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In 1999 and 2001, great meteor storms were observed in the world. There a lot of bright meteors because of the fastest geocentric velocity in all meteor showers. The meteor astronomy had advanced whenever outbursts such as storm came. in recent years, the prediction of meteor shower activity with using dust-trail model had advanced.

In Radio Meteor Observation, there are a lot of long echoes because of the fast geocentric velocity. In 2001 and 2002, it was not able to count the number of meteor echoes since observed data were covered with a lot of long echoes. In the average year, however, it is too weak activity to catch and to determin the peak time of the Leonid activity in Radio Meteor Observation.

Information of Leonids

Name Leonids
Solar Longitude(MAX) 235°.27
Radiant α = 152° / δ = +22°
feature ZHR(max):?, r=2.9, V:71km/s
Parant Comet 55P/Tempel-Tuttle
Reference The International Meteor Organization

Condition of observation in maximum night (2011 - 2015)

Nov. MAX.Time(UT) moon
18th 0h
2011 18th 03h 22
2012 17th 10h 4
2013 17th 16h 15
2014 17th 22h 25
2015 18th 04h 6


Result of Leonids is recorded.(mainly Radio Meteor Observation)
icon Result of Leonids