Space Time
Mars's smaller and outer moon. Likely a captured asteroid.
One record per aspect. The origin says what kind of thing each value is; the source says where it came from; the limit says what it cannot tell you.
Deimos is placed by solving a Keplerian orbit around mars at the simulation time (a = 23,460 km, e = 0.0002, i = 1.8°, period 1.3 d).
Deimos: mean radius 6.2 km. These values are bundled with the object record and drive the rendered size.
Real spacecraft imagery on an approximate ellipsoid. Smooth areas and seams reflect the source mosaic; no lunar terrain is substituted.
The short description and the fact list are written by the Space Time authors for orientation. They are not quoted from a catalog field and carry no citation of their own.
| Dataset | Last refreshed | Horizon | Automated |
|---|---|---|---|
| Planetary satellite mean elements | no snapshot date | Mean elements (a, e, i, period) for every known natural satellite | No, refreshed by hand npm run generate:moons |