HOME > Results > Perseids > Results(2020)

Perseids Results(2020)

Perseids 2020 showed annual and unexpected activities using worldwide 39 data in 11 countries. A traditional activity level around λ=140°.0 was same activity level as annual years. On the other hand, however, the increase speed was slower, peak activity showed around λ=140°.0-140°.4. The estimated peak time was 17h(UT) on 12th (λ=140°.2). The estimated ZHR was around 100.
Besides, unexpected high activity was observed around 9h-10h on 13th (λ=140°.8-140°.9). FWHM had -1.5hr and +2.0hr. The estimated ZHR was around 115.
Finally, it had a possibility that some low activity showed around λ=141°-142°). This is beacause the decreasing speed was very slow and activity level was kept for this period.

Activity Level (using worldwide data)

2020Perseids

Observed Peaks

Time(UT) Solar Long. Activity Level
Aug. 12 13h 140°.012 1.25 ± 0.39
Aug. 13 10h 140°.852 1.55 ± 0.43

Estimated Compornents of Perseid activity

Comp.No. Peak Time(UT) Solar Long. A(max) FWHM(hr)
PER20C01 Aug. 12 17h30m 140°.172 1.1 -21.0/+21.0
PER20C02 Aug. 13 10h30m 140°.852 1.0 -1.5/+2.0
PER20C03 Aug. 14 07h30m 141°.692 0.4 -5.0/+3.0

Parameter

  • Radiant : α = 46°.2, δ = +57°.4
  • Radian Elevation : 20° < h
  • Using data within ± 0.50 σ in all observed data.

Reference

  • Structure of meteor activity is estimated by "Lorentz profile".
  • Observed data provided by RMOJ and RMOB