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Physical property requirements of a target asteroid for a mitigation demonstration mission

Drube, Line and Harris, A. W. and Barucci, A. and Fulchignoni, M and Perna, D. (2012) Physical property requirements of a target asteroid for a mitigation demonstration mission. In: Bulletin of the American Astronomical Society, 44 (5), p. 96. American Astronomical Society. 44th annual meeting of the Division for Planetary Sciences of the American Astronomical Society, 14-19 Oct. 2012, Reno, Nevada, USA.

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Official URL: http://www.abstractsonline.com/plan/ViewAbstract.aspx?mID=2924&sKey=0283031e-a328-4bea-8bcd-1a613df577b4&cKey=22233d3e-1cc7-4692-827f-39540e83dd0d&mKey={C752C15A-58ED-4FA6-9B4A-725245476867}

Abstract

As part of the NEOShield project we are carrying out a statistical investigation of the properties of the known NEO population, using the latest published data, with the aim of estimating the most likely mitigation-relevant physical properties of the first threatening NEO to trigger a space-borne mitigation campaign. A major aim of NEOShield is to pave the way for a mitigation demonstration mission, including an appropriate and realistic choice of target NEO. Our investigation focuses on the physical properties of the most frequent serious impactors. We define a serious impactor to be one with the potential to lead to major loss of life and damage to infrastructure. At the low end of the size range our definition includes atmospheric events such as the 1908 Tunguska explosion, caused by a body with a diameter of around 50 m. We consider the upper limit of our diameter range of interest to be around 200 m: for objects above this size the impact frequency drops below 1 per 10 000 years. The small sizes of the NEOs in question present technical difficulties for mitigation planning. The complexity and chances of failure of a mitigation mission increase with decreasing diameter below a few hundred meters due to, e.g., the difficulties of targeting and maneuvering around an optically faint, low-gravity object. Further complications arise due to the fact that rotation rates and shapes tend to be more extreme in the case of such small NEOs. Very little is known about the mitigation-relevant properties of small NEOs. An important aspect of our study is to determine to what extent common assumptions about NEO physical properties are justified for mitigation planning, and identify the most critical areas of ignorance. We present and briefly discuss results obtained to date. Funded under EU FP7 program agreement no. 282703.

Item URL in elib:https://elib.dlr.de/78245/
Document Type:Conference or Workshop Item (Poster)
Title:Physical property requirements of a target asteroid for a mitigation demonstration mission
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Drube, LineLine.Drube (at) dlr.dehttps://orcid.org/0000-0003-2486-8894
Harris, A. W.alan.harris (at) dlr.deUNSPECIFIED
Barucci, A.LESIA-Observatoire de Paris, FranceUNSPECIFIED
Fulchignoni, MLESIA-Observatoire de Paris, FranceUNSPECIFIED
Perna, D.LESIA-Observatoire de Paris, FranceUNSPECIFIED
Date:16 October 2012
Journal or Publication Title:Bulletin of the American Astronomical Society
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:44
Page Range:p. 96
Publisher:American Astronomical Society
Series Name:Bulletin of the American Astronomical Society
Status:Published
Keywords:Asteroids, near-Earth objects, impact hazard, mitigation
Event Title:44th annual meeting of the Division for Planetary Sciences of the American Astronomical Society
Event Location:Reno, Nevada, USA
Event Type:international Conference
Event Dates:14-19 Oct. 2012
Organizer:American Astronomical Society
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Deposited By: Harris, Prof. Alan
Deposited On:09 Nov 2012 09:57
Last Modified:26 Apr 2017 12:48

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