Table 2 The estimated mass and size of impactors which formed the craters with the Copernicus formation simultaneously.
From: Asteroid shower on the Earth-Moon system immediately before the Cryogenian period revealed by KAGUYA
Crater | Location | Diameter of crater (km) | Constant model Age (Ma) | Spike model Age (Ma) | Mass of impactor (kg) | Radius of impactor (km) | Mass of impactor (kg) | Radius of impactor (km) |
|---|---|---|---|---|---|---|---|---|
Moon | For the case of C-type | (1.3 g cm−3) | For the case of S-type | (2.7 g cm−3) | ||||
Saha Ea,b | Far | 29.4 | 632 ± 77 | 763 ± 93 | 1.4E + 13 | 1.4 | 1.2E + 13 | 1.0 |
Godina,b | Near | 35.1 | 649 ± 37 | 783 ± 45 | 2.9E + 13 | 1.7 | 2.3E + 13 | 1.3 |
Lowella,b | Far | 65.6 | 652 ± 47 | 787 ± 57 | 3.2E + 14 | 3.9 | 2.6E + 14 | 2.8 |
Stefan La,b | Far | 26.0 | 656 ± 56 | 792 ± 68 | 9.0E + 12 | 1.2 | 7.3E + 12 | 0.9 |
Dasa,b | Far | 36.6 | 658 ± 64 | 794 ± 77 | 3.4E + 13 | 1.8 | 2.7E + 13 | 1.3 |
Copernicus | Near | 93.1 | 663 ± 22 | 800 ± 27 | 1.2E + 15 | 6.1 | 1.0E + 15 | 4.4 |
Al-Khwarizmi Ka,b | Far | 22.5 | 680 ± 83 | 821 ± 100 | 5.2E + 12 | 1.0 | 4.2E + 12 | 0.7 |
54S161Ea,b | Far | 19.7 | 747 ± 92 | 804 ± 99 | 3.1E + 12 | 0.8 | 2.5E + 12 | 0.6 |
Stevinusb | Near | 70.3 | 766 ± 40 | 805 ± 42 | 4.1E + 14 | 4.2 | 3.4E + 14 | 3.1 |
Klute Wb | Far | 30.2 | 768 ± 80 | 805 ± 84 | 1.6E + 13 | 1.4 | 1.3E + 13 | 1.0 |
Zhukovsky Zb | Far | 33.9 | 889 ± 130 | 812 ± 119 | 2.5E + 13 | 1.7 | 2.0E + 13 | 1.2 |
Golitsynb | Far | 37.2 | 1080 ± 120 | 822 ± 91 | 3.6E + 13 | 1.9 | 2.9E + 13 | 1.4 |
Milne Nb | Far | 32.9 | 1080 ± 150 | 822 ± 114 | 2.2E + 13 | 1.6 | 1.8E + 13 | 1.2 |
Guthnicb | Far | 36.2 | 1100 ± 80 | 823 ± 60 | 3.2E + 13 | 1.8 | 2.6E + 13 | 1.3 |
Steno Qb | Far | 32.0 | 1140 ± 140 | 825 ± 101 | 2.0E + 13 | 1.5 | 1.6E + 13 | 1.1 |
Robinsonb | Near | 24.0 | 1160 ± 190 | 826 ± 135 | 6.6E + 12 | 1.1 | 5.4E + 12 | 0.8 |
Harpalusb | Near | 40.4 | 1230 ± 60 | 830 ± 40 | 4.9E + 13 | 2.1 | 4.0E + 13 | 1.5 |
Total mass of impactors (based on the constant model) | 1.6E + 15 | 6.7 | 1.3E + 15 | 4.9 | ||||
Total mass of impactors (based on the 800 Ma spike model) | 2.3E + 15 | 7.5 | 1.8E + 15 | 5.5 | ||||
