The motion of surface particles for the asteroid 101955 Bennu

被引：27

作者：

Zhang, Yonglong ^{[1
]}

Zeng, Xiangyuan ^{[1
]}

Circi, Christian ^{[2
]}

Vulpetti, Giovanni ^{[3
]}

机构：

[1] Beijing Inst Technol, Sch Automat, Beijing 100081, Peoples R China

[2] Sapienza Univ Rome, Dept Astronaut Elect & Energy Engn, Rome, Italy

[3] Int Acad Astronaut, F-75116 Paris, France

来源：

ACTA ASTRONAUTICA | 2019年 / 163卷

基金：

中国国家自然科学基金;

关键词：

Asteroidal surface dynamics; 101955; Bennu; Free motion; Effective potential; DIPOLE SEGMENT MODEL; POLYHEDRON; STABILITY; ORBIT;

D O I：

10.1016/j.actaastro.2018.11.044

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The asteroid 101955 Bennu is the target asteroid of the ongoing asteroid sample return mission OSIRIS-REx from NASA. In the mission, the spacecraft is scheduled to rendezvous with Bennu in August 2018. Investigating the dynamics of surface motion can offer guidance for further hopping landers or even sample return missions regarding Bennu or similarly irregular-shaped asteroids. This paper presents the free motion of sample particles on and above the surface of Bennu. The concepts and equations that govern the motion of a particle on and above the surface of an asteroid are briefly introduced. Trajectories of a number of particles' free motion are numerically calculated by considering four scenarios with different restitution coefficients. Initial positions of those particles are all randomly given on the surface of Bennu and their initial velocities are set as zero. The distribution of final locations of those sample particles is summarized and analyzed. Both the gravitational potential and its effective potential on the surface of Bennu are calculated to give a possible reason for the distributing characteristics.

引用

页码：3 / 10

页数：8

共 31 条

[1] The landing(s) of Philae and inferences about comet surface mechanical properties [J].

Biele, Jens ;

Ulamec, Stephan ;

Maibaum, Michael ;

Roll, Reinhard ;

Witte, Lars ;

Jurado, Eric ;

Munoz, Pablo ;

Arnold, Walter ;

Auster, Hans-Ulrich ;

Casas, Carlos ;

Faber, Claudia ;

Fantinati, Cinzia ;

Finke, Felix ;

Fischer, Hans-Herbert ;

Geurts, Koen ;

Guettler, Carsten ;

Heinisch, Philip ;

Herique, Alain ;

Hviid, Stubbe ;

Kargl, Guenter ;

Knapmeyer, Martin ;

Knollenberg, Joerg ;

Kofman, Wlodek ;

Koemle, Norbert ;

Kuehrt, Ekkehard ;

Lommatsch, Valentina ;

Mottola, Stefano ;

de Santayana, Ramon Pardo ;

Remetean, Emile ;

Scholten, Frank ;

Seidensticker, Klaus J. ;

Sierks, Holger ;

Spohn, Tilman .

SCIENCE, 2015, 349 (6247)

[2]

Chesley S.R., 2012, ASTEROIDS COMETS MET, V1667

[3] Orbit and bulk density of the OSIRIS-REx target Asteroid (101955) Bennu [J].

Chesley, Steven R. ;

Farnocchia, Davide ;

Nolan, Michael C. ;

Vokrouhlicky, David ;

Chodas, Paul W. ;

Milani, Andrea ;

Spoto, Federica ;

Rozitis, Benjamin ;

Benner, Lance A. M. ;

Bottke, William F. ;

Busch, Michael W. ;

Emery, Joshua P. ;

Howell, Ellen S. ;

Lauretta, Dante S. ;

Margot, Jean-Luc ;

Taylor, Patrick A. .

ICARUS, 2014, 235 :5-22

[4] Dynamics of Equilibrium Points in a Uniformly Rotating Second-Order and Degree Gravitational Field [J].

Feng, Jinglang ;

Hou, Xiyun .

ASTRONOMICAL JOURNAL, 2017, 154 (01)

[5] Stability of surface motion on a rotating ellipsoid [J].

Guibout, V ;

Scheeres, DJ .

CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY, 2003, 87 (03) :263-290

[6] Genealogy and stability of periodic orbit families around uniformly rotating asteroids [J].

Hou, Xiyun ;

Xin, Xiaosheng ;

Feng, Jinglang .

COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION, 2018, 56 :93-114

[7] Surface motion relative to the irregular celestial bodies [J].

Jiang, Yu ;

Zhang, Yun ;

Baoyin, Hexi .

PLANETARY AND SPACE SCIENCE, 2016, 127 :33-43

[8] The OSIRIS-REx target asteroid (101955) Bennu: Constraints on its physical, geological, and dynamical nature from astronomical observations [J].

Lauretta, D. S. ;

Bartels, A. E. ;

Barucci, M. A. ;

Bierhaus, E. B. ;

Binzel, R. P. ;

Bottke, W. F. ;

Campins, H. ;

Chesley, S. R. ;

Clark, B. C. ;

Clark, B. E. ;

Cloutis, E. A. ;

Connolly, H. C. ;

Crombie, M. K. ;

Delbo, M. ;

Dworkin, J. P. ;

Emery, J. P. ;

Glavin, D. P. ;

Hamilton, V. E. ;

Hergenrother, C. W. ;

Johnson, C. L. ;

Keller, L. P. ;

Michel, P. ;

Nolan, M. C. ;

Sandford, S. A. ;

Scheeres, D. J. ;

Simon, A. A. ;

Sutter, B. M. ;

Vokrouhlicky, D. ;

Walsh, K. J. .

METEORITICS & PLANETARY SCIENCE, 2015, 50 (04) :834-849

[9]

Nolan M.C., 2007, Bulletin of the American Astronomical Society, V39, P433

[10] Shape model and surface properties of the OSIRIS-REx target Asteroid (101955) Bennu from radar and lightcurve observations [J].

Nolan, Michael C. ;

Magri, Christopher ;

Howell, Ellen S. ;

Benner, Lance A. M. ;

Giorgini, Jon D. ;

Hergenrother, Carl W. ;

Hudson, R. Scott ;

Lauretta, Dante S. ;

Margot, Jean-Luc ;

Ostro, Steven J. ;

Scheeres, Daniel I. .

ICARUS, 2013, 226 (01) :629-640

← 1 2 3 4 →