Long-term Monitoring of Didymos with the LCOGT Network and MRO after the DART Impact

IF 3.8 Q2 ASTRONOMY & ASTROPHYSICS The Planetary Science Journal Pub Date : 2024-05-30 DOI:10.3847/psj/ad4345
Tim Lister, Cora Constantinescu, William Ryan, Eileen Ryan, Edward Gomez, Liz Phillips, Agata Rożek, Helen Usher, Brian P. Murphy, Joseph Chatelain and Sarah Greenstreet
{"title":"Long-term Monitoring of Didymos with the LCOGT Network and MRO after the DART Impact","authors":"Tim Lister, Cora Constantinescu, William Ryan, Eileen Ryan, Edward Gomez, Liz Phillips, Agata Rożek, Helen Usher, Brian P. Murphy, Joseph Chatelain and Sarah Greenstreet","doi":"10.3847/psj/ad4345","DOIUrl":null,"url":null,"abstract":"The world’s first planetary defense test mission was carried out in late 2022 by NASA’s Double Asteroid Redirection Test (DART) mission. The main DART spacecraft, which was accompanied by the ASI-provided LICIACube cubesat, intentionally impacted Dimorphos, the smaller secondary of the near-Earth object binary system (65803) Didymos, on 2022 September 26. The impact released a large amount of ejecta, which, combined with the spacecraft’s momentum, produced the observed 33 ± 1 minute period change that was subsequently observed from ground-based telescopes. The DART mission, in addition to having successfully changed the orbital period of Dimorphos, also activated the asteroid as a result of the impact but under known conditions, unlike other impacts on asteroids. We have conducted long-term monitoring over 5 months following the impact with the Las Cumbres Observatory Global Telescope (LCOGT) network and Magdalena Ridge Observatory (MRO). This was supplemented by almost 3 months of more sparsely sampled data, primarily from educational users of the LCOGT network during the period from 2022 July 5 to 2022 September 25, prior to the impact date of 2022 September 26. Here we report the observations of the Didymos system and DART impact ejecta with the telescopes of the LCOGT network from T+1.93 days to T+151.3 days after impact, and we study the evolving morphology of the ejecta cloud and evolving tail over the entire length of the data set. In addition, we combined these intensive data sets with the earlier sparse observations over the ∼90 days prior to impact to derive a new disk-integrated phase function model using the H, G1, G2 parameterization.","PeriodicalId":34524,"journal":{"name":"The Planetary Science Journal","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Planetary Science Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3847/psj/ad4345","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0

Abstract

The world’s first planetary defense test mission was carried out in late 2022 by NASA’s Double Asteroid Redirection Test (DART) mission. The main DART spacecraft, which was accompanied by the ASI-provided LICIACube cubesat, intentionally impacted Dimorphos, the smaller secondary of the near-Earth object binary system (65803) Didymos, on 2022 September 26. The impact released a large amount of ejecta, which, combined with the spacecraft’s momentum, produced the observed 33 ± 1 minute period change that was subsequently observed from ground-based telescopes. The DART mission, in addition to having successfully changed the orbital period of Dimorphos, also activated the asteroid as a result of the impact but under known conditions, unlike other impacts on asteroids. We have conducted long-term monitoring over 5 months following the impact with the Las Cumbres Observatory Global Telescope (LCOGT) network and Magdalena Ridge Observatory (MRO). This was supplemented by almost 3 months of more sparsely sampled data, primarily from educational users of the LCOGT network during the period from 2022 July 5 to 2022 September 25, prior to the impact date of 2022 September 26. Here we report the observations of the Didymos system and DART impact ejecta with the telescopes of the LCOGT network from T+1.93 days to T+151.3 days after impact, and we study the evolving morphology of the ejecta cloud and evolving tail over the entire length of the data set. In addition, we combined these intensive data sets with the earlier sparse observations over the ∼90 days prior to impact to derive a new disk-integrated phase function model using the H, G1, G2 parameterization.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
利用 LCOGT 网络和 MRO 在 DART 撞击后对 Didymos 进行长期监测
2022 年底,美国国家航空航天局的双小行星重定向试验(DART)任务执行了世界上首次行星防御试验任务。2022 年 9 月 26 日,DART 主航天器与意大利航天局提供的 LICIACube 立方体卫星一起,有意撞击了近地天体双星系统(65803)Didymos 中较小的副星 Dimorphos。撞击释放出大量的抛射物,再加上航天器的动量,产生了随后从地面望远镜观测到的 33 ± 1 分钟的周期变化。DART 飞行任务除了成功改变了迪莫弗斯的轨道周期外,还在已知条件下激活了这颗小行星,这与其他撞击小行星的情况不同。撞击发生后,我们利用拉斯坎布雷观测站全球望远镜(LCOGT)网络和马格达莱纳岭观测站(MRO)进行了长达 5 个月的长期监测。此外,在 2022 年 9 月 26 日撞击日之前的 2022 年 7 月 5 日至 2022 年 9 月 25 日期间,主要由拉斯坎布雷观测站全球望远镜网络的教育用户提供了近 3 个月的稀少数据。在此,我们报告了利用 LCOGT 网络的望远镜从撞击后 T+1.93 天到 T+151.3 天对 Didymos 系统和 DART 撞击喷出物的观测结果,并研究了整个数据集期间喷出物云和喷出物尾的演变形态。此外,我们还将这些密集数据集与撞击前 90 天的早期稀疏观测数据相结合,利用 H、G1、G2 参数化推导出一个新的磁盘积分相位函数模型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
The Planetary Science Journal
The Planetary Science Journal Earth and Planetary Sciences-Geophysics
CiteScore
5.20
自引率
0.00%
发文量
249
审稿时长
15 weeks
期刊最新文献
Jovian Vortex Hunter: A Citizen Science Project to Study Jupiter’s Vortices Experimental Method for Measuring Cohesion of Regolith via Electrostatic Lofting Mid-infrared Measurements of Ion-irradiated Carbonaceous Meteorites: How to Better Detect Space Weathering Effects Triton’s Captured Youth: Tidal Heating Kept Triton Warm and Active for Billions of Years The Global Distribution of Water and Hydroxyl on the Moon as Seen by the Moon Mineralogy Mapper (M3)
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1