Optical observation forecast / IMO standard formula

METEOR
PREDICTOR

How many meteors you'll actually see — not the theoretical maximum nobody ever reaches.

Pages Predictor Comets

observation site

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Lon —

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Enter your location. Sky darkness is detected automatically from the Falchi 2016 VIIRS satellite atlas — no extra inputs needed.

Nominatim / OSM Falchi 2016 / VIIRS Open-Meteo IMO Working List

ZHR_obs = ZHR × sin(alt) × r^(lm−6.5) × (1−cloud)