Toward understanding the origin of asteroid geometries - Variety in shapes produced by equal-mass impacts

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Table 1

Thresholds of b∕a, c∕a, and M_lr ∕M_target of the largestremnants for the categorization of shapes.

Shape	Thresholds
Bilobed	b∕a < 0.7	c∕a < 0.7	M_lr∕M_target = 2.0
Spherical	b∕a > 0.7	c∕a > 0.7	–
Flat	b∕a > 0.7	c∕a < 0.7	M_lr∕M_target > 1.0
Elongated	b∕a < 0.7	c∕a < 0.7	M_lr∕M_target < 2.0
Hemispherical	b∕a > 0.7	c∕a < 0.7	M_lr∕M_target < 1.0
Super-catastrophic	–	–	M_lr∕M_target < 0.4

Notes. All impacts with M_lr∕M_target < 0.4 are classified as super-catastrophic destruction regardless of the values of b∕a and c∕a of the largest remnants.

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