Zenithal Hourly Rate (English, noun)
expansion: Zenithal Hourly Rate (plural Zenithal Hourly Rates)
Senses:
topics: astronomy
natural-sciences
glosses: The number of meteors a single observer would see in one hour under a clear, dark sky (i.e. up to the limiting apparent magnitude of 6.5).
Forms:
form: Zenithal Hourly Rates
tags: plural