Meteor Showers and ZHR Computation

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East Longitude is Positive, West Negative
North Latitude is Positive, South Negative

Meteor Shower Data

Common Showers


All Showers




Meteors/Hour, Observed

Obstructed part of field of view (%)

Visual Magnitude Limit


Population Index of Shower

Radiant's Altitude Above Horizon


ZHR =


Observer's Position

Long ' "
Lat ' "

Date and Time



Date Y M D
UT h m s

Sideral time h m s

Lunar Phase:

Radiant of Meteor Shower

R.A. h m Decl