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δ-Aquarids Results(2012)

In 2012, the beginning of main activity was around λo118°. After that, the sub peak aroud λo123° was observed. The main peak was around λo126°.9. Although the activity level was same as annual year, the peak time was later.

Activity Level (using worldwide data)

Aquarids

Observed Peaks

Time(UT) Solar Long. Activity Level
Jul. 25 14h 122°.870 4.17 ± 0.71
Jul. 29 17h 126°.811 5.35 ± 0.06

Estimated Compornents of Quadrantid activity

Comp.No. Peak Time(UT) Solar Long. A(max) FWHM(hr)
DAC12C01 Jul. 25 12h30m 122°.790 2.0 -60.0/+42.0
DAC12C02 Jul. 29 20h30m 126°.931 4.0 -36.0/+78.0

Parameter

  • Radiant : α = 339°, δ = -16°
  • Radian Elevation : 20° < h < 70°
  • 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