Collisional model of asteroids and their debris

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Discussion Overview

The discussion centers around the collisional model of asteroids and their debris, focusing on the dynamics of non-destructive collisions among Main Belt asteroids and their effects on orbital mobility. Participants seek specific articles related to this topic, which includes theoretical and statistical modeling aspects.

Discussion Character

  • Homework-related
  • Exploratory

Main Points Raised

  • One participant requests an article by Dohnanyi on the collisional model of asteroids, indicating urgency.
  • Another participant provides a link to a different article that may be relevant, suggesting it could be of interest.
  • A second participant expresses a similar urgent need for an article on the random walk of Main Belt asteroids, detailing the effects of non-destructive collisions on their orbits and the parameters involved in the model.
  • The second article mentioned discusses the statistical model of dynamical effects due to collisions and highlights uncertainties in parameters such as asteroid size distribution and energy thresholds for fragmentation.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the availability of the requested articles, and there are multiple competing requests for different articles related to the topic.

Contextual Notes

Participants express uncertainty regarding the parameters affecting the collisional dynamics, such as the inventory and size distribution of small Main Belt asteroids and the efficiency of linear momentum transfer.

Who May Find This Useful

Researchers and students interested in asteroid dynamics, collisional models, and the effects of non-destructive collisions on orbital mobility may find this discussion relevant.

Mateja
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Can anyone send me this article? its urgent!

Title:
Collisional model of asteroids and their debris
Authors:
Dohnanyi, J. S.
Publication:
J. Geophys. Res., vol. 74, p. 2431-2554 (1969). (JGR Homepage)
Publication Date:
00/1969
Origin:
AP
Bibliographic Code:
1969JGR...74.2431D

[send me pm if you have it and i will give you e-mail]

thanks!
 
Astronomy news on Phys.org
thanks , that was helpful!
 
Can anyone send me THIS article? its urgent! :D

seriously i REALLY need it ...

The random walk of Main Belt asteroids: orbital mobility by non-destructive collisions
A. Dell'Oro and A. Cellino
National Institut for Astrophysics, Astronomical Observatory of Turin, Strada Osservatorio 20, Pino Torinese 10025, Italy
Monthly Notices of the Royal Astronomical Society

Non-destructive collisions among Main Belt asteroids have effects on their orbits due to the transmission of linear momentum. The efficiency of this mechanism depends on several parameters which are currently poorly known. The most critical aspects are (i) the inventory and size distribution of small Main Belt asteroids, with sizes well below a few kilometres; (ii) the energy threshold for collisional fragmentation and fragment dispersion and (iii) the efficiency of linear momentum transfer. In spite of these difficulties, a general statistical model of the dynamical effects of non-destructive collisions can be developed, and is presented here. Based on this model, the consequences of different assumptions concerning the asteroid size distribution and collision physics are computed and discussed. Quantitative evaluations of the collisionally induced orbital mobility in different possible scenarios are presented.

http://www3.interscience.wiley.com/journal/117975552/abstract?CRETRY=1&SRETRY=0