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Measurement requirements for a near-earth asteroid impact mitigation demonstration mission

Wolters, Stephen D.; Ball, Andrew J.; Wells, Nigel; Saunders, Christopher and McBride, Neil (2011). Measurement requirements for a near-earth asteroid impact mitigation demonstration mission. Planetary And Space Science, 59(13) pp. 1506–1515.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1016/j.pss.2011.06.015
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Abstract

A concept for an Impact Mitigation Preparation Mission, called Don Quijote, is to send two spacecrafts to a Near-Earth Asteroid (NEA): an Orbiter and an Impactor. The Impactor collides with the asteroid while the Orbiter measures the resulting change in the asteroid's orbit, by means of a Radio Science Experiment (RSE) carried out before and after the impact. Three parallel Phase A studies on Don Quijote were carried out for the European Space Agency: the research presented here reflects the outcomes of the study by QinetiQ. We discuss the mission objectives with regard to the prioritisation of payload instruments, with emphasis on the interpretation of the impact. The Radio Science Experiment is described and it is examined how solar radiation pressure may increase the uncertainty in measuring the orbit of the target asteroid. It is determined that to measure the change in orbit accurately a thermal IR spectrometer is mandatory, to measure the Yarkovsky effect. The advantages of having a laser altimeter are discussed. The advantages of a dedicated wide-angle impact camera are discussed and the field-of-view is initially sized through a simple model of the impact.

Item Type: Journal Article
Copyright Holders: 2011 Elsevier Ltd
ISSN: 0032-0633
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetEuropean Space Agency, contract no. 4956
Extra Information: This paper derives from a poster presented at Asteroids, Comets, Meteors in 2008:
Science Investigations and Payload for the Don Quijote Mission – Results of the Phase A Study. S.D. Wolters, A.J. Ball and N. McBride. Abstract 8241.
http://www.lpi.usra.edu/meetings/acm2008/pdf/8241.pdf
Keywords: near-earth asteroids; impact mitigation; spacecraft missions
Academic Unit/Department: Science > Physical Sciences
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Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 31805
Depositing User: Andrew Ball
Date Deposited: 30 Jan 2012 17:15
Last Modified: 21 Nov 2012 17:30
URI: http://oro.open.ac.uk/id/eprint/31805
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