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Perseidy 2020 r.

UPCOMING METEOR SHOWERS: AUGUST 2020

Now it's the time for the encounter with one of the most popular meteor showers: the Perseids. Although this shower has proven to be very dynamic in recent years, (especially in the 1990s, due to the perihelion passage of their parent comet, 109P/Swift-Tuttle in 1992, having orbital period of about 130 years) more recently the meteor activity was mostly concentrated around the "normal" peak, with ZHR around 100 hr-1. However, the crossing of some dense streams has led to enhanced activity in several years (like 2016 for example).

Recent IMO observations found that timing of "traditional" broad maximum varied between &#955,sol=139.8 deg to 140.3 degs, equivalent to 2020 August 12, 08h UT to 21h UT. Node is at &#955,sol=140.0-140.1 degs so the peak is expected to occur on August 12 between 13h and 16h UT with ZHR around 110 hr-1.

A filament crossing has been recovered from 2018 data, on August 12 around 20h UT (&#955,sol=139.79 degs). The filament is thought to be an accumulation of meteoroids in a mean-motion resonance.
A similar filament encounter (ZHR=100 hr-1) is predicteded by Peter Jenniskens at &#955,sol=139.89 degs, equivalent to 2020 August 12, 10h UT.

A possible activity by &#946,-Hydrusids (southern emisphere shower) is predicted by Peter Jenniskens on August 16 at 14h18m UT( &#955,sol=143.886 degs ) due to an encounter with a 1-revolution trail of an unknown Jupiter family comet.

Of course, some minor showers will also be active in August, k-Cygnids, daylight &#947,-Leonids and Aurigids being the most significant.
Last but not least, don't forget the great help given by Sporadic Meteors: their rates are very close to annual maximum in August.



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