JPL Solar System Dynamics
SSD provides information related to the orbits, physical characteristics,
and discovery circumstances for most known natural bodies in our solar system.
Quick Links
Solar System Objects
| Count | Classification |
|---|---|
| 8 | Planets |
| 421 | Planetary Satellites (includes satellites of Earth and dwarf planet Pluto) |
| 773,916 | numbered |
| 667,875 | unnumbered |
| 1,441,791 | Asteroids (includes KBOs, TNOs, and dwarf planets) |
| 589 | numbered |
| 3,412 | unnumbered |
| 4,001 | Comets (includes fragments) |
Statistics
| orbits computed last month (, ) | |
|---|---|
| orbits computed last 12-months |
Prior Announcements
If you're looking for earlier announcements, all announcements are available on a separate page.
