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Radio Meteor Observations in the World: Monthly Report in May 2017


This page provides a monthly report of worldwide radio meteor observations in May 2017. Worldwide data were provided by Radio Meteor Observing Bulletin (RMOB) and Radio Meteor Observation in Japan (RMOJ). In this month, there were no unusual and major meteor showers. It is impossible to be clear meteor showers that are less than ZHR=20.


η-Aquariids 2017

One one the major meteor showers, η-Aquariids was over in this month. The activity Level was higher than annual year. Figure 1 shows the comparision between annual year covering the period 2004-2017(red line) and this year (circle with error).

2017 η-Aquariids
Figure 1 - comparision between annual year (red line) and 2017 activity (circles with errors)
(30 observing stations in 12 contries)

The peak around Solar Longitude=44°.3 was predicted peak by several researchers. This compornent was estimated as maximum activity level=1.1 at Solar Longitude 44°.32(May 4th 20h30m(UT)) with Full Witdh Half Maximum(FWHM) -3.0hr / +3.0hr.
The annual peak which has a peak around 45°.5 was shown around 45°.4-45°.6. This was estimated as maximum activity level=1.3 at 45°.41(May 5th 23h30m(UT)) with FWHM: -48.0hr / +42.0hr.
The detail result : Result of 2017 η-Aquariids.

Monitoring of Meteor Activity using Japanese radio meteor observations

The following graph showes the monitord result (using ONLY Japanese staions) in May.

Monitoerd result in May (only Japan)

In Japan, There was no unusual activity except for the period of η-Aquariids. Although some high activity levels which were over usual level(0.0±0.4), they were uncertain wheather some meteor activity or observed errors or not.


Acknowledegment:
-- Radio Meteor Observing Bulletin (RMOB)
-- Radio Meteor Observation in Japan (RMOJ)
-- all radio meteor observers