datamonkeys science · interactive experiments

PIAZZI

Open source astrometry of asteroids and comets: finds what moves in your images, measures it against Gaia DR3 and writes the MPC report. Runs right in the browser; 0.11″ median error on a blind test.

Find what moves

On 1 January 1801 Giuseppe Piazzi noticed that a faint star in Taurus had moved by the next night: it was Ceres, the first asteroid. Piazzi is our open source tool that does the same job today: it finds moving objects in your images, measures them against Gaia DR3 and writes reports for the Minor Planet Center.

Below it runs right in your browser on three real ZTF frames of asteroid (5157) Hindemith. Your own images never leave your computer: everything is processed locally.

0.11″median error on a blind test vs JPL Horizons
0false detections in the blind test
16 / 21objects found in data never seen during development
MITopen source license
Open full screen ▸Download (Mac · Linux · Windows)Source on GitHubProduct page

Still in testing: if you observe asteroids or comets, try it on your own frames and tell us what happened.

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