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Volumn 314, Issue 5803, 2006, Pages 1280-1283

Dynamical configuration of binary near-earth asteroid (66391) 1999 KW4

Author keywords

[No Author keywords available]

Indexed keywords

COMPUTER SIMULATION; ORBITS; PERTURBATION TECHNIQUES; SOLAR SYSTEM;

EID: 33751558414     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1133599     Document Type: Article
Times cited : (149)

References (36)
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  • 3
    • 33751573444 scopus 로고    scopus 로고
    • published online 12 October 2006, 10.1126/science.1133622
    • S. J. Ostro et al., Science 314, 1276 (2006); published online 12 October 2006, 10.1126/science.1133622.
    • (2006) Science , vol.314 , pp. 1276
    • Ostro, S.J.1
  • 7
    • 33751561398 scopus 로고    scopus 로고
    • note
    • This polyhedral formulation reduces the mutual potential to a series of joint summations over the facets of each model, 9108 for Alpha and 2292 for Beta. The number of operations for each evaluation of the mutual potential, force, and moment is on the order of the product of those numbers, or 21 million.
  • 9
    • 33751564816 scopus 로고    scopus 로고
    • The complete equations of motion, model, and an animation are available as supporting material on Science Online
    • The complete equations of motion, model, and an animation are available as supporting material on Science Online.
  • 10
    • 33751584058 scopus 로고    scopus 로고
    • note
    • Over time scales of 77,000 years, N-body gravitational perturbations cause KW4's argument of perihelion to circulate and its eccentricity, inclination, and perihelion distance to oscillate significantly, while its semimajor axis remains approximately constant as a result of a Kozai resonance (34). KW4's heliocentric eccentricity and perihelion vary between current values of e = 0.68 and q = 0.20 AU to e = 0.81 and q = 0.12 AU, and its heliocentric inclination varies from 39° (currently) to 14°.
  • 15
    • 33751585128 scopus 로고    scopus 로고
    • A more detailed description is provided in the supplemental material
    • A more detailed description is provided in the supplemental material.
  • 17
    • 33744808559 scopus 로고    scopus 로고
    • A. Fujiwara et al., Science 312, 1330 (2006).
    • (2006) Science , vol.312 , pp. 1330
    • Fujiwara, A.1
  • 18
    • 33751573036 scopus 로고    scopus 로고
    • Stability of Binary Asteroids Formed Through Fission [#1632]
    • abstract presented at the
    • D. J. Scheeres, Stability of Binary Asteroids Formed Through Fission [#1632], abstract presented at the 37th Lunar and Planetary Science Conference (2006).
    • (2006) 37th Lunar and Planetary Science Conference
    • Scheeres, D.J.1
  • 20
    • 33751555576 scopus 로고    scopus 로고
    • note
    • -2 and Q = 100.
  • 22
    • 33751575782 scopus 로고    scopus 로고
    • The supporting material provides additional details on this calculation
    • The supporting material provides additional details on this calculation.
  • 24
    • 33751573251 scopus 로고    scopus 로고
    • note
    • The effect of solar radiation forces on Beta may also influence orbital evolution via the Binary YORP effect (35). Applying the theory in (35) to the KW4 system predicts that the orbit is shrinking at a rate of 0.8 m per year. Such rapid collapse seems inconsistent with the existence of the system unless it formed very recently.
  • 25
    • 33751561725 scopus 로고    scopus 로고
    • note
    • The YORP rotational acceleration is found by applying Rubincam's method (24) to the Alpha model and averaging over one heliocentric orbit period.
  • 27
    • 0036252001 scopus 로고    scopus 로고
    • J. K. Miller et al., Icarus 155, 3 (2002).
    • (2002) Icarus , vol.155 , pp. 3
    • Miller, J.K.1
  • 33
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    • P. Pravec et al., Icarus 181, 63 (2006).
    • (2006) Icarus , vol.181 , pp. 63
    • Pravec, P.1
  • 34
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    • G. F. Gronchi 2006. NEODys Web site. http://newton.dm.unipi.it/cgi-bin/ neodys/neoibo?objects:1999KW4;main.
    • (2006)
    • Gronchi, G.F.1
  • 36
    • 33751579008 scopus 로고    scopus 로고
    • note
    • Research at the University of Michigan was supported by NASA's Planetary Geology and Geophysics Program, by the Jet Propulsion Laboratory (JPL) California Institute of Technology (Caltech) Director's Research and Development Fund, and by the Air Force Office of Scientific Research. Some of this work was performed at JPL Caltech under contract with NASA. The supercomputers used in this investigation were provided by funding from JPL Institutional Computing and Information Services and NASA Directorates of Aeronautics Research, Science, Exploration Systems, and Space Operations. This material is based in part on work supported by NASA under the Science Mission Directorate Research and Analysis Programs. C.M. was partially supported by NSF grant AST-0205975. J.L.M. was supported in part by NASA grant NNG04GN31G. P.P. and P.S. were supported by the Grant Agency of the Czech Republic, Grant 205/05/0604.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.