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Perseids Results(2005)

In 2005, there was no peak around λo140°.1. On the other hand, double peak arond λo139°.4 and 140°.2 were observed. It was however difficult whether these activities were real or not because these activity between λo139° - 140°.5 had large error bars.

Activity Level (using worldwide data)

Observed Peaks

Time(UT) Solar Long. Activity Level
Aug.12 01h 139°.380 1.68 ± 0.46
Aug.12 23h 140°.253 1.74 ± 0.36

Estimated Compornents of Perseid activity

Comp.No. Peak Time(UT) Solar Long. A(max) FWHM(hr)
PER05C01 Aug.12 03h00m 139°.457 1.5 -4.0/+6.0
PER05C02 Aug.13 02h00m 140°.378 1.5 -6.0/+4.0

Parameter

  • Radiant : α = 46°.2, δ = +57°.4
  • Radian Elevation : 20° < h
  • Using data within ± 0.75 σ in all observed data.

Reference

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