zenithal hourly rate

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zenithal hourly rate [′zē·nə·thəl ′au̇r·lē ′rāt]

(astronomy)

The number of meteors in a meteor shower which would be observed per hour if the radiant of the meteor shower were overhead and there were no moonlight.

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No references found			= Leonid radiant altitude at time of observation EZHR = Sky- and radiant altitude-corrected Leonid Zenithal Hourly Rate Table 3. The Leonid meteor shower in 2002 by Bone, N.M. / Journal of the British Astronomical Association Because different observers see different numbers of meteors depending on local viewing position and sky conditions, astronomers compare counts by using a standard called the zenithal hourly rate (ZHR). Aftermath of a meteor shower by Science News			Zemu Zemun Zen Zen Buddhism Zenaida Pally Zencirli Zend Zend-Avesta Zends Zener breakdown Zener diode Zener diode voltage regulator Zener effect Zener voltage Zener, Clarence Zeng Guofan Zenger, John Peter Zenica Zenit zenith zenith angle zenith distance Zenith Telescope Zenith Telescope, Photographic zenithal chart zenithal hourly rate zenithal rain Zenitsa Zenkevich, Lev Zenkevich, Lev Aleksandrovich Zenkevich, Mikhail Zenkevich, Mikhail Aleksandrovich Zenkov Zenkovich, Vsevolod Zenkovich, Vsevolod Pavlovich Zenkovskii, Vasilii Zenkovskii, Vasilii Vasilevich Zeno Zeno of Citium Zeno of Elea Zeno's paradox Zeno's paradoxes Zeno, Apostolo Zenobe Theophile Gramme Zénobe Théophile Gramme Zenobia Zenobius of Otnia zenocentric coordinates zenodiagnosis zenographic coordinates Zenon Marcel Bacq			Zenith distance Zenith distance Zenith distance Zenith Electronics Corporation Zenith Enterprises, Inc. Zenith Equal Area Zenith Goldline Pharmaceuticals Zenith Hydrostatic Delay Zenith Hygiene Group Zenith MUD Protocol Zenith National Insurance Corp Zenith Neutral Delay Zenith Off Line/On Line Processing System Zenith Optimedia International, Ltd Zenith sector Zenith Software Limited Zenith Stand-Alone TEMPEST AT Microcomputer Zenith Stand-Alone TEMPEST Microcomputer Zenith telescope Zenith telescope Zenith Telescope, Photographic Zenith Total Delay Zenith Truss Structure Zenith Wet Delay zenithal zenithal zenithal zenithal Zenithal Bistable Device zenithal chart zenithal hourly rate zenithal projection zenithal projections zenithal rain Zenithal/Azimuthal Equal Area zeniths zeniths zeniths zeniths Zenitnaya Raketnaya Brigada Zenitnaya Raketnye Kompleks - Strednoye Deiestive Zenitnaya Raketnye Voiska Zenitnaya samokhodnaya ustanovka Zenitnaya Ustanovka Zenitsa Zenix Zenjydar Salama Trust Zenker diverticulum Zenker's Zenker's degeneration Zenker's degeneration Zenker's degeneration Zenker's degeneration Zenker's diverticulum Zenker's necrosis Zenker's necrosis Zenker's necrosis Zenker's necrosis Zenkevich, Lev Zenkevich, Lev Aleksandrovich Zenkevich, Mikhail

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