Study on Strategy and Efficiency of Dynamic Push Away from Orbit for Near-Earth Asteroids

Abstract

In view of the threat of more frequent near-Earth asteroid impacts，the asteroid dynamic push away deflection disposal mission was demonstrated. The disposal method was pushed away the asteroid multiple times by penetrating and anchoring the asteroid surface and by electric propulsion. In this paper，a dynamic model of near-Earth asteroids was established to study the change of orbit deviation of asteroids with different rotation states under the dynamic push away treatment strategy. Taking the deflection of 2019VL5 asteroid as an example，the efficiency of dynamic push away disposal and the feasibility of the project were evaluated by numerical simulation. The simulation results show that during the warning time of 4 years the maximum deflection distance of the asteroid could be 2.91 × 10⁴ km under the small 0.4 N thrust applied to the specific orbital position，and the maximum deflection distance of the asteroid could be 9.0 × 10⁴ km after 2 500 days of disposal. The dynamic push away disposal of asteroids can effectively deflect threatening asteroids，and can be used in future asteroids deflecting defense missions and orbit transfer missions against other space object attacks.

Keywords

near-Earth asteroids / planetary defense / dynamic push away / deflection disposal

References

[1] PERNA D,BARUCCI M A,FULCHIGNONI M. The near-Earth objects and their potential threat to our planet[J]. The Astronomy and Astrophysics Review,2013,21(65):1-28.
[2] PAEK S W,WECK O DE,HOFFMAN J,et al. Optimization and decision-making framework for multi-staged asteroid deflection campaigns under epistemic uncertainties[J]. Acta Astronautica,2020,167:23-41.
[3] WU W R,GONG Z Z,TANG Y H,et al. Response to risk of near-Earth asteroid impact[J]. Strategic Study of Chinese Academy of Engineering,2022,24(2):140-151.
[4] 马鹏斌,宝音贺西. 近地小行星威胁与防御研究现状[J]. 深空探测学报(中英文),2016,3(1):10-17.MA P B,BAOYIN H X. Research status of the near-Earth asteroids' hazard and mitigation[J]. Journal of Deep Space Exploration,2016,3(1):10-17.
[5] 宋光明,武强,陈川,等. 国外近地小行星在轨处置任务分析与设计软件研究进展[J]. 空间碎片研究,2021,21(2):27-34.SONG G M,WU Q,CHEN C,et al. Advances on mission analysis and design software for active planetary defense against near Earth asteroids[J]. Space Debris Research,2021,21(2):27-34.
[6] 汤文辉,张昆,冉宪文. 基于核爆炸的小行星偏转方案分析[J]. 空间碎片研究,2021,21(4):45-48.TANG W H,ZHANG K,RAN X W. A preliminary analysis on intercepting asteroids by nuclear explosion[J]. Space Debris Research,2021,21(4):45-48.
[7] AHRENS T J,HARRIS A W. Deflection and fragmentation of near-Earth asteroids[J]. Nature,1992,360(6403):429-433.
[8] 张韵,刘岩,李俊峰. 小行星防御动能撞击效果评估[J]. 深空探测学报(中英文),2017,4(1):51-57.ZHANG Y,LIU Y,LI J F. Evaluation of effects of kinetic impact deflection on hazardous asteroids[J]. Journal of Deep Space Exploration,2017,4(1):51-57.
[9] RIVKIN A S,CHENG A F. Planetary defense with the Double Asteroid Redirection Test (DART) mission and prospects[J]. Nature Communications,2023,14(1):1003.
[10] SCHEERES D J. Close Proximity operations for implementing mitigation strategies[C]//Proceedings of 2004 Planetary Defense Conference:Protecting Earth from Asteroids. Orange County,California:AIAA,2004.
[11] 朱敏. 太阳帆航天器动力学与控制研究[D]. 合肥:中国科学技术大学,2016.ZHU M. Dynamics and control of solar sail spacecraft[D]. Hefei:University of Science and Technology of China,2016.
[12] SCHEERES D J,SCHWEICKART R. The Mechanics of moving asteroids[C]//Proceedings of 2004 Planetary Defense Conference:Protecting Earth from Asteroids. Orange County,California:AIAA,2004.
[13] HARRIS A W,BURNS J A. Asteroid rotation:I. tabulation and analysis of rates,pole positions and shapes[J]. Icarus,1979,40(1):115-144.
[14] SCHEERES D J. Orbit mechanics about small asteroids[C]//Proceedings of the 20th International Symposium on Space Flight Dynamics. Annapolis,MD:NASA,2007.
[15] GAYLOR D E. Analysis of low thrust orbit transfers using the Lagrange planetary equations[R]. USA:NASA,2000.
[16] SANCHEZ J P,COLOMBO C,VASILE M,et al. Multicriteria comparison among several mitigation strategies for dangerous near-Earth objects[J]. Journal of Guidance,Control,and Dynamics,2009,32(1):121-142.
[17] IVASHKIN V V,SMIRNOV V V. An analysis of some methods of asteroid hazard mitigation for the Earth[J]. Planetary and Space Science,1995,43(6):821-825.
[18] BURT E G C. The dynamics of low-thrust spacecraft manoeuvres[J]. The Aeronautical Journal,1968,72(695):925-940.