Table 7 Comparison of Deimos global shape models
From: High-resolution shape models of Phobos and Deimos from stereophotoclinometry
| Â | Ernst et al. (this study) | Thomas 1993 |
|---|---|---|
Image sources | Viking Orbiter, SRC, HiRISE | Viking Orbiter |
Image number | 332 | 12 |
Global model GSDa (m) | 20 | 600 (@ equator; 5º grid) |
Maplet DTM GSDb (m) | 25 | n/a |
Average radiusc (km) | 6.27 ± 0.07 | 6.24 ± 0.25 |
Best-fit ellipsoid (semi-major axis) | 8.04 ± 0.08 ×  5.89 ± 0.06 ×  5.11 ± 0.05 | 7.8 ×  6.0 ×  5.1 |
Volume (km3) | 1033 ± 19 | 1017 ± 130 |
Surface area (km2) | 522 ± 8 | 519 ± 45 |
Bulk densityd (kg/m3) | 1465 ± 51 | 1488 ± 195 |