On the formation of larger bodies in space after dust attraction.

[Novawatcher]

When a (say 50 meters) asteroid 'A' strikes a larger (say 500 meters) ‘equally hard’ asteroid 'B' at a small angle to the asteroid 'B' would have two vectors, one large vector parallel to the asteroid 'B', another second small vector perpendicular to the asteroid 'B'.
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If the small amount of energy of the perpendicular vector is diminished or absorbed by the asteroid (other than asteroid 'A' being absorbed or bouncing off at an opposed angle), all that remains would be the vector parallel to the asteroid 'B' path.
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Thus, since the great majority of debris in the solar system has the same orbital direction, this would result in clusters of particles (asteroids) moving in orbit together.
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Sooner or later the result would be the cluster slowly coalescing. Any original velocities of the two objects ('A' & 'B') would retained but a conjunctive focus for a third order interception point would be created. Ω

 

[Drakkith]

Did you have a question?

 

[Chronos]

An example I can think of is the asteroid belt between Mars and Jupiter. Those bodies will never coallesce to form a planet to due tidal disruption from Jupiter.