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

Drube, Line und Harris, A. W. und Barucci, A. und Fulchignoni, M und Perna, D. (2012) Physical property requirements of a target asteroid for a mitigation demonstration mission. In: Bulletin of the American Astronomical Society, 44 (5), Seite 96. American Astronomical Society. 44th annual meeting of the Division for Planetary Sciences of the American Astronomical Society, 2012-10-14 - 2012-10-19, Reno, Nevada, USA.

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Offizielle 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}

Kurzfassung

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.

elib-URL des Eintrags:https://elib.dlr.de/78245/
Dokumentart:Konferenzbeitrag (Poster)
Titel:Physical property requirements of a target asteroid for a mitigation demonstration mission
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Drube, LineLine.Drube (at) dlr.dehttps://orcid.org/0000-0003-2486-8894NICHT SPEZIFIZIERT
Harris, A. W.alan.harris (at) dlr.dehttps://orcid.org/0000-0001-8548-8268NICHT SPEZIFIZIERT
Barucci, A.LESIA-Observatoire de Paris, FranceNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Fulchignoni, MLESIA-Observatoire de Paris, FranceNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Perna, D.LESIA-Observatoire de Paris, FranceNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:16 Oktober 2012
Erschienen in:Bulletin of the American Astronomical Society
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Band:44
Seitenbereich:Seite 96
Verlag:American Astronomical Society
Name der Reihe:Bulletin of the American Astronomical Society
Status:veröffentlicht
Stichwörter:Asteroids, near-Earth objects, impact hazard, mitigation
Veranstaltungstitel:44th annual meeting of the Division for Planetary Sciences of the American Astronomical Society
Veranstaltungsort:Reno, Nevada, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:14 Oktober 2012
Veranstaltungsende:19 Oktober 2012
Veranstalter :American Astronomical Society
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R - keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):R - keine Zuordnung
Standort: Berlin-Adlershof
Institute & Einrichtungen:Institut für Planetenforschung > Leitungsbereich PF
Hinterlegt von: Harris, Prof. Alan
Hinterlegt am:09 Nov 2012 09:57
Letzte Änderung:24 Apr 2024 19:44

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