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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


η - Aquariids is the most prominent shower in May; its predicted maximum for 2019 will fall on May 06, 14h UT. This shower, related to the rich stream associated with comet 1P/Halley (as the Orionids in October) , is characterized by a broad maximum, sometimes with a variable number of submaxima. IMO analyses based on data collected between 1984-2001 indicate that ZHRs are generally above 30 in the period May 3-10. The peak rates appear to be variable on a roughly 12-years timescale, due to influence of Jupiter. According to this model, the next ETA maximum is due around 2020-2022, so this year ZHR is going to be better than in previous years. Peak ZHR reached 85 in 2008, 65 in 2009, 70 in 2013 and 75 in 2017. Model calculations indicate that ZHR could reach 50 hr-1 in 2019.

Stream modelling by Mikhail Maslov yelds two trail encounters for 2019: meteors form -539 trail on May 4, between 4-10h UT, and meteors from -985 trail, on May 6, 12-20h UT. Both may add 5-10 to the general rate.

Please note that η - Aquariids radiant is above horizon (thus making the shower usable for MS) in Europe only (approximatively) in very late night and morning hours. While southern Europe stations will be able to see the radiant till early afternoon, in northern Europe skies the radiant culminates at reletively low elevation so an observer is able to see the radiant for much less time.

Some daytime showers (o - Cetids, peaking May 20th being the most significant ) will also be active this month; in addition to increasing Sporadic Meteors background, they will provide good conditions for MS DXing.

For Radio Observers, the (Theoretical) UT peaks for upcoming showers in May 2019 are as follows:

η - Aquariids
Active: April 19 - May 28
Maximum: May 06, 14h UT (λsol= 45.5 degs)
ZHR: HIGH (50 hr-1)

η - Lyrids
Active: May 03 - May 14
Maximum: May 09 (λsol= 48.0 degs)
ZHR: Low (3 hr-1)

e - Arietids (Daytime shower)
Active: April 24 - May 27
Maximum: May 09, 21h UT (λsol= 48.7 degs)
ZHR: Low

Arietids (May) (Daytime shower)
Active: May 04 - June 06
Maximum: May 16, 22h UT (λsol= 55.5 degs)
ZHR: Low

o - Cetids (Daytime shower)
Active: May 05 - June 02
Maximum: May 20, 21h UT (λsol= 59.3 degs)
ZHR: Medium
(Source: IMO)