Using fireball networks to track more frequent reentries:Falcon 9 upperstage orbit determination from video recordings  

作　　者：Eloy Pena-Asensio Josep M.Trigo-Rodriguez Marco Langbroek Albert Rimola Antonio J.Robles 

机构地区：[1]Departament de Química,Universitat Autònoma de Barcelona(UAB),Bellaterra,Catalonia 08193,Spain [2]Institute of Space Sciences(CSIC),Cerdanyola del Vallès,Barcelona,Catalonia 08193,Spain [3]Institut d’Estudis Espacials de Catalunya(IEEC),Ed.Nexus,Barcelona,Catalonia 08034,Spain [4]Leiden Observatory,Faculty of Science,Leiden University,95002300 RA Leiden,the Netherlands [5]Belgian Working Group Satellites(BWGS),Belgium [6]Spanish Meteor Network(SPMN)Team,Spain

出　　处：《Astrodynamics》2021年第4期347-358,共12页航天动力学（英文）

基　　金：This research was supported by the research project(Grant No.PGC2018-097374-B-I00,PI:JMT-R);which is funded by FEDER/Ministerio de Ciencia e Innovación-Agencia Estatal de Investigación.This project has also received funding from the European Research Council(ERC)under the European Union’s Horizon 2020 Research and Innovation Programme(Grant No.865657)for the project“Quantum Chemistry on Interstellar Grains”(QUANTUMGRAIN);We also express appreciation for the valuable video recordings obtained from Benicàssim(Castellón)by Vicent Ibanez(AVAMET).

摘　　要：On February 16,2021,an artificial object moving slowly over the Mediterranean was recorded by the Spanish Meteor Network(SPMN).Based on astrometric measurements,we identified this event as the reentry engine burn of a SpaceX Falcon 9 launch vehicle’s upper stage.To study this event in detail,we adapted the plane intersection method for near-straight meteoroid trajectories to analyze the slow and curved orbits associated with artificial objects.To corroborate our results,we approximated the orbital elements of the upper stage using four pieces of“debris”cataloged by the U.S.Government’s Combined Space Operations Center.Based on these calculations,we also estimated the possible deorbit hazard zone using the MSISE90 model atmosphere.We provide guidance regarding the interference that these artificial bolides may generate in fireball studies.Additionally,because artificial bolides will likely become more frequent in the future,we point out the new role that ground-based detection networks can play in the monitoring of potentially hazardous artificial objects in near-Earth space and in determining the strewn fields of artificial space debris.

关 键 词：FIREBALL REENTRY DEORBIT artificial meteor multistation 

分 类 号：V52[航空宇航科学与技术—人机与环境工程]