Start with the complete chart, including its look and data.
Use this project creates one separate chart. Existing charts and AI drafts are kept. Free chart limits apply. Free exports include a watermark.
- Unit
- Cumulative catalogued moons · count
- Period
- 1900–2025 · discovery years
- Source
- JPL Solar System Dynamics · current satellite discovery catalogue, retrieved 18 Oct 2026. Retrospective reconstruction: each currently catalogued moon is counted once at its earliest listed discovery year. Not a history of confirmations or what was officially known at each date. The 1900 baseline includes earlier discoveries: Jupiter 5, Saturn 9, Uranus 4, Neptune 1. In 2025: 115, 293, 29, 16 respectively. Four selected giant planets, 504 observations (126 years × 4). Counts are already cumulative; native cumulative mode stays off. No missing values filled with zero; animation between annual points is visual interpolation. Images: Jupiter and Neptune NASA/JPL; Saturn NASA/JPL/USGS; Uranus NASA/JPL-Caltech. No NASA/JPL endorsement. Discovery references, image credits and reuse policy in source notes.
- License
- JPL satellite discovery catalogue with linked discovery references. NASA/JPL imagery: acknowledge the exact image credits and follow the JPL Image Use Policy; no endorsement implied.