Dealing with uncertainties in asteroid deflection demonstration missions: NEOTωIST

被引：2

作者：

Eggl, Siegfried ^{[1
]}

Hestroffer, Daniel ^{[1
]}

Cano, Juan L. ^{[2
]}

Martin Avila, Javier ^{[2
]}

Drube, Line ^{[3
]}

Harris, Alan W. ^{[3
]}

Falke, Albert ^{[4
]}

Johann, Ulrich ^{[4
]}

Engel, Kilian ^{[4
]}

Schwartz, Stephen R. ^{[5
]}

Michel, Patrick ^{[5
]}

机构：

[1] UPMC Paris 06, Univ Lille 1, IMCCE Observ Paris, 77 Ave Denfert Rochereau, F-75014 Paris, France

[2] DEIMOS Space SLU, Ronda Poniente 19, Tres Cantos 28760, Spain

[3] German Aerosp Ctr DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany

[4] Airbus DS, Claude Dornier Str, D-88090 Immenstaad, Germany

[5] Univ Nice, Observ Cote dAzur, CNRS, Lab Lagrange, Blvd Observ,CS 34229, F-06304 Nice 4, France

来源：

ASTEROIDS: NEW OBSERVATIONS, NEW MODELS | 2016年 / 10卷 / 318期

基金：

欧盟地平线“2020”;

关键词：

minor planets; asteroids; celestial mechanics; space vehicles; methods: statistical; ITOKAWA;

D O I：

10.1017/S1743921315008698

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Deflection missions to near-Earth asteroids will encounter non-negligible uncertainties in the physical and orbital parameters of the target object. In order to reliably assess future impact threat mitigation operations such uncertainties have to be quantified and incorporated into the mission design. The implementation of deflection demonstration missions offers the great opportunity to test our current understanding of deflection relevant uncertainties and their consequences, e.g., regarding kinetic impacts on asteroid surfaces. In this contribution, we discuss the role of uncertainties in the NEOT omega IST asteroid deflection demonstration concept, a low-cost kinetic impactor design elaborated in the framework of the NEOShield project. The aim of NEOT omega IST is to change the spin state of a known and well characterized near-Earth object, in this case the asteroid (25143) Itokawa. Fast events such as the production of the impact crater and ejecta are studied via cube-sat chasers and a flyby vehicle. Long term changes, for instance, in the asteroid's spin and orbit, can be assessed using ground based observations. We find that such a mission can indeed provide valuable constraints on mitigation relevant parameters. Furthermore, the here proposed kinetic impact scenarios can be implemented within the next two decades without threatening Earth's safety.

引用

页码：231 / 238

页数：8