内建立的关于近地天体轨道分布及其长期演变的丰富信息将向公众开放，并使太阳系科学的许多领域受益。该项目包括对Vera C. Rubin Observatory's Legacy Survey of Space and Time.该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。