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Today MS
Today's Meteor Activity

The 'Today's Meteor Activity' graphic shows the averaged daily Meteor Activity provided by the Radio Meteor Observing Bulletin (RMOB). It's updated every hour. This graphic is free for linking to from your own website by using this link


Even if no big meteor showers hit the Earth in September, this month deserves lot of interest by MS enthusiasts. Sporadic meteors flux is at its annual maximum in this period, thus providing relatively good rates especially during morning hours.

Pay attention to September ε-Perseids: they produced an unexpected ouburst of bright meteors on Sept. 9th 2008 (λsol =166.894-166.921 degs, equivalent to 2016 September 9, about 9h UT) and another sharp bright meteor event in 2013 (λsol =167.188 degs, equivalent to 2016 September 9, about 17h UT). Anyway, no outbursts are predicted for 2016, and according to Esko Lyytinen's modelling, next remarkable SPE return may not be before 2040.

Daylight Sextantids should provide fairly good meteor rates around the end of the month. Their maximum is expected on September 27th this year, but please note that the date and timing of Sextantids maximum is actually uncertain. Recent radio data have indicated that the maximum may occur even a day earlier than expected, and it seems plausible that several minor radio maxima detected in early October may also be due to Sextantids.

For Radio Observers, the (Theoretical) UT peaks for upcoming showers in September 2016 are as follows:

Active: August 28 - September 05
Maximum: August 31 (λsol= 158.6 deg)
ZHR: Low (6 hr-1)

September ε-Perseids
Active: September 05 - September 21
Maximum: September 09, 04h UT (λsol= 166.7 degs)
ZHR: Low (5 hr-1)

Sextantids (Daytime Shower)
Active: September 09 - October 09
Maximum: September 27 (λsol= 184.3 degs)
ZHR: Medium

(Source: IMO)

2016 Perseids Overview

2016 Perseids activity has been remarkable, with ZHR higher than average (as expected). Activity profile can be found on IMO website. Detailed profile shows three maxima, having ZHR greater than 150 hr-1. The first two ones are likely due to contribution of streams shifted closer to Earth's orbit by Jupiter, and have been found to be rich in bright meteors (as evidenced by piles of long bursts in the night between Aug 11 and 12). First peak, around 23 UT, Aug 11, reached ZHR=200 hr-1. The third peak is probably the "normal" maximum, near nodal position, with maximum around 08h30m UT on Aug 12.