-
1
-
-
0037165990
-
-
J. L. Margot et al., Science 296, 1445 (2002).
-
(2002)
Science
, vol.296
, pp. 1445
-
-
Margot, J.L.1
-
3
-
-
33751573444
-
-
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
-
-
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
-
-
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
-
-
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
-
-
A more detailed description is provided in the supplemental material
-
A more detailed description is provided in the supplemental material.
-
-
-
-
17
-
-
33744808559
-
-
A. Fujiwara et al., Science 312, 1330 (2006).
-
(2006)
Science
, vol.312
, pp. 1330
-
-
Fujiwara, A.1
-
18
-
-
33751573036
-
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
-
-
note
-
-2 and Q = 100.
-
-
-
-
22
-
-
33751575782
-
-
The supporting material provides additional details on this calculation
-
The supporting material provides additional details on this calculation.
-
-
-
-
24
-
-
33751573251
-
-
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
-
-
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
-
-
J. K. Miller et al., Icarus 155, 3 (2002).
-
(2002)
Icarus
, vol.155
, pp. 3
-
-
Miller, J.K.1
-
30
-
-
0141873028
-
-
F. Roig, R. Duffard, P. Penteado, D. Lazzaro, T. Kodama, Icarus 165, 355 (2003).
-
(2003)
Icarus
, vol.165
, pp. 355
-
-
Roig, F.1
Duffard, R.2
Penteado, P.3
Lazzaro, D.4
Kodama, T.5
-
32
-
-
0041639232
-
-
Bottke et al., Eds. Univ. Arizona Press, Tucson
-
W. F. Bottke Jr., D. Vokrouhlický, D. P. Rubincam, M. Broz, Asteroids III, Bottke et al., Eds. (Univ. Arizona Press, Tucson, 2002), p. 405.
-
(2002)
Asteroids III
, pp. 405
-
-
Bottke Jr., W.F.1
Vokrouhlický, D.2
Rubincam, D.P.3
Broz, M.4
-
33
-
-
33344470880
-
-
P. Pravec et al., Icarus 181, 63 (2006).
-
(2006)
Icarus
, vol.181
, pp. 63
-
-
Pravec, P.1
-
34
-
-
33751586079
-
-
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
-
-
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.
-
-
-
|