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The NEOTωIST mission (Near-­‐Earth Object Transfer of angular momentum Spin Test)

Drube, Line and Harris, A.W. and Engel, K. and Falke, A. and Johann, Ulrich and Eggl, S. and Cano, J. L. and Ávila, Javier Martín and Schwartz, S. and Michel, Patrick (2016) The NEOTωIST mission (Near-­‐Earth Object Transfer of angular momentum Spin Test). Acta Astronautica (127), pp. 103-111. Elsevier. doi: 10.1016/j.actaastro.2016.05.009. ISSN 0094-5765.

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Official URL: http://www.sciencedirect.com/science/article/pii/S0094576515300734


We present a concept for a kinetic impactor demonstration mission, which intends to change the spin rate of a previously-­‐visited asteroid, e.g. Itokawa. The mission would determine the efficiency of momentum transfer during an impact, and help mature the technology required for a kinetic impactor mission, both of which are important precursors for a future space mission to deflect an asteroid by collisional means in an emergency situation. Most demonstration mission concepts to date are based on changing an asteroid’s heliocentric orbit and require a reconnaissance spacecraft to measure the very small orbital perturbation due to the impact. Our concept is a low-­‐cost alternative, requiring only one spacecraft. Taking Itokawa as an example an estimate of the order of magnitude of the change in the spin period, δP, with such a mission results in δP ~ 4 minutes (0.5 %), which could be detectable by Earth-­‐based observatories. Our preliminary study found that a mission concept in which an impactor produces a change in an asteroid’s spin rate could provide valuable information for the assessment of the viability of the kinetic-­‐impactor asteroid deflection concept. Furthermore, the data gained from the mission would be of great benefit for our understanding of the collisional evolution of asteroids and the physics behind crater and ejecta-­‐cloud development.

Item URL in elib:https://elib.dlr.de/104600/
Document Type:Article
Additional Information:The research leading to these results has received funding from the European Union’s Seventh Framework Programme (FP7/2007-2013) under Grant agreement no. 282703 (NEOShield) and H2020- PROTEC-2014 - Protection of European Assets in and from space project no. 640351 (NEOShield-2).
Title:The NEOTωIST mission (Near-­‐Earth Object Transfer of angular momentum Spin Test)
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Drube, LineLine.Drube (at) dlr.dehttps://orcid.org/0000-0003-2486-8894
Harris, A.W.alan.harris (at) dlr.deUNSPECIFIED
Engel, K.Airbus D&S, Friedrichshafen, GermanyUNSPECIFIED
Falke, A.Airbus D&S, Friedrichshafen, GermanyUNSPECIFIED
Johann, UlrichAstrium FriedrichshafenUNSPECIFIED
Eggl, S.IMCCE-Observatoire de Paris, 75014 Paris, FranceUNSPECIFIED
Cano, J. L.juan-luis.cano (at) deimos-space.comUNSPECIFIED
Ávila, Javier Martínjavier.martin (at) deimos-space.comUNSPECIFIED
Michel, PatrickObservatoire de la Côte d’Azur, FranceUNSPECIFIED
Journal or Publication Title:Acta Astronautica
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.actaastro.2016.05.009
Page Range:pp. 103-111
Keywords:Near­‐Earth objects, NEOs, Asteroids, Impact hazard, Asteroid deflection, Planetary defense, Kinetic impactor
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Exploration of the Solar System
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Drube, Line
Deposited On:28 Jun 2016 10:58
Last Modified:20 Jun 2021 15:47

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