Small-body field atlas / JPL source inventory
A million worlds, individually inspectable.
1,564,244 cataloged bodies. Asteroids, Trojans, Centaurs, and the distant trans-Neptunian population, including provisional designations.
Snapshot: 2026-09-14 · common preview epoch: JD 2461200.5 TDB · JPL source query
Search for a world, open its details, then add it to an experiment. The catalog is an index; only the bodies you choose will enter the live simulation.
Explore the orbital-density map
Orbital-density map
Loading source-accounted density cells…
Top-down J2000 ecliptic projection, logarithmic distance: log₁₀(1 + AU). Density cells account for every mapped object in the chosen orbital class. Search, perihelion, and size filters apply to the results table.
Highlighted paths are C-computed two-body previews. Open trajectories show a ±100-year window around perihelion. Preview motion is approximate; the live experiment integrates gravitational forces.
Experiment basket · 0 / 16 selected
Experiments use the Sun, all eight planets, and up to 16 selected bodies at the common epoch. Starting the experiment is an explicit action on the simulator page.
Find any cataloged body
Catalog index loads in bounded chunks. Full-catalog searches report progress.
| Name / designation | Class | Perihelion | Orbit |
|---|
Read the source boundary
Cataloged, displayed, and actively simulated counts describe different things. The initial density overview accounts for 1,564,244 source orbits; 0 records lack usable orbital data. Result pages contain at most 50 rows.
Missing mass becomes a massless test particle; missing radius stays Unknown with a wire marker. Published SBDB parameters have unclassified measurement/estimate provenance; explicitly sourced dwarf-planet supplements identify their quality. Known dwarf planets and other trans-Neptunian objects remain distinguished in their observation cards.
Source elements are propagated to one epoch using the shared C conic kernel. Their differing original epochs and solution quality remain visible. Planet initial states come from a pinned Sun-centered Horizons snapshot. Fixed-Sun point-mass experiments are educational approximations, especially for close encounters; they are not ephemeris predictions.
Open core demonstration · Read the physical model · Download inventory manifest