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Table 1

Impact fitting constants for Earth and Mars, and the fraction remaining.

Planet α1, τ1 α2, τ2 α3, τ3 α4, τ4
Earth GT 0.13, 9.3 0.69, 34.2 0.16, 89.5 0.012, 303
Earth ABI 0.068, 8.0 0.46, 36.8 0.46, 109 0.016, 351
Earth DD 0.10, 6.4 0.43, 30.8 0.44, 105 0.021, 306
Mars GT 0.12, 11.9 0.65, 46.4 0.23, 154
Mars ABI 0.20, 32.2 0.75, 116 0.044, 272
Mars DD 0.16, 16.8 0.64, 78.5 0.21, 206
Rem GT 0.17, 8.5 0.56, 35.1 0.23, 88.6 0.016, 1470
Rem ABI 0.13, 10.9 0.41, 42.0 0.45, 116 0.023, 1370
Rem DD 0.20, 17.9 0.43, 65.0 0.27, 143 0.10, 5233

Notes. Uncertainties in the fitting constants are <10%. Time unit is Myr. ‘Rem’ stands for = ‘remain’.

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