Open Access
Table 2
Statistical information of the measured geometric parameters for Earth, Mars, and 67P.
| Parameters | Earth | Mars | 67P | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Min | Mean ± 1−σ | Max | Min | Mean ± 1−σ | Max | Min | Mean ± 1−σ | Max | |
| Perimeter (P, m) | 818 | 2653 ± 1535 | 4145 | 273 | 987 ± 702 | 5749 | 52 | 258 ± 146 | 1516 |
| Area (A, m2) | 46575 | 501647 ± 152147 | 989739 | 4337 | 74146 ± 17637 | 910686 | 136 | 4731± 3002 | 83595 |
| Length (L, m) | 210 | 638 ± 333 | 448 | 53 | 223 ± 178 | 1103 | 9 | 55 ± 41 | 383 |
| Width (W, m) | 288 | 882 ± 478 | 1653 | 48 | 335 ± 226 | 2274 | 9 | 81 ± 63 | 515 |
| Depth (D, m) | 0.2 | 1.8 ± 1.4 | 4.0 | 1.0 | 6.9 ± 4 | 25 | 0.39 | 4.8 ± 4.5 | 16 |
| Slope min (Smin, °) | 0 | 0.03 ± 0.05 | 0.23 | 0.01 | 0.40 ± 0.19 | 3.0 | 0 | 5.70 ± 9 | 32.1 |
| Slope mean (Smean, °) | 0.19 | 0.92 ± 0.31 | 1.9 | 3.1 | 5.5 ± 1.9 | 12.9 | 0.1 | 14.4 ± 12.6 | 37.8 |
| Slope max (Smax, °) | 1.6 | 4.1 ± 1.8 | 10 | 5.7 | 20.6 ± 5.7 | 37.2 | 6.3 | 35.9 ± 23.2 | 68.2 |
| Elongation (El, 0) | 0.19 | 0.77 ± 0.36 | 1.28 | 0.12 | 0.74 ± 0.36 | 2.35 | 0.16 | 0.95 ± 0.8 | 5.29 |
| Circularity (C, 0) | 0.61 | 0.83 ± 0.10 | 0.96 | 0.07 | 0.77 ± 0.15 | 0.96 | 0.06 | 0.60 ± 0.19 | 0.91 |
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