Thread: What does ZHR: mean
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Old 22-07-2010, 03:11 PM
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Pinwheel (Doug)
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Join Date: May 2010
Location: Wimmera victoria
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What does ZHR: mean
What does ZHR mean. it cant' be Zero hour because the reference is ZHR:100

Perseid Meteor Shower
Starts Jul 17
Peaks Aug 13
Ends Aug 24
ZHR: 100
Speed: 59 km/s
Radiant: RA: 03:04 Dec: 58°

Thanks,
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