Empirical head-to-head comparison table, delta analysis, and interactive formula calculators.
| Category | Planetary Moon |
| Parent Body | Mars |
| Radius km | 6.2 |
| Oblateness | 0.3 |
| Sidereal Rotation h | 30.35 |
| Axial Tilt deg | 0 |
| Surface Gravity m s2 | 0.003 |
| Mean Distance AU | 1.524 |
| Atmospheric Composition | None |
| Category | Galilean Moon |
| Parent Body | Jupiter |
| Radius km | 1821.6 |
| Oblateness | 0.001 |
| Sidereal Rotation h | 42.46 |
| Axial Tilt deg | 0 |
| Surface Gravity m s2 | 1.796 |
| Mean Distance AU | 5.204 |
| Atmospheric Composition | 90% SO2 |
Direct comparative ratio of core numeric metrics between Deimos (Cyan) and Io (Gold).
Deimos and Io represent distinct specifications within Planetary & Lunar Worlds. Reference the side-by-side data table above for exact empirical values.
Yes. GemsMakers offers a high-speed, zero-authentication JSON REST API at https://gemsmakers.com/api/v1/calculate.php and downloadable datasets in both CSV and JSON formats under CC BY 4.0.