Space Time
Irregularly shaped inner moon of Neptune, just below the size at which gravity would make it round.
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.
Proteus is placed by solving a Keplerian orbit around neptune at the simulation time (a = 117,647 km, e = 0.0005, i = 0.1°, period 1.1 d).
Proteus: mean radius 210 km. These values are bundled with the object record and drive the rendered size.
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.
Nothing on this page is a reconstruction or a schematic; every record above is observed, catalogued or computed.
| 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 |