The Sun contains about 99.86% of the total mass of the Solar System, leaving all the planets, moons, asteroids and comets to share the remaining fraction.
What that means
Because the Sun holds almost the entire mass, it dominates the gravitational dynamics of the system: planetary orbits, the locations of stable Lagrange points and the motion of small bodies are governed primarily by the Sun’s mass and gravity.
How much is everything else
All the planets combined, with Jupiter accounting for the vast majority of the non‑solar mass, plus moons, asteroid belts, comets and interplanetary dust, together constitute roughly 0.14% of the system’s mass, a proportion that is tiny compared with the Sun’s share.
Implications for solar system formation
The mass distribution reflects star and planet formation processes where most of the original protostellar cloud’s material collapsed into the central star while a much smaller fraction remained in the surrounding protoplanetary disk to form planets and smaller bodies, explaining why the Sun so heavily outweighs its planets.
Takeaway
The Sun’s commanding mass explains why it anchors the Solar System: nearly all gravitational energy, orbital mechanics and long‑term dynamical evolution stem from the Sun’s overwhelming mass rather than from the comparatively tiny combined mass of the planets and minor bodies.